US20220409302A1 - Sensing arrangements for robot-assisted surgical platforms - Google Patents
Sensing arrangements for robot-assisted surgical platforms Download PDFInfo
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- US20220409302A1 US20220409302A1 US17/871,453 US202217871453A US2022409302A1 US 20220409302 A1 US20220409302 A1 US 20220409302A1 US 202217871453 A US202217871453 A US 202217871453A US 2022409302 A1 US2022409302 A1 US 2022409302A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B34/76—Manipulators having means for providing feel, e.g. force or tactile feedback
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/16—Programme controls
- B25J9/1674—Programme controls characterised by safety, monitoring, diagnostic
- B25J9/1676—Avoiding collision or forbidden zones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
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- G—PHYSICS
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- G16H40/60—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices
Definitions
- Robotic surgical systems can include a central control unit, a surgeon's command console, and a robot having one or more robotic arms.
- Robotic surgical tools can be releasably mounted to the robotic arm(s). The number and type of robotic surgical tools can depend on the type of surgical procedure.
- Robotic surgical systems can be used in connection with one or more displays and/or one or more handheld surgical instruments during a surgical procedure.
- a surgical system comprises a robotic system.
- the robotic system comprises a control unit; a robotic arm comprising an attachment portion; a first sensor system in signal communication with the control unit; and a second sensor system.
- the first sensor system is configured to detect a position of the attachment portion.
- the surgical system further comprises a surgical tool removably attached to the attachment portion.
- the second sensor system is independent of the first sensor system and is configured to detect a position of the surgical tool.
- the surgical system comprises a robotic system.
- the robotic system comprises a control unit; a robotic arm comprising a first portion, a second portion, and a joint intermediate the first and second portions; a first sensor system configured to detect a position of the first and second portions of the robotic arm; and a redundant sensor system.
- the redundant sensor system is configured to detect a position of the first portion and the second portion of the robotic arm.
- the surgical system comprises a surgical robot, comprising: a control unit and a robotic arm.
- the robotic arm comprises a motor.
- the surgical system further comprises a surgical tool removably attached to the robotic arm; a first sensor system in signal communication with the control unit; and a second sensor system.
- the first sensor system comprises a torque sensor on the motor, and is configured to detect a position of the surgical tool.
- the second sensor system is configured to independently detect a position of the surgical tool.
- FIG. 1 is a block diagram of a computer-implemented interactive surgical system, in accordance with at least one aspect of the present disclosure.
- FIG. 2 is a surgical system being used to perform a surgical procedure in an operating room, in accordance with at least one aspect of the present disclosure.
- FIG. 3 is a surgical hub paired with a visualization system, a robotic system, and an intelligent instrument, in accordance with at least one aspect of the present disclosure.
- FIG. 4 is a partial perspective view of a surgical hub enclosure, and of a combo generator module slidably receivable in a drawer of the surgical hub enclosure, in accordance with at least one aspect of the present disclosure.
- FIG. 5 is a perspective view of a combo generator module with bipolar, ultrasonic, and monopolar contacts and a smoke evacuation component, in accordance with at least one aspect of the present disclosure.
- FIG. 6 illustrates individual power bus attachments for a plurality of lateral docking ports of a lateral modular housing configured to receive a plurality of modules, in accordance with at least one aspect of the present disclosure.
- FIG. 7 illustrates a vertical modular housing configured to receive a plurality of modules, in accordance with at least one aspect of the present disclosure.
- FIG. 8 illustrates a surgical data network comprising a modular communication hub configured to connect modular devices located in one or more operating theaters of a healthcare facility, or any room in a healthcare facility specially equipped for surgical operations, to the cloud, in accordance with at least one aspect of the present disclosure.
- FIG. 9 illustrates a computer-implemented interactive surgical system, in accordance with at least one aspect of the present disclosure.
- FIG. 10 illustrates a surgical hub comprising a plurality of modules coupled to the modular control tower, in accordance with at least one aspect of the present disclosure.
- FIG. 11 illustrates one aspect of a Universal Serial Bus (USB) network hub device, in accordance with at least one aspect of the present disclosure.
- USB Universal Serial Bus
- FIG. 12 illustrates a logic diagram of a control system of a surgical instrument or tool, in accordance with at least one aspect of the present disclosure.
- FIG. 13 illustrates a control circuit configured to control aspects of the surgical instrument or tool, in accordance with at least one aspect of the present disclosure.
- FIG. 14 illustrates a combinational logic circuit configured to control aspects of the surgical instrument or tool, in accordance with at least one aspect of the present disclosure.
- FIG. 15 illustrates a sequential logic circuit configured to control aspects of the surgical instrument or tool, in accordance with at least one aspect of the present disclosure.
- FIG. 16 illustrates a surgical instrument or tool comprising a plurality of motors which can be activated to perform various functions, in accordance with at least one aspect of the present disclosure.
- FIG. 17 is a schematic diagram of a robotic surgical instrument configured to operate a surgical tool described herein, in accordance with at least one aspect of the present disclosure.
- FIG. 18 illustrates a block diagram of a surgical instrument programmed to control the distal translation of a displacement member, in accordance with at least one aspect of the present disclosure.
- FIG. 19 is a schematic diagram of a surgical instrument configured to control various functions, in accordance with at least one aspect of the present disclosure.
- FIG. 20 is a simplified block diagram of a generator configured to provide inductorless tuning, among other benefits, in accordance with at least one aspect of the present disclosure.
- FIG. 21 illustrates an example of a generator, which is one form of the generator of FIG. 20 , in accordance with at least one aspect of the present disclosure.
- FIG. 22 is a schematic of a robotic surgical system, in accordance with one aspect of the present disclosure.
- FIG. 23 is a perspective view of a robot arm of a robotic surgical system and schematically depicts additional components of the robotic surgical system, in accordance with one aspect of the present disclosure.
- FIG. 24 is a perspective view of a robotic arm of a robotic surgical system, and further depicts an operator manually adjusting the position of the robotic arm, in accordance with one aspect of the present disclosure.
- FIG. 25 is a graphical display of force over time of the robotic arm of FIG. 24 in a passive power assist mode, in accordance with one aspect of the present disclosure.
- FIG. 26 is a perspective view of a robotic arm and a secondary interactive display within a sterile field, in accordance with at least one aspect of the present disclosure.
- FIG. 27 is a graphical display of force over time of the robotic arm of FIG. 26 , in accordance with one aspect of the present disclosure.
- FIG. 28 is a perspective view of a robotic arm and a robotic hub of a robotic surgical system, in accordance with at least one aspect of the present disclosure.
- FIG. 29 is a detail view of an end effector of a linear stapler attached to the robotic arm of FIG. 28 , depicting the end effector positioned relative to a targeted tissue region during a surgical procedure, in accordance with at least one aspect of the present disclosure.
- FIG. 30 is a graphical display of distance and force-to-close over time for the linear stapler of FIG. 29 , in accordance with one aspect of the present disclosure.
- FIG. 31 is a schematic depicting a robotic surgical system having a plurality of sensing systems, in accordance with one aspect of the present disclosure.
- FIG. 31 A is a detail view of a trocar of FIG. 31 , in accordance with at least one aspect of the present disclosure.
- FIG. 32 is a flowchart depicting a robotic surgical system utilizing a plurality of independent sensing systems, in accordance with one aspect of the present disclosure.
- FIG. 33 is a timeline depicting situational awareness of a surgical hub, in accordance with one aspect of the present disclosure.
- a computer-implemented interactive surgical system 100 includes one or more surgical systems 102 and a cloud-based system (e.g., the cloud 104 that may include a remote server 113 coupled to a storage device 105 ).
- Each surgical system 102 includes at least one surgical hub 106 in communication with the cloud 104 that may include a remote server 113 .
- the surgical system 102 includes a visualization system 108 , a robotic system 110 , and a handheld intelligent surgical instrument 112 , which are configured to communicate with one another and/or the hub 106 .
- a surgical system 102 may include an M number of hubs 106 , an N number of visualization systems 108 , an 0 number of robotic systems 110 , and a P number of handheld intelligent surgical instruments 112 , where M, N, O, and P are integers greater than or equal to one.
- FIG. 3 depicts an example of a surgical system 102 being used to perform a surgical procedure on a patient who is lying down on an operating table 114 in a surgical operating room 116 .
- a robotic system 110 is used in the surgical procedure as a part of the surgical system 102 .
- the robotic system 110 includes a surgeon's console 118 , a patient side cart 120 (surgical robot), and a surgical robotic hub 122 .
- the patient side cart 120 can manipulate at least one removably coupled surgical tool 117 through a minimally invasive incision in the body of the patient while the surgeon views the surgical site through the surgeon's console 118 .
- An image of the surgical site can be obtained by a medical imaging device 124 , which can be manipulated by the patient side cart 120 to orient the imaging device 124 .
- the robotic hub 122 can be used to process the images of the surgical site for subsequent display to the surgeon through the surgeon's console 118 .
- the imaging device 124 includes at least one image sensor and one or more optical components.
- Suitable image sensors include, but are not limited to, Charge-Coupled Device (CCD) sensors and Complementary Metal-Oxide Semiconductor (CMOS) sensors.
- CCD Charge-Coupled Device
- CMOS Complementary Metal-Oxide Semiconductor
- the optical components of the imaging device 124 may include one or more illumination sources and/or one or more lenses.
- the one or more illumination sources may be directed to illuminate portions of the surgical field.
- the one or more image sensors may receive light reflected or refracted from the surgical field, including light reflected or refracted from tissue and/or surgical instruments.
- the one or more illumination sources may be configured to radiate electromagnetic energy in the visible spectrum as well as the invisible spectrum.
- the visible spectrum sometimes referred to as the optical spectrum or luminous spectrum, is that portion of the electromagnetic spectrum that is visible to (i.e., can be detected by) the human eye and may be referred to as visible light or simply light.
- a typical human eye will respond to wavelengths in air that are from about 380 nm to about 750 nm.
- the invisible spectrum is that portion of the electromagnetic spectrum that lies below and above the visible spectrum (i.e., wavelengths below about 380 nm and above about 750 nm).
- the invisible spectrum is not detectable by the human eye.
- Wavelengths greater than about 750 nm are longer than the red visible spectrum, and they become invisible infrared (IR), microwave, and radio electromagnetic radiation.
- Wavelengths less than about 380 nm are shorter than the violet spectrum, and they become invisible ultraviolet, x-ray, and gamma ray electromagnetic radiation.
- the imaging device 124 is configured for use in a minimally invasive procedure.
- imaging devices suitable for use with the present disclosure include, but not limited to, an arthroscope, angioscope, bronchoscope, choledochoscope, colonoscope, cytoscope, duodenoscope, enteroscope, esophagogastro-duodenoscope (gastroscope), endoscope, laryngoscope, nasopharyngo-neproscope, sigmoidoscope, thoracoscope, and ureteroscope.
- the imaging device employs multi-spectrum monitoring to discriminate topography and underlying structures.
- a multi-spectral image is one that captures image data within specific wavelength ranges across the electromagnetic spectrum. The wavelengths may be separated by filters or by the use of instruments that are sensitive to particular wavelengths, including light from frequencies beyond the visible light range, e.g., IR and ultraviolet. Spectral imaging can allow extraction of additional information the human eye fails to capture with its receptors for red, green, and blue.
- Multi-spectrum monitoring can be a useful tool in relocating a surgical field after a surgical task is completed to perform one or more of the previously described tests on the treated tissue.
- the sterile field may be considered a specified area, such as within a tray or on a sterile towel, that is considered free of microorganisms, or the sterile field may be considered an area, immediately around a patient, who has been prepared for a surgical procedure.
- the sterile field may include the scrubbed team members, who are properly attired, and all furniture and fixtures in the area.
- the visualization system 108 includes one or more imaging sensors, one or more image processing units, one or more storage arrays, and one or more displays that are strategically arranged with respect to the sterile field, as illustrated in FIG. 2 .
- the visualization system 108 includes an interface for HL7, PACS, and EMR.
- Various components of the visualization system 108 are described under the heading “Advanced Imaging Acquisition Module” in U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, the disclosure of which is herein incorporated by reference in its entirety.
- a primary display 119 is positioned in the sterile field to be visible to an operator at the operating table 114 .
- a visualization tower 111 is positioned outside the sterile field.
- the visualization tower 111 includes a first non-sterile display 107 and a second non-sterile display 109 , which face away from each other.
- the visualization system 108 guided by the hub 106 , is configured to utilize the displays 107 , 109 , and 119 to coordinate information flow to operators inside and outside the sterile field.
- the hub 106 may cause the visualization system 108 to display a snap-shot of a surgical site, as recorded by an imaging device 124 , on a non-sterile display 107 or 109 , while maintaining a live feed of the surgical site on the primary display 119 .
- the snap-shot on the non-sterile display 107 or 109 can permit a non-sterile operator to perform a diagnostic step relevant to the surgical procedure, for example.
- the hub 106 is also configured to route a diagnostic input or feedback entered by a non-sterile operator at the visualization tower 111 to the primary display 119 within the sterile field, where it can be viewed by a sterile operator at the operating table.
- the input can be in the form of a modification to the snap-shot displayed on the non-sterile display 107 or 109 , which can be routed to the primary display 119 by the hub 106 .
- a surgical instrument 112 is being used in the surgical procedure as part of the surgical system 102 .
- the hub 106 is also configured to coordinate information flow to a display of the surgical instrument 112 .
- a diagnostic input or feedback entered by a non-sterile operator at the visualization tower 111 can be routed by the hub 106 to the surgical instrument display 115 within the sterile field, where it can be viewed by the operator of the surgical instrument 112 .
- Example surgical instruments that are suitable for use with the surgical system 102 are described under the heading “Surgical Instrument Hardware” and in U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, the disclosure of which is herein incorporated by reference in its entirety, for example.
- a hub 106 is depicted in communication with a visualization system 108 , a robotic system 110 , and a handheld intelligent surgical instrument 112 .
- the hub 106 includes a hub display 135 , an imaging module 138 , a generator module 140 , a communication module 130 , a processor module 132 , and a storage array 134 .
- the hub 106 further includes a smoke evacuation module 126 and/or a suction/irrigation module 128 .
- the hub modular enclosure 136 offers a unified environment for managing the power, data, and fluid lines, which reduces the frequency of entanglement between such lines.
- the surgical hub for use in a surgical procedure that involves energy application to tissue at a surgical site.
- the surgical hub includes a hub enclosure and a combo generator module slidably receivable in a docking station of the hub enclosure.
- the docking station includes data and power contacts.
- the combo generator module includes two or more of an ultrasonic energy generator component, a bipolar RF energy generator component, and a monopolar RF energy generator component that are housed in a single unit.
- the combo generator module also includes a smoke evacuation component, at least one energy delivery cable for connecting the combo generator module to a surgical instrument, at least one smoke evacuation component configured to evacuate smoke, fluid, and/or particulates generated by the application of therapeutic energy to the tissue, and a fluid line extending from the remote surgical site to the smoke evacuation component.
- the fluid line is a first fluid line and a second fluid line extends from the remote surgical site to a suction and irrigation module slidably received in the hub enclosure.
- the hub enclosure comprises a fluid interface.
- Certain surgical procedures may require the application of more than one energy type to the tissue.
- One energy type may be more beneficial for cutting the tissue, while another different energy type may be more beneficial for sealing the tissue.
- a bipolar generator can be used to seal the tissue while an ultrasonic generator can be used to cut the sealed tissue.
- the modular surgical enclosure includes a first energy-generator module, configured to generate a first energy for application to the tissue, and a first docking station comprising a first docking port that includes first data and power contacts, wherein the first energy-generator module is slidably movable into an electrical engagement with the power and data contacts and wherein the first energy-generator module is slidably movable out of the electrical engagement with the first power and data contacts.
- the modular surgical enclosure also includes a second energy-generator module configured to generate a second energy, different than the first energy, for application to the tissue, and a second docking station comprising a second docking port that includes second data and power contacts, wherein the second energy-generator module is slidably movable into an electrical engagement with the power and data contacts, and wherein the second energy-generator module is slidably movable out of the electrical engagement with the second power and data contacts.
- a second energy-generator module configured to generate a second energy, different than the first energy, for application to the tissue
- a second docking station comprising a second docking port that includes second data and power contacts
- the modular surgical enclosure also includes a communication bus between the first docking port and the second docking port, configured to facilitate communication between the first energy-generator module and the second energy-generator module.
- a hub modular enclosure 136 that allows the modular integration of a generator module 140 , a smoke evacuation module 126 , and a suction/irrigation module 128 .
- the hub modular enclosure 136 further facilitates interactive communication between the modules 140 , 126 , 128 .
- the generator module 140 can be a generator module with integrated monopolar, bipolar, and ultrasonic components supported in a single housing unit 139 slidably insertable into the hub modular enclosure 136 .
- the generator module 140 can be configured to connect to a monopolar device 146 , a bipolar device 147 , and an ultrasonic device 148 .
- the generator module 140 may comprise a series of monopolar, bipolar, and/or ultrasonic generator modules that interact through the hub modular enclosure 136 .
- the hub modular enclosure 136 can be configured to facilitate the insertion of multiple generators and interactive communication between the generators docked into the hub modular enclosure 136 so that the generators would act as a single generator.
- the hub modular enclosure 136 comprises a modular power and communication backplane 149 with external and wireless communication headers to enable the removable attachment of the modules 140 , 126 , 128 and interactive communication therebetween.
- the hub modular enclosure 136 includes docking stations, or drawers, 151 , herein also referred to as drawers, which are configured to slidably receive the modules 140 , 126 , 128 .
- FIG. 4 illustrates a partial perspective view of a surgical hub enclosure 136 , and a combo generator module 145 slidably receivable in a docking station 151 of the surgical hub enclosure 136 .
- a docking port 152 with power and data contacts on a rear side of the combo generator module 145 is configured to engage a corresponding docking port 150 with power and data contacts of a corresponding docking station 151 of the hub modular enclosure 136 as the combo generator module 145 is slid into position within the corresponding docking station 151 of the hub module enclosure 136 .
- the combo generator module 145 includes a bipolar, ultrasonic, and monopolar module and a smoke evacuation module integrated together into a single housing unit 139 , as illustrated in FIG. 5 .
- the smoke evacuation module 126 includes a fluid line 154 that conveys captured/collected smoke and/or fluid away from a surgical site and to, for example, the smoke evacuation module 126 .
- Vacuum suction originating from the smoke evacuation module 126 can draw the smoke into an opening of a utility conduit at the surgical site.
- the utility conduit, coupled to the fluid line, can be in the form of a flexible tube terminating at the smoke evacuation module 126 .
- the utility conduit and the fluid line define a fluid path extending toward the smoke evacuation module 126 that is received in the hub enclosure 136 .
- the suction/irrigation module 128 is coupled to a surgical tool comprising an aspiration fluid line and a suction fluid line.
- the aspiration and suction fluid lines are in the form of flexible tubes extending from the surgical site toward the suction/irrigation module 128 .
- One or more drive systems can be configured to cause irrigation and aspiration of fluids to and from the surgical site.
- the surgical tool includes a shaft having an end effector at a distal end thereof and at least one energy treatment associated with the end effector, an aspiration tube, and an irrigation tube.
- the aspiration tube can have an inlet port at a distal end thereof and the aspiration tube extends through the shaft.
- an irrigation tube can extend through the shaft and can have an inlet port in proximity to the energy deliver implement.
- the energy deliver implement is configured to deliver ultrasonic and/or RF energy to the surgical site and is coupled to the generator module 140 by a cable extending initially through the shaft.
- the irrigation tube can be in fluid communication with a fluid source, and the aspiration tube can be in fluid communication with a vacuum source.
- the fluid source and/or the vacuum source can be housed in the suction/irrigation module 128 .
- the fluid source and/or the vacuum source can be housed in the hub enclosure 136 separately from the suction/irrigation module 128 .
- a fluid interface can be configured to connect the suction/irrigation module 128 to the fluid source and/or the vacuum source.
- the modules 140 , 126 , 128 and/or their corresponding docking stations on the hub modular enclosure 136 may include alignment features that are configured to align the docking ports of the modules into engagement with their counterparts in the docking stations of the hub modular enclosure 136 .
- the combo generator module 145 includes side brackets 155 that are configured to slidably engage with corresponding brackets 156 of the corresponding docking station 151 of the hub modular enclosure 136 . The brackets cooperate to guide the docking port contacts of the combo generator module 145 into an electrical engagement with the docking port contacts of the hub modular enclosure 136 .
- the drawers 151 of the hub modular enclosure 136 are the same, or substantially the same size, and the modules are adjusted in size to be received in the drawers 151 .
- the side brackets 155 and/or 156 can be larger or smaller depending on the size of the module.
- the drawers 151 are different in size and are each designed to accommodate a particular module.
- the contacts of a particular module can be keyed for engagement with the contacts of a particular drawer to avoid inserting a module into a drawer with mismatching contacts.
- the docking port 150 of one drawer 151 can be coupled to the docking port 150 of another drawer 151 through a communications link 157 to facilitate an interactive communication between the modules housed in the hub modular enclosure 136 .
- the docking ports 150 of the hub modular enclosure 136 may alternatively, or additionally, facilitate a wireless interactive communication between the modules housed in the hub modular enclosure 136 .
- Any suitable wireless communication can be employed, such as for example Air Titan-Bluetooth.
- FIG. 6 illustrates individual power bus attachments for a plurality of lateral docking ports of a lateral modular housing 160 configured to receive a plurality of modules of a surgical hub 206 .
- the lateral modular housing 160 is configured to laterally receive and interconnect the modules 161 .
- the modules 161 are slidably inserted into docking stations 162 of lateral modular housing 160 , which includes a backplane for interconnecting the modules 161 .
- the modules 161 are arranged laterally in the lateral modular housing 160 .
- the modules 161 may be arranged vertically in a lateral modular housing.
- FIG. 7 illustrates a vertical modular housing 164 configured to receive a plurality of modules 165 of the surgical hub 106 .
- the modules 165 are slidably inserted into docking stations, or drawers, 167 of vertical modular housing 164 , which includes a backplane for interconnecting the modules 165 .
- the drawers 167 of the vertical modular housing 164 are arranged vertically, in certain instances, a vertical modular housing 164 may include drawers that are arranged laterally.
- the modules 165 may interact with one another through the docking ports of the vertical modular housing 164 .
- a display 177 is provided for displaying data relevant to the operation of the modules 165 .
- the vertical modular housing 164 includes a master module 178 housing a plurality of sub-modules that are slidably received in the master module 178 .
- the imaging module 138 comprises an integrated video processor and a modular light source and is adapted for use with various imaging devices.
- the imaging device is comprised of a modular housing that can be assembled with a light source module and a camera module.
- the housing can be a disposable housing.
- the disposable housing is removably coupled to a reusable controller, a light source module, and a camera module.
- the light source module and/or the camera module can be selectively chosen depending on the type of surgical procedure.
- the camera module comprises a CCD sensor.
- the camera module comprises a CMOS sensor.
- the camera module is configured for scanned beam imaging.
- the light source module can be configured to deliver a white light or a different light, depending on the surgical procedure.
- the module imaging device of the present disclosure is configured to permit the replacement of a light source module or a camera module midstream during a surgical procedure, without having to remove the imaging device from the surgical field.
- the imaging device comprises a tubular housing that includes a plurality of channels.
- a first channel is configured to slidably receive the camera module, which can be configured for a snap-fit engagement with the first channel.
- a second channel is configured to slidably receive the light source module, which can be configured for a snap-fit engagement with the second channel.
- the camera module and/or the light source module can be rotated into a final position within their respective channels.
- a threaded engagement can be employed in lieu of the snap-fit engagement.
- multiple imaging devices are placed at different positions in the surgical field to provide multiple views.
- the imaging module 138 can be configured to switch between the imaging devices to provide an optimal view.
- the imaging module 138 can be configured to integrate the images from the different imaging device.
- FIG. 8 illustrates a surgical data network 201 comprising a modular communication hub 203 configured to connect modular devices located in one or more operating theaters of a healthcare facility, or any room in a healthcare facility specially equipped for surgical operations, to a cloud-based system (e.g., the cloud 204 that may include a remote server 213 coupled to a storage device 205 ).
- the modular communication hub 203 comprises a network hub 207 and/or a network switch 209 in communication with a network router.
- the modular communication hub 203 also can be coupled to a local computer system 210 to provide local computer processing and data manipulation.
- the surgical data network 201 may be configured as passive, intelligent, or switching.
- a passive surgical data network serves as a conduit for the data, enabling it to go from one device (or segment) to another and to the cloud computing resources.
- An intelligent surgical data network includes additional features to enable the traffic passing through the surgical data network to be monitored and to configure each port in the network hub 207 or network switch 209 .
- An intelligent surgical data network may be referred to as a manageable hub or switch.
- a switching hub reads the destination address of each packet and then forwards the packet to the correct port.
- Modular devices 1 a - 1 n located in the operating theater may be coupled to the modular communication hub 203 .
- the network hub 207 and/or the network switch 209 may be coupled to a network router 211 to connect the devices 1 a - 1 n to the cloud 204 or the local computer system 210 .
- Data associated with the devices 1 a - 1 n may be transferred to cloud-based computers via the router for remote data processing and manipulation.
- Data associated with the devices 1 a - 1 n may also be transferred to the local computer system 210 for local data processing and manipulation.
- Modular devices 2 a - 2 m located in the same operating theater also may be coupled to a network switch 209 .
- the network switch 209 may be coupled to the network hub 207 and/or the network router 211 to connect to the devices 2 a - 2 m to the cloud 204 .
- Data associated with the devices 2 a - 2 n may be transferred to the cloud 204 via the network router 211 for data processing and manipulation.
- Data associated with the devices 2 a - 2 m may also be transferred to the local computer system 210 for local data processing and manipulation.
- the surgical data network 201 may be expanded by interconnecting multiple network hubs 207 and/or multiple network switches 209 with multiple network routers 211 .
- the modular communication hub 203 may be contained in a modular control tower configured to receive multiple devices 1 a - 1 n / 2 a - 2 m .
- the local computer system 210 also may be contained in a modular control tower.
- the modular communication hub 203 is connected to a display 212 to display images obtained by some of the devices 1 a - 1 n / 2 a - 2 m , for example during surgical procedures.
- the devices 1 a - 1 n / 2 a - 2 m may include, for example, various modules such as an imaging module 138 coupled to an endoscope, a generator module 140 coupled to an energy-based surgical device, a smoke evacuation module 126 , a suction/irrigation module 128 , a communication module 130 , a processor module 132 , a storage array 134 , a surgical device coupled to a display, and/or a non-contact sensor module, among other modular devices that may be connected to the modular communication hub 203 of the surgical data network 201 .
- various modules such as an imaging module 138 coupled to an endoscope, a generator module 140 coupled to an energy-based surgical device, a smoke evacuation module 126 , a suction/irrigation module 128 , a communication module 130 , a processor module 132 , a storage array 134 , a surgical device coupled to a display, and/or a non-contact sensor module, among other modular devices that may be connected to the
- the surgical data network 201 may comprise a combination of network hub(s), network switch(es), and network router(s) connecting the devices 1 a - 1 n / 2 a - 2 m to the cloud. Any one of or all of the devices 1 a - 1 n / 2 a - 2 m coupled to the network hub or network switch may collect data in real time and transfer the data to cloud computers for data processing and manipulation. It will be appreciated that cloud computing relies on sharing computing resources rather than having local servers or personal devices to handle software applications.
- the word “cloud” may be used as a metaphor for “the Internet,” although the term is not limited as such.
- cloud computing may be used herein to refer to “a type of Internet-based computing,” where different services—such as servers, storage, and applications—are delivered to the modular communication hub 203 and/or computer system 210 located in the surgical theater (e.g., a fixed, mobile, temporary, or field operating room or space) and to devices connected to the modular communication hub 203 and/or computer system 210 through the Internet.
- the cloud infrastructure may be maintained by a cloud service provider.
- the cloud service provider may be the entity that coordinates the usage and control of the devices 1 a - 1 n / 2 a - 2 m located in one or more operating theaters.
- the cloud computing services can perform a large number of calculations based on the data gathered by smart surgical instruments, robots, and other computerized devices located in the operating theater.
- the hub hardware enables multiple devices or connections to be connected to a computer that communicates with the cloud computing resources and storage.
- the surgical data network provides improved surgical outcomes, reduced costs, and improved patient satisfaction.
- At least some of the devices 1 a - 1 n / 2 a - 2 m may be employed to view tissue states to assess leaks or perfusion of sealed tissue after a tissue sealing and cutting procedure.
- At least some of the devices 1 a - 1 n / 2 a - 2 m may be employed to identify pathology, such as the effects of diseases, using the cloud-based computing to examine data including images of samples of body tissue for diagnostic purposes. This includes localization and margin confirmation of tissue and phenotypes.
- At least some of the devices 1 a - 1 n / 2 a - 2 m may be employed to identify anatomical structures of the body using a variety of sensors integrated with imaging devices and techniques such as overlaying images captured by multiple imaging devices.
- the data gathered by the devices 1 a - 1 n / 2 a - 2 m may be transferred to the cloud 204 or the local computer system 210 or both for data processing and manipulation including image processing and manipulation.
- the data may be analyzed to improve surgical procedure outcomes by determining if further treatment, such as the application of endoscopic intervention, emerging technologies, a targeted radiation, targeted intervention, and precise robotics to tissue-specific sites and conditions, may be pursued.
- Such data analysis may further employ outcome analytics processing, and using standardized approaches may provide beneficial feedback to either confirm surgical treatments and the behavior of the surgeon or suggest modifications to surgical treatments and the behavior of the surgeon.
- the operating theater devices 1 a - 1 n may be connected to the modular communication hub 203 over a wired channel or a wireless channel depending on the configuration of the devices 1 a - 1 n to a network hub.
- the network hub 207 may be implemented, in one aspect, as a local network broadcast device that works on the physical layer of the Open System Interconnection (OSI) model.
- the network hub provides connectivity to the devices 1 a - 1 n located in the same operating theater network.
- the network hub 207 collects data in the form of packets and sends them to the router in half duplex mode.
- the network hub 207 does not store any media access control/internet protocol (MAC/IP) to transfer the device data.
- MAC/IP media access control/internet protocol
- the network hub 207 has no routing tables or intelligence regarding where to send information and broadcasts all network data across each connection and to a remote server 213 ( FIG. 9 ) over the cloud 204 .
- the network hub 207 can detect basic network errors such as collisions, but having all information broadcast to multiple ports can be a security risk and cause bottlenecks.
- the operating theater devices 2 a - 2 m may be connected to a network switch 209 over a wired channel or a wireless channel.
- the network switch 209 works in the data link layer of the OSI model.
- the network switch 209 is a multicast device for connecting the devices 2 a - 2 m located in the same operating theater to the network.
- the network switch 209 sends data in the form of frames to the network router 211 and works in full duplex mode. Multiple devices 2 a - 2 m can send data at the same time through the network switch 209 .
- the network switch 209 stores and uses MAC addresses of the devices 2 a - 2 m to transfer data.
- the network hub 207 and/or the network switch 209 are coupled to the network router 211 for connection to the cloud 204 .
- the network router 211 works in the network layer of the OSI model.
- the network router 211 creates a route for transmitting data packets received from the network hub 207 and/or network switch 209 to cloud-based computer resources for further processing and manipulation of the data collected by any one of or all the devices 1 a - 1 n / 2 a - 2 m .
- the network router 211 may be employed to connect two or more different networks located in different locations, such as, for example, different operating theaters of the same healthcare facility or different networks located in different operating theaters of different healthcare facilities.
- the network router 211 sends data in the form of packets to the cloud 204 and works in full duplex mode. Multiple devices can send data at the same time.
- the network router 211 uses IP addresses to transfer data.
- the network hub 207 may be implemented as a USB hub, which allows multiple USB devices to be connected to a host computer.
- the USB hub may expand a single USB port into several tiers so that there are more ports available to connect devices to the host system computer.
- the network hub 207 may include wired or wireless capabilities to receive information over a wired channel or a wireless channel.
- a wireless USB short-range, high-bandwidth wireless radio communication protocol may be employed for communication between the devices 1 a - 1 n and devices 2 a - 2 m located in the operating theater.
- the operating theater devices 1 a - 1 n / 2 a - 2 m may communicate to the modular communication hub 203 via Bluetooth wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz) from fixed and mobile devices and building personal area networks (PANs).
- PANs personal area networks
- the operating theater devices 1 a - 1 n / 2 a - 2 m may communicate to the modular communication hub 203 via a number of wireless or wired communication standards or protocols, including but not limited to Wi-Fi (IEEE 802.11 family), WiMAX (IEEE 802.16 family), IEEE 802.20, long-term evolution (LTE), and Ev-DO, HSPA+, HSDPA+, HSUPA+, EDGE, GSM, GPRS, CDMA, TDMA, DECT, and Ethernet derivatives thereof, as well as any other wireless and wired protocols that are designated as 3G, 4G, 5G, and beyond.
- the computing module may include a plurality of communication modules.
- a first communication module may be dedicated to shorter-range wireless communications such as Wi-Fi and Bluetooth, and a second communication module may be dedicated to longer-range wireless communications such as GPS, EDGE, GPRS, CDMA, WiMAX, LTE, Ev-DO, and others.
- the modular communication hub 203 may serve as a central connection for one or all of the operating theater devices 1 a - 1 n / 2 a - 2 m and handles a data type known as frames. Frames carry the data generated by the devices 1 a - 1 n / 2 a - 2 m . When a frame is received by the modular communication hub 203 , it is amplified and transmitted to the network router 211 , which transfers the data to the cloud computing resources by using a number of wireless or wired communication standards or protocols, as described herein.
- the modular communication hub 203 can be used as a standalone device or be connected to compatible network hubs and network switches to form a larger network.
- the modular communication hub 203 is generally easy to install, configure, and maintain, making it a good option for networking the operating theater devices 1 a - 1 n / 2 a - 2 m.
- FIG. 9 illustrates a computer-implemented interactive surgical system 200 .
- the computer-implemented interactive surgical system 200 is similar in many respects to the computer-implemented interactive surgical system 100 .
- the computer-implemented interactive surgical system 200 includes one or more surgical systems 202 , which are similar in many respects to the surgical systems 102 .
- Each surgical system 202 includes at least one surgical hub 206 in communication with a cloud 204 that may include a remote server 213 .
- the computer-implemented interactive surgical system 200 comprises a modular control tower 236 connected to multiple operating theater devices such as, for example, intelligent surgical instruments, robots, and other computerized devices located in the operating theater. As shown in FIG.
- the modular control tower 236 comprises a modular communication hub 203 coupled to a computer system 210 .
- the modular control tower 236 is coupled to an imaging module 238 that is coupled to an endoscope 239 , a generator module 240 that is coupled to an energy device 241 , a smoke evacuator module 226 , a suction/irrigation module 228 , a communication module 230 , a processor module 232 , a storage array 234 , a smart device/instrument 235 optionally coupled to a display 237 , and a non-contact sensor module 242 .
- the operating theater devices are coupled to cloud computing resources and data storage via the modular control tower 236 .
- a robot hub 222 also may be connected to the modular control tower 236 and to the cloud computing resources.
- the devices/instruments 235 , visualization systems 208 may be coupled to the modular control tower 236 via wired or wireless communication standards or protocols, as described herein.
- the modular control tower 236 may be coupled to a hub display 215 (e.g., monitor, screen) to display and overlay images received from the imaging module, device/instrument display, and/or other visualization systems 208 .
- the hub display also may display data received from devices connected to the modular control tower in conjunction with images and overlaid images.
- FIG. 10 illustrates a surgical hub 206 comprising a plurality of modules coupled to the modular control tower 236 .
- the modular control tower 236 comprises a modular communication hub 203 , e.g., a network connectivity device, and a computer system 210 to provide local processing, visualization, and imaging, for example.
- the modular communication hub 203 may be connected in a tiered configuration to expand the number of modules (e.g., devices) that may be connected to the modular communication hub 203 and transfer data associated with the modules to the computer system 210 , cloud computing resources, or both.
- each of the network hubs/switches in the modular communication hub 203 includes three downstream ports and one upstream port.
- the upstream network hub/switch is connected to a processor to provide a communication connection to the cloud computing resources and a local display 217 . Communication to the cloud 204 may be made either through a wired or a wireless communication channel.
- the surgical hub 206 employs a non-contact sensor module 242 to measure the dimensions of the operating theater and generate a map of the surgical theater using either ultrasonic or laser-type non-contact measurement devices.
- An ultrasound-based non-contact sensor module scans the operating theater by transmitting a burst of ultrasound and receiving the echo when it bounces off the perimeter walls of an operating theater as described under the heading “Surgical Hub Spatial Awareness Within an Operating Room” in U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, the disclosure of which is herein incorporated by reference in its entirety, in which the sensor module is configured to determine the size of the operating theater and to adjust Bluetooth-pairing distance limits.
- a laser-based non-contact sensor module scans the operating theater by transmitting laser light pulses, receiving laser light pulses that bounce off the perimeter walls of the operating theater, and comparing the phase of the transmitted pulse to the received pulse to determine the size of the operating theater and to adjust Bluetooth pairing distance limits, for example.
- the computer system 210 comprises a processor 244 and a network interface 245 .
- the processor 244 is coupled to a communication module 247 , storage 248 , memory 249 , non-volatile memory 250 , and input/output interface 251 via a system bus.
- the system bus can be any of several types of bus structure(s) including the memory bus or memory controller, a peripheral bus or external bus, and/or a local bus using any variety of available bus architectures including, but not limited to, 9 -bit bus, Industrial Standard Architecture (ISA), Micro-Charmel Architecture (MSA), Extended ISA (EISA), Intelligent Drive Electronics (IDE), VESA Local Bus (VLB), Peripheral Component Interconnect (PCI), USB, Advanced Graphics Port (AGP), Personal Computer Memory Card International Association bus (PCMCIA), Small Computer Systems Interface (SCSI), or any other proprietary bus.
- ISA Industrial Standard Architecture
- MSA Micro-Charmel Architecture
- EISA Extended ISA
- IDE Intelligent Drive Electronics
- VLB VESA Local Bus
- PCI Peripheral Component Interconnect
- USB Universal Serial Bus
- AGP Advanced Graphics Port
- PCMCIA Personal Computer Memory Card International Association bus
- SCSI Small Computer Systems Interface
- the processor 244 may be any single-core or multicore processor such as those known under the trade name ARM Cortex by Texas Instruments.
- the processor may be an LM4F230H5QR ARM Cortex-M4F Processor Core, available from Texas Instruments, for example, comprising an on-chip memory of 256 KB single-cycle flash memory, or other non-volatile memory, up to 40 MHz, a prefetch buffer to improve performance above 40 MHz, a 32 KB single-cycle serial random access memory (SRAM), an internal read-only memory (ROM) loaded with StellarisWare® software, a 2 KB electrically erasable programmable read-only memory (EEPROM), and/or one or more pulse width modulation (PWM) modules, one or more quadrature encoder inputs (QEI) analogs, one or more 12-bit analog-to-digital converters (ADCs) with 12 analog input channels, details of which are available for the product datasheet.
- QEI quadrature encoder inputs
- the processor 244 may comprise a safety controller comprising two controller-based families such as TMS570 and RM4x, known under the trade name Hercules ARM Cortex R4, also by Texas Instruments.
- the safety controller may be configured specifically for IEC 61508 and ISO 26262 safety critical applications, among others, to provide advanced integrated safety features while delivering scalable performance, connectivity, and memory options.
- the system memory includes volatile memory and non-volatile memory.
- the basic input/output system (BIOS) containing the basic routines to transfer information between elements within the computer system, such as during start-up, is stored in non-volatile memory.
- the non-volatile memory can include ROM, programmable ROM (PROM), electrically programmable ROM (EPROM), EEPROM, or flash memory.
- Volatile memory includes random-access memory (RAM), which acts as external cache memory.
- RAM is available in many forms such as SRAM, dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and direct Rambus RAM (DRRAM).
- the computer system 210 also includes removable/non-removable, volatile/non-volatile computer storage media, such as for example disk storage.
- the disk storage includes, but is not limited to, devices like a magnetic disk drive, floppy disk drive, tape drive, Jaz drive, Zip drive, LS-60 drive, flash memory card, or memory stick.
- the disk storage can include storage media separately or in combination with other storage media including, but not limited to, an optical disc drive such as a compact disc ROM device (CD-ROM), compact disc recordable drive (CD-R Drive), compact disc rewritable drive (CD-RW Drive), or a digital versatile disc ROM drive (DVD-ROM).
- CD-ROM compact disc ROM
- CD-R Drive compact disc recordable drive
- CD-RW Drive compact disc rewritable drive
- DVD-ROM digital versatile disc ROM drive
- a removable or non-removable interface may be employed.
- the computer system 210 includes software that acts as an intermediary between users and the basic computer resources described in a suitable operating environment.
- Such software includes an operating system.
- the operating system which can be stored on the disk storage, acts to control and allocate resources of the computer system.
- System applications take advantage of the management of resources by the operating system through program modules and program data stored either in the system memory or on the disk storage. It is to be appreciated that various components described herein can be implemented with various operating systems or combinations of operating systems.
- a user enters commands or information into the computer system 210 through input device(s) coupled to the I/O interface 251 .
- the input devices include, but are not limited to, a pointing device such as a mouse, trackball, stylus, touch pad, keyboard, microphone, joystick, game pad, satellite dish, scanner, TV tuner card, digital camera, digital video camera, web camera, and the like.
- These and other input devices connect to the processor through the system bus via interface port(s).
- the interface port(s) include, for example, a serial port, a parallel port, a game port, and a USB.
- the output device(s) use some of the same types of ports as input device(s).
- a USB port may be used to provide input to the computer system and to output information from the computer system to an output device.
- An output adapter is provided to illustrate that there are some output devices like monitors, displays, speakers, and printers, among other output devices that require special adapters.
- the output adapters include, by way of illustration and not limitation, video and sound cards that provide a means of connection between the output device and the system bus. It should be noted that other devices and/or systems of devices, such as remote computer(s), provide both input and output capabilities.
- the computer system 210 can operate in a networked environment using logical connections to one or more remote computers, such as cloud computer(s), or local computers.
- the remote cloud computer(s) can be a personal computer, server, router, network PC, workstation, microprocessor-based appliance, peer device, or other common network node, and the like, and typically includes many or all of the elements described relative to the computer system. For purposes of brevity, only a memory storage device is illustrated with the remote computer(s).
- the remote computer(s) is logically connected to the computer system through a network interface and then physically connected via a communication connection.
- the network interface encompasses communication networks such as local area networks (LANs) and wide area networks (WANs).
- LAN technologies include Fiber Distributed Data Interface (FDDI), Copper Distributed Data Interface (CDDI), Ethernet/IEEE 802.3, Token Ring/IEEE 802.5 and the like.
- WAN technologies include, but are not limited to, point-to-point links, circuit-switching networks like Integrated Services Digital Networks (ISDN) and variations thereon, packet-switching networks, and Digital Subscriber Lines (DSL).
- ISDN Integrated Services Digital Networks
- DSL Digital Subscriber Lines
- the computer system 210 of FIG. 10 may comprise an image processor, image processing engine, media processor, or any specialized digital signal processor (DSP) used for the processing of digital images.
- the image processor may employ parallel computing with single instruction, multiple data (SIMD) or multiple instruction, multiple data (MIMD) technologies to increase speed and efficiency.
- SIMD single instruction, multiple data
- MIMD multiple instruction, multiple data
- the digital image processing engine can perform a range of tasks.
- the image processor may be a system on a chip with multicore processor architecture.
- the communication connection(s) refers to the hardware/software employed to connect the network interface to the bus. While the communication connection is shown for illustrative clarity inside the computer system, it can also be external to the computer system 210 .
- the hardware/software necessary for connection to the network interface includes, for illustrative purposes only, internal and external technologies such as modems, including regular telephone-grade modems, cable modems, and DSL modems, ISDN adapters, and Ethernet cards.
- FIG. 11 illustrates a functional block diagram of one aspect of a USB network hub 300 device, according to one aspect of the present disclosure.
- the USB network hub device 300 employs a TUSB2036 integrated circuit hub by Texas Instruments.
- the USB network hub 300 is a CMOS device that provides an upstream USB transceiver port 302 and up to three downstream USB transceiver ports 304 , 306 , 308 in compliance with the USB 2.0 specification.
- the upstream USB transceiver port 302 is a differential root data port comprising a differential data minus (DM 0 ) input paired with a differential data plus (DP 0 ) input.
- the three downstream USB transceiver ports 304 , 306 , 308 are differential data ports where each port includes differential data plus (DP 1 -DP 3 ) outputs paired with differential data minus (DM 1 -DM 3 ) outputs.
- the USB network hub 300 device is implemented with a digital state machine instead of a microcontroller, and no firmware programming is required. Fully compliant USB transceivers are integrated into the circuit for the upstream USB transceiver port 302 and all downstream USB transceiver ports 304 , 306 , 308 .
- the downstream USB transceiver ports 304 , 306 , 308 support both full-speed and low-speed devices by automatically setting the slew rate according to the speed of the device attached to the ports.
- the USB network hub 300 device may be configured either in bus-powered or self-powered mode and includes a hub power logic 312 to manage power.
- the USB network hub 300 device includes a serial interface engine 310 (SIE).
- SIE 310 is the front end of the USB network hub 300 hardware and handles most of the protocol described in chapter 8 of the USB specification.
- the SIE 310 typically comprehends signaling up to the transaction level.
- the functions that it handles could include: packet recognition, transaction sequencing, SOP, EOP, RESET, and RESUME signal detection/generation, clock/data separation, non-return-to-zero invert (NRZI) data encoding/decoding and bit-stuffing, CRC generation and checking (token and data), packet ID (PID) generation and checking/decoding, and/or serial-parallel/parallel-serial conversion.
- NRZI non-return-to-zero invert
- the 310 receives a clock input 314 and is coupled to a suspend/resume logic and frame timer 316 circuit and a hub repeater circuit 318 to control communication between the upstream USB transceiver port 302 and the downstream USB transceiver ports 304 , 306 , 308 through port logic circuits 320 , 322 , 324 .
- the SIE 310 is coupled to a command decoder 326 via SIE interface logic 328 to control commands from a serial EEPROM via a serial EEPROM interface 330 .
- the USB network hub 300 can connect 127 functions configured in up to six logical layers (tiers) to a single computer. Further, the USB network hub 300 can connect to all peripherals using a standardized four-wire cable that provides both communication and power distribution.
- the power configurations are bus-powered and self-powered modes.
- the USB network hub 300 may be configured to support four modes of power management: a bus-powered hub, with either individual-port power management or ganged-port power management, and the self-powered hub, with either individual-port power management or ganged-port power management.
- the USB network hub 300 using a USB cable, the USB network hub 300 , the upstream USB transceiver port 302 is plugged into a USB host controller, and the downstream USB transceiver ports 304 , 306 , 308 are exposed for connecting USB compatible devices, and so forth.
- FIG. 12 illustrates a logic diagram of a control system 470 of a surgical instrument or tool in accordance with one or more aspects of the present disclosure.
- the system 470 comprises a control circuit.
- the control circuit includes a microcontroller 461 comprising a processor 462 and a memory 468 .
- One or more of sensors 472 , 474 , 476 for example, provide real-time feedback to the processor 462 .
- a motor 482 driven by a motor driver 492 , operably couples a longitudinally movable displacement member to drive the I-beam knife element.
- a tracking system 480 is configured to determine the position of the longitudinally movable displacement member.
- the position information is provided to the processor 462 , which can be programmed or configured to determine the position of the longitudinally movable drive member as well as the position of a firing member, firing bar, and I-beam knife element. Additional motors may be provided at the tool driver interface to control I-beam firing, closure tube travel, shaft rotation, and articulation.
- a display 473 displays a variety of operating conditions of the instruments and may include touch screen functionality for data input. Information displayed on the display 473 may be overlaid with images acquired via endoscopic imaging modules.
- the microcontroller 461 may be any single-core or multicore processor such as those known under the trade name ARM Cortex by Texas Instruments.
- the main microcontroller 461 may be an LM4F230H5QR ARM Cortex-M4F Processor Core, available from Texas Instruments, for example, comprising an on-chip memory of 256 KB single-cycle flash memory, or other non-volatile memory, up to 40 MHz, a prefetch buffer to improve performance above 40 MHz, a 32 KB single-cycle SRAM, and internal ROM loaded with StellarisWare® software, a 2 KB EEPROM, one or more PWM modules, one or more QEI analogs, and/or one or more 12-bit ADCs with 12 analog input channels, details of which are available for the product datasheet.
- the microcontroller 461 may comprise a safety controller comprising two controller-based families such as TMS570 and RM4x, known under the trade name Hercules ARM Cortex R4, also by Texas Instruments.
- the safety controller may be configured specifically for IEC 61508 and ISO 26262 safety critical applications, among others, to provide advanced integrated safety features while delivering scalable performance, connectivity, and memory options.
- the microcontroller 461 may be programmed to perform various functions such as precise control over the speed and position of the knife and articulation systems.
- the microcontroller 461 includes a processor 462 and a memory 468 .
- the electric motor 482 may be a brushed direct current (DC) motor with a gearbox and mechanical links to an articulation or knife system.
- a motor driver 492 may be an A 3941 available from Allegro Microsystems, Inc.
- Other motor drivers may be readily substituted for use in the tracking system 480 comprising an absolute positioning system. A detailed description of an absolute positioning system is described in U.S. Patent Application Publication No. 2017/0296213, titled SYSTEMS AND METHODS FOR CONTROLLING A SURGICAL STAPLING AND CUTTING INSTRUMENT, which published on Oct. 19, 2017, which is herein incorporated by reference in its entirety.
- the microcontroller 461 may be programmed to provide precise control over the speed and position of displacement members and articulation systems.
- the microcontroller 461 may be configured to compute a response in the software of the microcontroller 461 .
- the computed response is compared to a measured response of the actual system to obtain an “observed” response, which is used for actual feedback decisions.
- the observed response is a favorable, tuned value that balances the smooth, continuous nature of the simulated response with the measured response, which can detect outside influences on the system.
- the motor 482 may be controlled by the motor driver 492 and can be employed by the firing system of the surgical instrument or tool.
- the motor 482 may be a brushed DC driving motor having a maximum rotational speed of approximately 25,000 RPM.
- the motor 482 may include a brushless motor, a cordless motor, a synchronous motor, a stepper motor, or any other suitable electric motor.
- the motor driver 492 may comprise an H-bridge driver comprising field-effect transistors (FETs), for example.
- FETs field-effect transistors
- the motor 482 can be powered by a power assembly releasably mounted to the handle assembly or tool housing for supplying control power to the surgical instrument or tool.
- the power assembly may comprise a battery which may include a number of battery cells connected in series that can be used as the power source to power the surgical instrument or tool.
- the battery cells of the power assembly may be replaceable and/or rechargeable.
- the battery cells can be lithium-ion batteries which can be couplable to and separable from the power assembly.
- the motor driver 492 may be an A 3941 available from Allegro Microsystems, Inc.
- the A3941 492 is a full-bridge controller for use with external N-channel power metal-oxide semiconductor field-effect transistors (MOSFETs) specifically designed for inductive loads, such as brush DC motors.
- the driver 492 comprises a unique charge pump regulator that provides full (>10 V) gate drive for battery voltages down to 7 V and allows the A3941 to operate with a reduced gate drive, down to 5.5 V.
- a bootstrap capacitor may be employed to provide the above battery supply voltage required for N-channel MOSFETs.
- An internal charge pump for the high-side drive allows DC (100% duty cycle) operation.
- the full bridge can be driven in fast or slow decay modes using diode or synchronous rectification.
- current recirculation can be through the high-side or the lowside FETs.
- the power FETs are protected from shoot-through by resistor-adjustable dead time.
- Integrated diagnostics provide indications of undervoltage, overtemperature, and power bridge faults and can be configured to protect the power MOSFETs under most short circuit conditions.
- Other motor drivers may be readily substituted for use in the tracking system 480 comprising an absolute positioning system.
- the tracking system 480 comprises a controlled motor drive circuit arrangement comprising a position sensor 472 according to one aspect of this disclosure.
- the position sensor 472 for an absolute positioning system provides a unique position signal corresponding to the location of a displacement member.
- the displacement member represents a longitudinally movable drive member comprising a rack of drive teeth for meshing engagement with a corresponding drive gear of a gear reducer assembly.
- the displacement member represents the firing member, which could be adapted and configured to include a rack of drive teeth.
- the displacement member represents a firing bar or the I-beam, each of which can be adapted and configured to include a rack of drive teeth.
- the term displacement member is used generically to refer to any movable member of the surgical instrument or tool such as the drive member, the firing member, the firing bar, the I-beam, or any element that can be displaced.
- the longitudinally movable drive member is coupled to the firing member, the firing bar, and the I-beam.
- the absolute positioning system can, in effect, track the linear displacement of the I-beam by tracking the linear displacement of the longitudinally movable drive member.
- the displacement member may be coupled to any position sensor 472 suitable for measuring linear displacement.
- the longitudinally movable drive member, the firing member, the firing bar, or the I-beam, or combinations thereof may be coupled to any suitable linear displacement sensor.
- Linear displacement sensors may include contact or non-contact displacement sensors.
- Linear displacement sensors may comprise linear variable differential transformers (LVDT), differential variable reluctance transducers (DVRT), a slide potentiometer, a magnetic sensing system comprising a movable magnet and a series of linearly arranged Hall effect sensors, a magnetic sensing system comprising a fixed magnet and a series of movable, linearly arranged Hall effect sensors, an optical sensing system comprising a movable light source and a series of linearly arranged photo diodes or photo detectors, an optical sensing system comprising a fixed light source and a series of movable linearly, arranged photo diodes or photo detectors, or any combination thereof.
- LVDT linear variable differential transformers
- DVRT differential variable reluctance transducers
- slide potentiometer a magnetic sensing system comprising a movable magnet and a series of linearly arranged Hall effect sensors
- a magnetic sensing system comprising a fixed magnet and
- the electric motor 482 can include a rotatable shaft that operably interfaces with a gear assembly that is mounted in meshing engagement with a set, or rack, of drive teeth on the displacement member.
- a sensor element may be operably coupled to a gear assembly such that a single revolution of the position sensor 472 element corresponds to some linear longitudinal translation of the displacement member.
- An arrangement of gearing and sensors can be connected to the linear actuator, via a rack and pinion arrangement, or a rotary actuator, via a spur gear or other connection.
- a power source supplies power to the absolute positioning system and an output indicator may display the output of the absolute positioning system.
- the displacement member represents the longitudinally movable drive member comprising a rack of drive teeth formed thereon for meshing engagement with a corresponding drive gear of the gear reducer assembly.
- the displacement member represents the longitudinally movable firing member, firing bar, I-beam, or combinations thereof.
- a single revolution of the sensor element associated with the position sensor 472 is equivalent to a longitudinal linear displacement dl of the of the displacement member, where dl is the longitudinal linear distance that the displacement member moves from point “a” to point “b” after a single revolution of the sensor element coupled to the displacement member.
- the sensor arrangement may be connected via a gear reduction that results in the position sensor 472 completing one or more revolutions for the full stroke of the displacement member.
- the position sensor 472 may complete multiple revolutions for the full stroke of the displacement member.
- a series of switches may be employed alone or in combination with a gear reduction to provide a unique position signal for more than one revolution of the position sensor 472 .
- the state of the switches are fed back to the microcontroller 461 that applies logic to determine a unique position signal corresponding to the longitudinal linear displacement d 1 +d 2 + . . . dn of the displacement member.
- the output of the position sensor 472 is provided to the microcontroller 461 .
- the position sensor 472 of the sensor arrangement may comprise a magnetic sensor, an analog rotary sensor like a potentiometer, or an array of analog Hall-effect elements, which output a unique combination of position signals or values.
- the position sensor 472 may comprise any number of magnetic sensing elements, such as, for example, magnetic sensors classified according to whether they measure the total magnetic field or the vector components of the magnetic field.
- the techniques used to produce both types of magnetic sensors encompass many aspects of physics and electronics.
- the technologies used for magnetic field sensing include search coil, fluxgate, optically pumped, nuclear precession, SQUID, Hall-effect, anisotropic magnetoresistance, giant magnetoresistance, magnetic tunnel junctions, giant magnetoimpedance, magnetostrictive/piezoelectric composites, magnetodiode, magnetotransistor, fiber-optic, magneto-optic, and microelectromechanical systems-based magnetic sensors, among others.
- the position sensor 472 for the tracking system 480 comprising an absolute positioning system comprises a magnetic rotary absolute positioning system.
- the position sensor 472 may be implemented as an AS5055EQFT single-chip magnetic rotary position sensor available from Austria Microsystems, AG.
- the position sensor 472 is interfaced with the microcontroller 461 to provide an absolute positioning system.
- the position sensor 472 is a low-voltage and low-power component and includes four Hall-effect elements in an area of the position sensor 472 that is located above a magnet.
- a high-resolution ADC and a smart power management controller are also provided on the chip.
- a coordinate rotation digital computer (CORDIC) processor also known as the digit-by-digit method and Volder's algorithm, is provided to implement a simple and efficient algorithm to calculate hyperbolic and trigonometric functions that require only addition, subtraction, bitshift, and table lookup operations.
- the angle position, alarm bits, and magnetic field information are transmitted over a standard serial communication interface, such as a serial peripheral interface (SPI) interface, to the microcontroller 461 .
- the position sensor 472 provides 12 or 14 bits of resolution.
- the position sensor 472 may be an AS5055 chip provided in a small QFN 16-pin 4 ⁇ 4 ⁇ 0.85 mm package.
- the tracking system 480 comprising an absolute positioning system may comprise and/or be programmed to implement a feedback controller, such as a PID, state feedback, and adaptive controller.
- a power source converts the signal from the feedback controller into a physical input to the system: in this case the voltage.
- Other examples include a PWM of the voltage, current, and force.
- Other sensor(s) may be provided to measure physical parameters of the physical system in addition to the position measured by the position sensor 472 .
- the other sensor(s) can include sensor arrangements such as those described in U.S. Pat. No. 9,345,481, titled STAPLE CARTRIDGE TISSUE THICKNESS SENSOR SYSTEM, which issued on May 24, 2016, which is herein incorporated by reference in its entirety; U.S.
- Patent Application Publication No. 2014/0263552 titled STAPLE CARTRIDGE TISSUE THICKNESS SENSOR SYSTEM, which published on Sep. 18, 2014, which is herein incorporated by reference in its entirety; and U.S. patent application Ser. No. 15/628,175, titled TECHNIQUES FOR ADAPTIVE CONTROL OF MOTOR VELOCITY OF A SURGICAL STAPLING AND CUTTING INSTRUMENT, filed Jun. 20, 2017, which is herein incorporated by reference in its entirety.
- an absolute positioning system is coupled to a digital data acquisition system where the output of the absolute positioning system will have a finite resolution and sampling frequency.
- the absolute positioning system may comprise a compare-and-combine circuit to combine a computed response with a measured response using algorithms, such as a weighted average and a theoretical control loop, that drive the computed response towards the measured response.
- the computed response of the physical system takes into account properties like mass, inertial, viscous friction, inductance resistance, etc., to predict what the states and outputs of the physical system will be by knowing the input.
- the absolute positioning system provides an absolute position of the displacement member upon power-up of the instrument, without retracting or advancing the displacement member to a reset (zero or home) position as may be required with conventional rotary encoders that merely count the number of steps forwards or backwards that the motor 482 has taken to infer the position of a device actuator, drive bar, knife, or the like.
- a sensor 474 such as, for example, a strain gauge or a micro-strain gauge, is configured to measure one or more parameters of the end effector, such as, for example, the amplitude of the strain exerted on the anvil during a clamping operation, which can be indicative of the closure forces applied to the anvil.
- the measured strain is converted to a digital signal and provided to the processor 462 .
- a sensor 476 such as, for example, a load sensor, can measure the closure force applied by the closure drive system to the anvil.
- the sensor 476 such as, for example, a load sensor, can measure the firing force applied to an I-beam in a firing stroke of the surgical instrument or tool.
- the I-beam is configured to engage a wedge sled, which is configured to upwardly cam staple drivers to force out staples into deforming contact with an anvil.
- the I-beam also includes a sharpened cutting edge that can be used to sever tissue as the I-beam is advanced distally by the firing bar.
- a current sensor 478 can be employed to measure the current drawn by the motor 482 .
- the force required to advance the firing member can correspond to the current drawn by the motor 482 , for example.
- the measured force is converted to a digital signal and provided to the processor 462 .
- the strain gauge sensor 474 can be used to measure the force applied to the tissue by the end effector.
- a strain gauge can be coupled to the end effector to measure the force on the tissue being treated by the end effector.
- a system for measuring forces applied to the tissue grasped by the end effector comprises a strain gauge sensor 474 , such as, for example, a micro-strain gauge, that is configured to measure one or more parameters of the end effector, for example.
- the strain gauge sensor 474 can measure the amplitude or magnitude of the strain exerted on a jaw member of an end effector during a clamping operation, which can be indicative of the tissue compression. The measured strain is converted to a digital signal and provided to a processor 462 of the microcontroller 461 .
- a load sensor 476 can measure the force used to operate the knife element, for example, to cut the tissue captured between the anvil and the staple cartridge.
- a magnetic field sensor can be employed to measure the thickness of the captured tissue. The measurement of the magnetic field sensor also may be converted to a digital signal and provided to the processor 462 .
- a memory 468 may store a technique, an equation, and/or a lookup table which can be employed by the microcontroller 461 in the assessment.
- the control system 470 of the surgical instrument or tool also may comprise wired or wireless communication circuits to communicate with the modular communication hub as shown in FIGS. 8 - 11 .
- FIG. 13 illustrates a control circuit 500 configured to control aspects of the surgical instrument or tool according to one aspect of this disclosure.
- the control circuit 500 can be configured to implement various processes described herein.
- the control circuit 500 may comprise a microcontroller comprising one or more processors 502 (e.g., microprocessor, microcontroller) coupled to at least one memory circuit 504 .
- the memory circuit 504 stores machine-executable instructions that, when executed by the processor 502 , cause the processor 502 to execute machine instructions to implement various processes described herein.
- the processor 502 may be any one of a number of single-core or multicore processors known in the art.
- the memory circuit 504 may comprise volatile and non-volatile storage media.
- the processor 502 may include an instruction processing unit 506 and an arithmetic unit 508 .
- the instruction processing unit may be configured to receive instructions from the memory circuit 504 of this disclosure.
- FIG. 14 illustrates a combinational logic circuit 510 configured to control aspects of the surgical instrument or tool according to one aspect of this disclosure.
- the combinational logic circuit 510 can be configured to implement various processes described herein.
- the combinational logic circuit 510 may comprise a finite state machine comprising a combinational logic 512 configured to receive data associated with the surgical instrument or tool at an input 514 , process the data by the combinational logic 512 , and provide an output 516 .
- FIG. 15 illustrates a sequential logic circuit 520 configured to control aspects of the surgical instrument or tool according to one aspect of this disclosure.
- the sequential logic circuit 520 or the combinational logic 522 can be configured to implement various processes described herein.
- the sequential logic circuit 520 may comprise a finite state machine.
- the sequential logic circuit 520 may comprise a combinational logic 522 , at least one memory circuit 524 , and a clock 529 , for example.
- the at least one memory circuit 524 can store a current state of the finite state machine.
- the sequential logic circuit 520 may be synchronous or asynchronous.
- the combinational logic 522 is configured to receive data associated with the surgical instrument or tool from an input 526 , process the data by the combinational logic 522 , and provide an output 528 .
- the circuit may comprise a combination of a processor (e.g., processor 502 , FIG. 13 ) and a finite state machine to implement various processes herein.
- the finite state machine may comprise a combination of a combinational logic circuit (e.g., combinational logic circuit 510 , FIG. 14 ) and the sequential logic circuit 520 .
- FIG. 16 illustrates a surgical instrument or tool comprising a plurality of motors which can be activated to perform various functions.
- a first motor can be activated to perform a first function
- a second motor can be activated to perform a second function
- a third motor can be activated to perform a third function
- a fourth motor can be activated to perform a fourth function, and so on.
- the plurality of motors of robotic surgical instrument 600 can be individually activated to cause firing, closure, and/or articulation motions in the end effector. The firing, closure, and/or articulation motions can be transmitted to the end effector through a shaft assembly, for example.
- the surgical instrument system or tool may include a firing motor 602 .
- the firing motor 602 may be operably coupled to a firing motor drive assembly 604 which can be configured to transmit firing motions, generated by the motor 602 to the end effector, in particular to displace the I-beam element.
- the firing motions generated by the motor 602 may cause the staples to be deployed from the staple cartridge into tissue captured by the end effector and/or the cutting edge of the I-beam element to be advanced to cut the captured tissue, for example.
- the I-beam element may be retracted by reversing the direction of the motor 602 .
- the surgical instrument or tool may include a closure motor 603 .
- the closure motor 603 may be operably coupled to a closure motor drive assembly 605 which can be configured to transmit closure motions, generated by the motor 603 to the end effector, in particular to displace a closure tube to close the anvil and compress tissue between the anvil and the staple cartridge.
- the closure motions may cause the end effector to transition from an open configuration to an approximated configuration to capture tissue, for example.
- the end effector may be transitioned to an open position by reversing the direction of the motor 603 .
- the surgical instrument or tool may include one or more articulation motors 606 a , 606 b , for example.
- the motors 606 a , 606 b may be operably coupled to respective articulation motor drive assemblies 608 a , 608 b , which can be configured to transmit articulation motions generated by the motors 606 a , 606 b to the end effector.
- the articulation motions may cause the end effector to articulate relative to the shaft, for example.
- the surgical instrument or tool may include a plurality of motors which may be configured to perform various independent functions.
- the plurality of motors of the surgical instrument or tool can be individually or separately activated to perform one or more functions while the other motors remain inactive.
- the articulation motors 606 a , 606 b can be activated to cause the end effector to be articulated while the firing motor 602 remains inactive.
- the firing motor 602 can be activated to fire the plurality of staples, and/or to advance the cutting edge, while the articulation motor 606 remains inactive.
- the closure motor 603 may be activated simultaneously with the firing motor 602 to cause the closure tube and the I-beam element to advance distally as described in more detail hereinbelow.
- the surgical instrument or tool may include a common control module 610 which can be employed with a plurality of motors of the surgical instrument or tool.
- the common control module 610 may accommodate one of the plurality of motors at a time.
- the common control module 610 can be couplable to and separable from the plurality of motors of the robotic surgical instrument individually.
- a plurality of the motors of the surgical instrument or tool may share one or more common control modules such as the common control module 610 .
- a plurality of motors of the surgical instrument or tool can be individually and selectively engaged with the common control module 610 .
- the common control module 610 can be selectively switched from interfacing with one of a plurality of motors of the surgical instrument or tool to interfacing with another one of the plurality of motors of the surgical instrument or tool.
- the common control module 610 can be selectively switched between operable engagement with the articulation motors 606 a , 606 b and operable engagement with either the firing motor 602 or the closure motor 603 .
- a switch 614 can be moved or transitioned between a plurality of positions and/or states.
- the switch 614 may electrically couple the common control module 610 to the firing motor 602 ; in a second position 617 , the switch 614 may electrically couple the common control module 610 to the closure motor 603 ; in a third position 618 a , the switch 614 may electrically couple the common control module 610 to the first articulation motor 606 a ; and in a fourth position 618 b , the switch 614 may electrically couple the common control module 610 to the second articulation motor 606 b , for example.
- separate common control modules 610 can be electrically coupled to the firing motor 602 , the closure motor 603 , and the articulations motor 606 a , 606 b at the same time.
- the switch 614 may be a mechanical switch, an electromechanical switch, a solid-state switch, or any suitable switching mechanism.
- Each of the motors 602 , 603 , 606 a , 606 b may comprise a torque sensor to measure the output torque on the shaft of the motor.
- the force on an end effector may be sensed in any conventional manner, such as by force sensors on the outer sides of the jaws or by a torque sensor for the motor actuating the jaws.
- the common control module 610 may comprise a motor driver 626 which may comprise one or more H-Bridge FETs.
- the motor driver 626 may modulate the power transmitted from a power source 628 to a motor coupled to the common control module 610 based on input from a microcontroller 620 (the “controller”), for example.
- the microcontroller 620 can be employed to determine the current drawn by the motor, for example, while the motor is coupled to the common control module 610 , as described above.
- the microcontroller 620 may include a microprocessor 622 (the “processor”) and one or more non-transitory computer-readable mediums or memory units 624 (the “memory”).
- the memory 624 may store various program instructions, which when executed may cause the processor 622 to perform a plurality of functions and/or calculations described herein.
- one or more of the memory units 624 may be coupled to the processor 622 , for example.
- the power source 628 can be employed to supply power to the microcontroller 620 , for example.
- the power source 628 may comprise a battery (or “battery pack” or “power pack”), such as a lithium-ion battery, for example.
- the battery pack may be configured to be releasably mounted to a handle for supplying power to the surgical instrument 600 .
- a number of battery cells connected in series may be used as the power source 628 .
- the power source 628 may be replaceable and/or rechargeable, for example.
- the processor 622 may control the motor driver 626 to control the position, direction of rotation, and/or velocity of a motor that is coupled to the common control module 610 . In certain instances, the processor 622 can signal the motor driver 626 to stop and/or disable a motor that is coupled to the common control module 610 .
- processor includes any suitable microprocessor, microcontroller, or other basic computing device that incorporates the functions of a computer's central processing unit (CPU) on an integrated circuit or, at most, a few integrated circuits.
- the processor is a multipurpose, programmable device that accepts digital data as input, processes it according to instructions stored in its memory, and provides results as output. It is an example of sequential digital logic, as it has internal memory. Processors operate on numbers and symbols represented in the binary numeral system.
- the processor 622 may be any single-core or multicore processor such as those known under the trade name ARM Cortex by Texas Instruments.
- the microcontroller 620 may be an LM 4F230H5QR, available from Texas Instruments, for example.
- the Texas Instruments LM4F230H5QR is an ARM Cortex-M4F Processor Core comprising an on-chip memory of 256 KB single-cycle flash memory, or other non-volatile memory, up to 40 MHz, a prefetch buffer to improve performance above 40 MHz, a 32 KB single-cycle SRAM, an internal ROM loaded with StellarisWare® software, a 2 KB EEPROM, one or more PWM modules, one or more QEI analogs, one or more 12-bit ADCs with 12 analog input channels, among other features that are readily available for the product datasheet.
- Other microcontrollers may be readily substituted for use with the module 4410 . Accordingly, the present disclosure should not be limited in this context.
- the memory 624 may include program instructions for controlling each of the motors of the surgical instrument 600 that are couplable to the common control module 610 .
- the memory 624 may include program instructions for controlling the firing motor 602 , the closure motor 603 , and the articulation motors 606 a , 606 b .
- Such program instructions may cause the processor 622 to control the firing, closure, and articulation functions in accordance with inputs from algorithms or control programs of the surgical instrument or tool.
- one or more mechanisms and/or sensors such as, for example, sensors 630 can be employed to alert the processor 622 to the program instructions that should be used in a particular setting.
- the sensors 630 may alert the processor 622 to use the program instructions associated with firing, closing, and articulating the end effector.
- the sensors 630 may comprise position sensors which can be employed to sense the position of the switch 614 , for example.
- the processor 622 may use the program instructions associated with firing the I-beam of the end effector upon detecting, through the sensors 630 for example, that the switch 614 is in the first position 616 ; the processor 622 may use the program instructions associated with closing the anvil upon detecting, through the sensors 630 for example, that the switch 614 is in the second position 617 ; and the processor 622 may use the program instructions associated with articulating the end effector upon detecting, through the sensors 630 for example, that the switch 614 is in the third or fourth position 618 a , 618 b.
- FIG. 17 is a schematic diagram of a robotic surgical instrument 700 configured to operate a surgical tool described herein according to one aspect of this disclosure.
- the robotic surgical instrument 700 may be programmed or configured to control distal/proximal translation of a displacement member, distal/proximal displacement of a closure tube, shaft rotation, and articulation, either with single or multiple articulation drive links.
- the surgical instrument 700 may be programmed or configured to individually control a firing member, a closure member, a shaft member, and/or one or more articulation members.
- the surgical instrument 700 comprises a control circuit 710 configured to control motor-driven firing members, closure members, shaft members, and/or one or more articulation members.
- the robotic surgical instrument 700 comprises a control circuit 710 configured to control an anvil 716 and an I-beam 714 (including a sharp cutting edge) portion of an end effector 702 , a removable staple cartridge 718 , a shaft 740 , and one or more articulation members 742 a , 742 b via a plurality of motors 704 a - 704 e .
- a position sensor 734 may be configured to provide position feedback of the I-beam 714 to the control circuit 710 .
- Other sensors 738 may be configured to provide feedback to the control circuit 710 .
- a timer/counter 731 provides timing and counting information to the control circuit 710 .
- An energy source 712 may be provided to operate the motors 704 a - 704 e , and a current sensor 736 provides motor current feedback to the control circuit 710 .
- the motors 704 a - 704 e can be operated individually by the control circuit 710 in an open-loop or closed-loop feedback control.
- control circuit 710 may comprise one or more microcontrollers, microprocessors, or other suitable processors for executing instructions that cause the processor or processors to perform one or more tasks.
- a timer/counter 731 provides an output signal, such as the elapsed time or a digital count, to the control circuit 710 to correlate the position of the I-beam 714 as determined by the position sensor 734 with the output of the timer/counter 731 such that the control circuit 710 can determine the position of the I-beam 714 at a specific time (t) relative to a starting position or the time (t) when the I-beam 714 is at a specific position relative to a starting position.
- the timer/counter 731 may be configured to measure elapsed time, count external events, or time external events.
- control circuit 710 may be programmed to control functions of the end effector 702 based on one or more tissue conditions.
- the control circuit 710 may be programmed to sense tissue conditions, such as thickness, either directly or indirectly, as described herein.
- the control circuit 710 may be programmed to select a firing control program or closure control program based on tissue conditions.
- a firing control program may describe the distal motion of the displacement member. Different firing control programs may be selected to better treat different tissue conditions. For example, when thicker tissue is present, the control circuit 710 may be programmed to translate the displacement member at a lower velocity and/or with lower power. When thinner tissue is present, the control circuit 710 may be programmed to translate the displacement member at a higher velocity and/or with higher power.
- a closure control program may control the closure force applied to the tissue by the anvil 716 .
- Other control programs control the rotation of the shaft 740 and the articulation members 742 a , 742 b .
- control circuit 710 may generate motor set point signals.
- the motor set point signals may be provided to various motor controllers 708 a - 708 e .
- the motor controllers 708 a - 708 e may comprise one or more circuits configured to provide motor drive signals to the motors 704 a - 704 e to drive the motors 704 a - 704 e as described herein.
- the motors 704 a - 704 e may be brushed DC electric motors.
- the velocity of the motors 704 a - 704 e may be proportional to the respective motor drive signals.
- the motors 704 a - 704 e may be brushless DC electric motors, and the respective motor drive signals may comprise a PWM signal provided to one or more stator windings of the motors 704 a - 704 e .
- the motor controllers 708 a - 708 e may be omitted and the control circuit 710 may generate the motor drive signals directly.
- control circuit 710 may initially operate each of the motors 704 a - 704 e in an open-loop configuration for a first open-loop portion of a stroke of the displacement member. Based on the response of the robotic surgical instrument 700 during the open-loop portion of the stroke, the control circuit 710 may select a firing control program in a closed-loop configuration.
- the response of the instrument may include a translation distance of the displacement member during the open-loop portion, a time elapsed during the open-loop portion, the energy provided to one of the motors 704 a - 704 e during the open-loop portion, a sum of pulse widths of a motor drive signal, etc.
- the control circuit 710 may implement the selected firing control program for a second portion of the displacement member stroke. For example, during a closed-loop portion of the stroke, the control circuit 710 may modulate one of the motors 704 a - 704 e based on translation data describing a position of the displacement member in a closed-loop manner to translate the displacement member at a constant velocity.
- the motors 704 a - 704 e may receive power from an energy source 712 .
- the energy source 712 may be a DC power supply driven by a main alternating current power source, a battery, a super capacitor, or any other suitable energy source.
- the motors 704 a - 704 e may be mechanically coupled to individual movable mechanical elements such as the I-beam 714 , anvil 716 , shaft 740 , articulation 742 a , and articulation 742 b via respective transmissions 706 a - 706 e .
- the transmissions 706 a - 706 e may include one or more gears or other linkage components to couple the motors 704 a - 704 e to movable mechanical elements.
- a position sensor 734 may sense a position of the I-beam 714 .
- the position sensor 734 may be or include any type of sensor that is capable of generating position data that indicate a position of the I-beam 714 .
- the position sensor 734 may include an encoder configured to provide a series of pulses to the control circuit 710 as the I-beam 714 translates distally and proximally.
- the control circuit 710 may track the pulses to determine the position of the I-beam 714 .
- the position sensor 734 may be omitted. Where any of the motors 704 a - 704 e is a stepper motor, the control circuit 710 may track the position of the I-beam 714 by aggregating the number and direction of steps that the motor 704 has been instructed to execute. The position sensor 734 may be located in the end effector 702 or at any other portion of the instrument.
- the outputs of each of the motors 704 a - 704 e include a torque sensor 744 a - 744 e to sense force and have an encoder to sense rotation of the drive shaft.
- control circuit 710 is configured to drive a firing member such as the I-beam 714 portion of the end effector 702 .
- the control circuit 710 provides a motor set point to a motor control 708 a , which provides a drive signal to the motor 704 a .
- the output shaft of the motor 704 a is coupled to a torque sensor 744 a .
- the torque sensor 744 a is coupled to a transmission 706 a which is coupled to the I-beam 714 .
- the transmission 706 a comprises movable mechanical elements such as rotating elements and a firing member to control the movement of the I-beam 714 distally and proximally along a longitudinal axis of the end effector 702 .
- the motor 704 a may be coupled to the knife gear assembly, which includes a knife gear reduction set that includes a first knife drive gear and a second knife drive gear.
- a torque sensor 744 a provides a firing force feedback signal to the control circuit 710 .
- the firing force signal represents the force required to fire or displace the I-beam 714 .
- a position sensor 734 may be configured to provide the position of the I-beam 714 along the firing stroke or the position of the firing member as a feedback signal to the control circuit 710 .
- the end effector 702 may include additional sensors 738 configured to provide feedback signals to the control circuit 710 . When ready to use, the control circuit 710 may provide a firing signal to the motor control 708 a .
- the motor 704 a may drive the firing member distally along the longitudinal axis of the end effector 702 from a proximal stroke start position to a stroke end position distal to the stroke start position.
- an I-beam 714 With a cutting element positioned at a distal end, advances distally to cut tissue located between the staple cartridge 718 and the anvil 716 .
- control circuit 710 is configured to drive a closure member such as the anvil 716 portion of the end effector 702 .
- the control circuit 710 provides a motor set point to a motor control 708 b , which provides a drive signal to the motor 704 b .
- the output shaft of the motor 704 b is coupled to a torque sensor 744 b .
- the torque sensor 744 b is coupled to a transmission 706 b which is coupled to the anvil 716 .
- the transmission 706 b comprises movable mechanical elements such as rotating elements and a closure member to control the movement of the anvil 716 from the open and closed positions.
- the motor 704 b is coupled to a closure gear assembly, which includes a closure reduction gear set that is supported in meshing engagement with the closure spur gear.
- the torque sensor 744 b provides a closure force feedback signal to the control circuit 710 .
- the closure force feedback signal represents the closure force applied to the anvil 716 .
- the position sensor 734 may be configured to provide the position of the closure member as a feedback signal to the control circuit 710 . Additional sensors 738 in the end effector 702 may provide the closure force feedback signal to the control circuit 710 .
- the pivotable anvil 716 is positioned opposite the staple cartridge 718 .
- the control circuit 710 may provide a closure signal to the motor control 708 b .
- the motor 704 b advances a closure member to grasp tissue between the anvil 716 and the staple cartridge 718 .
- control circuit 710 is configured to rotate a shaft member such as the shaft 740 to rotate the end effector 702 .
- the control circuit 710 provides a motor set point to a motor control 708 c , which provides a drive signal to the motor 704 c .
- the output shaft of the motor 704 c is coupled to a torque sensor 744 c .
- the torque sensor 744 c is coupled to a transmission 706 c which is coupled to the shaft 740 .
- the transmission 706 c comprises movable mechanical elements such as rotating elements to control the rotation of the shaft 740 clockwise or counterclockwise up to and over 360°.
- the motor 704 c is coupled to the rotational transmission assembly, which includes a tube gear segment that is formed on (or attached to) the proximal end of the proximal closure tube for operable engagement by a rotational gear assembly that is operably supported on the tool mounting plate.
- the torque sensor 744 c provides a rotation force feedback signal to the control circuit 710 .
- the rotation force feedback signal represents the rotation force applied to the shaft 740 .
- the position sensor 734 may be configured to provide the position of the closure member as a feedback signal to the control circuit 710 .
- Additional sensors 738 such as a shaft encoder may provide the rotational position of the shaft 740 to the control circuit 710 .
- control circuit 710 is configured to articulate the end effector 702 .
- the control circuit 710 provides a motor set point to a motor control 708 d , which provides a drive signal to the motor 704 d .
- the output shaft of the motor 704 d is coupled to a torque sensor 744 d .
- the torque sensor 744 d is coupled to a transmission 706 d which is coupled to an articulation member 742 a .
- the transmission 706 d comprises movable mechanical elements such as articulation elements to control the articulation of the end effector 702 ⁇ 65°.
- the motor 704 d is coupled to an articulation nut, which is rotatably journaled on the proximal end portion of the distal spine portion and is rotatably driven thereon by an articulation gear assembly.
- the torque sensor 744 d provides an articulation force feedback signal to the control circuit 710 .
- the articulation force feedback signal represents the articulation force applied to the end effector 702 .
- Sensors 738 such as an articulation encoder, may provide the articulation position of the end effector 702 to the control circuit 710 .
- the articulation function of the robotic surgical system 700 may comprise two articulation members, or links, 742 a , 742 b .
- These articulation members 742 a , 742 b are driven by separate disks on the robot interface (the rack), which are driven by the two motors 708 d , 708 e .
- each of articulation links 742 a , 742 b can be antagonistically driven with respect to the other link in order to provide a resistive holding motion and a load to the head when it is not moving and to provide an articulation motion as the head is articulated.
- the articulation members 742 a , 742 b attach to the head at a fixed radius as the head is rotated. Accordingly, the mechanical advantage of the push-and-pull link changes as the head is rotated. This change in the mechanical advantage may be more pronounced with other articulation link drive systems.
- the one or more motors 704 a - 704 e may comprise a brushed DC motor with a gearbox and mechanical links to a firing member, closure member, or articulation member.
- Another example includes electric motors 704 a - 704 e that operate the movable mechanical elements such as the displacement member, articulation links, closure tube, and shaft.
- An outside influence is an unmeasured, unpredictable influence of things like tissue, surrounding bodies, and friction on the physical system. Such outside influence can be referred to as drag, which acts in opposition to one of electric motors 704 a - 704 e .
- the outside influence, such as drag may cause the operation of the physical system to deviate from a desired operation of the physical system.
- the position sensor 734 may be implemented as an absolute positioning system.
- the position sensor 734 may comprise a magnetic rotary absolute positioning system implemented as an AS5055EQFT single-chip magnetic rotary position sensor available from Austria Microsystems, AG.
- the position sensor 734 may interface with the control circuit 710 to provide an absolute positioning system.
- the position may include multiple Hall-effect elements located above a magnet and coupled to a CORDIC processor, also known as the digit-by-digit method and Volder's algorithm, that is provided to implement a simple and efficient algorithm to calculate hyperbolic and trigonometric functions that require only addition, subtraction, bitshift, and table lookup operations.
- CORDIC processor also known as the digit-by-digit method and Volder's algorithm
- the control circuit 710 may be in communication with one or more sensors 738 .
- the sensors 738 may be positioned on the end effector 702 and adapted to operate with the robotic surgical instrument 700 to measure the various derived parameters such as the gap distance versus time, tissue compression versus time, and anvil strain versus time.
- the sensors 738 may comprise a magnetic sensor, a magnetic field sensor, a strain gauge, a load cell, a pressure sensor, a force sensor, a torque sensor, an inductive sensor such as an eddy current sensor, a resistive sensor, a capacitive sensor, an optical sensor, and/or any other suitable sensor for measuring one or more parameters of the end effector 702 .
- the sensors 738 may include one or more sensors.
- the sensors 738 may be located on the staple cartridge 718 deck to determine tissue location using segmented electrodes.
- the torque sensors 744 a - 744 e may be configured to sense force such as firing force, closure force, and/or articulation force, among others. Accordingly, the control circuit 710 can sense (1) the closure load experienced by the distal closure tube and its position, (2) the firing member at the rack and its position, (3) what portion of the staple cartridge 718 has tissue on it, and (4) the load and position on both articulation rods.
- the one or more sensors 738 may comprise a strain gauge, such as a micro-strain gauge, configured to measure the magnitude of the strain in the anvil 716 during a clamped condition.
- the strain gauge provides an electrical signal whose amplitude varies with the magnitude of the strain.
- the sensors 738 may comprise a pressure sensor configured to detect a pressure generated by the presence of compressed tissue between the anvil 716 and the staple cartridge 718 .
- the sensors 738 may be configured to detect impedance of a tissue section located between the anvil 716 and the staple cartridge 718 that is indicative of the thickness and/or fullness of tissue located therebetween.
- the sensors 738 may be implemented as one or more limit switches, electromechanical devices, solid-state switches, Hall-effect devices, magneto-resistive (MR) devices, giant magneto-resistive (GMR) devices, magnetometers, among others.
- the sensors 738 may be implemented as solid-state switches that operate under the influence of light, such as optical sensors, IR sensors, ultraviolet sensors, among others.
- the switches may be solid-state devices such as transistors (e.g., FET, junction FET, MOSFET, bipolar, and the like).
- the sensors 738 may include electrical conductorless switches, ultrasonic switches, accelerometers, and inertial sensors, among others.
- the sensors 738 may be configured to measure forces exerted on the anvil 716 by the closure drive system.
- one or more sensors 738 can be at an interaction point between the closure tube and the anvil 716 to detect the closure forces applied by the closure tube to the anvil 716 .
- the forces exerted on the anvil 716 can be representative of the tissue compression experienced by the tissue section captured between the anvil 716 and the staple cartridge 718 .
- the one or more sensors 738 can be positioned at various interaction points along the closure drive system to detect the closure forces applied to the anvil 716 by the closure drive system.
- the one or more sensors 738 may be sampled in real time during a clamping operation by the processor of the control circuit 710 .
- the control circuit 710 receives real-time sample measurements to provide and analyze time-based information and assess, in real time, closure forces applied to the anvil 716 .
- a current sensor 736 can be employed to measure the current drawn by each of the motors 704 a - 704 e .
- the force required to advance any of the movable mechanical elements such as the I-beam 714 corresponds to the current drawn by one of the motors 704 a - 704 e .
- the force is converted to a digital signal and provided to the control circuit 710 .
- the control circuit 710 can be configured to simulate the response of the actual system of the instrument in the software of the controller.
- a displacement member can be actuated to move an I-beam 714 in the end effector 702 at or near a target velocity.
- the robotic surgical instrument 700 can include a feedback controller, which can be one of any feedback controllers, including, but not limited to a PID, a state feedback, a linear-quadratic (LQR), and/or an adaptive controller, for example.
- the robotic surgical instrument 700 can include a power source to convert the signal from the feedback controller into a physical input such as case voltage, PWM voltage, frequency modulated voltage, current, torque, and/or force, for example. Additional details are disclosed in U.S. patent application Ser. No. 15/636,829, titled CLOSED LOOP VELOCITY CONTROL TECHNIQUES FOR ROBOTIC SURGICAL INSTRUMENT, filed Jun. 29, 2017, which is herein incorporated by reference in its entirety.
- FIG. 18 illustrates a block diagram of a surgical instrument 750 programmed to control the distal translation of a displacement member according to one aspect of this disclosure.
- the surgical instrument 750 is programmed to control the distal translation of a displacement member such as the I-beam 764 .
- the surgical instrument 750 comprises an end effector 752 that may comprise an anvil 766 , an I-beam 764 (including a sharp cutting edge), and a removable staple cartridge 768 .
- the position, movement, displacement, and/or translation of a linear displacement member, such as the I-beam 764 can be measured by an absolute positioning system, sensor arrangement, and position sensor 784 . Because the I-beam 764 is coupled to a longitudinally movable drive member, the position of the I-beam 764 can be determined by measuring the position of the longitudinally movable drive member employing the position sensor 784 . Accordingly, in the following description, the position, displacement, and/or translation of the I-beam 764 can be achieved by the position sensor 784 as described herein.
- a control circuit 760 may be programmed to control the translation of the displacement member, such as the I-beam 764 .
- the control circuit 760 may comprise one or more microcontrollers, microprocessors, or other suitable processors for executing instructions that cause the processor or processors to control the displacement member, e.g., the I-beam 764 , in the manner described.
- a timer/counter 781 provides an output signal, such as the elapsed time or a digital count, to the control circuit 760 to correlate the position of the I-beam 764 as determined by the position sensor 784 with the output of the timer/counter 781 such that the control circuit 760 can determine the position of the I-beam 764 at a specific time (t) relative to a starting position.
- the timer/counter 781 may be configured to measure elapsed time, count external events, or time external events.
- the control circuit 760 may generate a motor set point signal 772 .
- the motor set point signal 772 may be provided to a motor controller 758 .
- the motor controller 758 may comprise one or more circuits configured to provide a motor drive signal 774 to the motor 754 to drive the motor 754 as described herein.
- the motor 754 may be a brushed DC electric motor.
- the velocity of the motor 754 may be proportional to the motor drive signal 774 .
- the motor 754 may be a brushless DC electric motor and the motor drive signal 774 may comprise a PWM signal provided to one or more stator windings of the motor 754 .
- the motor controller 758 may be omitted, and the control circuit 760 may generate the motor drive signal 774 directly.
- the motor 754 may receive power from an energy source 762 .
- the energy source 762 may be or include a battery, a super capacitor, or any other suitable energy source.
- the motor 754 may be mechanically coupled to the I-beam 764 via a transmission 756 .
- the transmission 756 may include one or more gears or other linkage components to couple the motor 754 to the I-beam 764 .
- a position sensor 784 may sense a position of the I-beam 764 .
- the position sensor 784 may be or include any type of sensor that is capable of generating position data that indicate a position of the I-beam 764 .
- the position sensor 784 may include an encoder configured to provide a series of pulses to the control circuit 760 as the I-beam 764 translates distally and proximally.
- the control circuit 760 may track the pulses to determine the position of the I-beam 764 .
- Other suitable position sensors may be used, including, for example, a proximity sensor. Other types of position sensors may provide other signals indicating motion of the I-beam 764 .
- the position sensor 784 may be omitted. Where the motor 754 is a stepper motor, the control circuit 760 may track the position of the I-beam 764 by aggregating the number and direction of steps that the motor 754 has been instructed to execute.
- the position sensor 784 may be located in the end effector 752 or at any other portion of the instrument.
- the control circuit 760 may be in communication with one or more sensors 788 .
- the sensors 788 may be positioned on the end effector 752 and adapted to operate with the surgical instrument 750 to measure the various derived parameters such as gap distance versus time, tissue compression versus time, and anvil strain versus time.
- the sensors 788 may comprise a magnetic sensor, a magnetic field sensor, a strain gauge, a pressure sensor, a force sensor, an inductive sensor such as an eddy current sensor, a resistive sensor, a capacitive sensor, an optical sensor, and/or any other suitable sensor for measuring one or more parameters of the end effector 752 .
- the sensors 788 may include one or more sensors.
- the one or more sensors 788 may comprise a strain gauge, such as a micro-strain gauge, configured to measure the magnitude of the strain in the anvil 766 during a clamped condition.
- the strain gauge provides an electrical signal whose amplitude varies with the magnitude of the strain.
- the sensors 788 may comprise a pressure sensor configured to detect a pressure generated by the presence of compressed tissue between the anvil 766 and the staple cartridge 768 .
- the sensors 788 may be configured to detect impedance of a tissue section located between the anvil 766 and the staple cartridge 768 that is indicative of the thickness and/or fullness of tissue located therebetween.
- the sensors 788 may be is configured to measure forces exerted on the anvil 766 by a closure drive system.
- one or more sensors 788 can be at an interaction point between a closure tube and the anvil 766 to detect the closure forces applied by a closure tube to the anvil 766 .
- the forces exerted on the anvil 766 can be representative of the tissue compression experienced by the tissue section captured between the anvil 766 and the staple cartridge 768 .
- the one or more sensors 788 can be positioned at various interaction points along the closure drive system to detect the closure forces applied to the anvil 766 by the closure drive system.
- the one or more sensors 788 may be sampled in real time during a clamping operation by a processor of the control circuit 760 .
- the control circuit 760 receives real-time sample measurements to provide and analyze time-based information and assess, in real time, closure forces applied to the anvil 766 .
- a current sensor 786 can be employed to measure the current drawn by the motor 754 .
- the force required to advance the I-beam 764 corresponds to the current drawn by the motor 754 .
- the force is converted to a digital signal and provided to the control circuit 760 .
- the control circuit 760 can be configured to simulate the response of the actual system of the instrument in the software of the controller.
- a displacement member can be actuated to move an I-beam 764 in the end effector 752 at or near a target velocity.
- the surgical instrument 750 can include a feedback controller, which can be one of any feedback controllers, including, but not limited to a PID, a state feedback, LQR, and/or an adaptive controller, for example.
- the surgical instrument 750 can include a power source to convert the signal from the feedback controller into a physical input such as case voltage, PWM voltage, frequency modulated voltage, current, torque, and/or force, for example.
- the actual drive system of the surgical instrument 750 is configured to drive the displacement member, cutting member, or I-beam 764 , by a brushed DC motor with gearbox and mechanical links to an articulation and/or knife system.
- a brushed DC motor with gearbox and mechanical links to an articulation and/or knife system.
- the electric motor 754 that operates the displacement member and the articulation driver, for example, of an interchangeable shaft assembly.
- An outside influence is an unmeasured, unpredictable influence of things like tissue, surrounding bodies and friction on the physical system. Such outside influence can be referred to as drag which acts in opposition to the electric motor 754 .
- the outside influence, such as drag may cause the operation of the physical system to deviate from a desired operation of the physical system.
- a surgical instrument 750 comprising an end effector 752 with motor-driven surgical stapling and cutting implements.
- a motor 754 may drive a displacement member distally and proximally along a longitudinal axis of the end effector 752 .
- the end effector 752 may comprise a pivotable anvil 766 and, when configured for use, a staple cartridge 768 positioned opposite the anvil 766 .
- a clinician may grasp tissue between the anvil 766 and the staple cartridge 768 , as described herein.
- the clinician may provide a firing signal, for example by depressing a trigger of the instrument 750 .
- the motor 754 may drive the displacement member distally along the longitudinal axis of the end effector 752 from a proximal stroke begin position to a stroke end position distal of the stroke begin position.
- an I-beam 764 with a cutting element positioned at a distal end may cut the tissue between the staple cartridge 768 and the anvil 766 .
- the surgical instrument 750 may comprise a control circuit 760 programmed to control the distal translation of the displacement member, such as the I-beam 764 , for example, based on one or more tissue conditions.
- the control circuit 760 may be programmed to sense tissue conditions, such as thickness, either directly or indirectly, as described herein.
- the control circuit 760 may be programmed to select a firing control program based on tissue conditions.
- a firing control program may describe the distal motion of the displacement member. Different firing control programs may be selected to better treat different tissue conditions. For example, when thicker tissue is present, the control circuit 760 may be programmed to translate the displacement member at a lower velocity and/or with lower power. When thinner tissue is present, the control circuit 760 may be programmed to translate the displacement member at a higher velocity and/or with higher power.
- control circuit 760 may initially operate the motor 754 in an open loop configuration for a first open loop portion of a stroke of the displacement member. Based on a response of the instrument 750 during the open loop portion of the stroke, the control circuit 760 may select a firing control program.
- the response of the instrument may include, a translation distance of the displacement member during the open loop portion, a time elapsed during the open loop portion, energy provided to the motor 754 during the open loop portion, a sum of pulse widths of a motor drive signal, etc.
- the control circuit 760 may implement the selected firing control program for a second portion of the displacement member stroke.
- control circuit 760 may modulate the motor 754 based on translation data describing a position of the displacement member in a closed loop manner to translate the displacement member at a constant velocity. Additional details are disclosed in U.S. Patent Application Ser. No. 15/720,852, titled SYSTEM AND METHODS FOR CONTROLLING A DISPLAY OF A SURGICAL INSTRUMENT, filed Sep. 29, 2017, which is herein incorporated by reference in its entirety.
- FIG. 19 is a schematic diagram of a surgical instrument 790 configured to control various functions according to one aspect of this disclosure.
- the surgical instrument 790 is programmed to control distal translation of a displacement member such as the I-beam 764 .
- the surgical instrument 790 comprises an end effector 792 that may comprise an anvil 766 , an I-beam 764 , and a removable staple cartridge 768 which may be interchanged with an RF cartridge 796 (shown in dashed line).
- sensors 788 may be implemented as a limit switch, electromechanical device, solid-state switches, Hall-effect devices, MR devices, GMR devices, magnetometers, among others.
- the sensors 638 may be solid-state switches that operate under the influence of light, such as optical sensors, IR sensors, ultraviolet sensors, among others.
- the switches may be solid-state devices such as transistors (e.g., FET, junction FET, MOSFET, bipolar, and the like).
- the sensors 788 may include electrical conductorless switches, ultrasonic switches, accelerometers, and inertial sensors, among others.
- the position sensor 784 may be implemented as an absolute positioning system comprising a magnetic rotary absolute positioning system implemented as an AS 5055 EQFT single-chip magnetic rotary position sensor available from Austria Microsystems, AG.
- the position sensor 784 may interface with the control circuit 760 to provide an absolute positioning system.
- the position may include multiple Hall-effect elements located above a magnet and coupled to a CORDIC processor, also known as the digit-by-digit method and Volder's algorithm, that is provided to implement a simple and efficient algorithm to calculate hyperbolic and trigonometric functions that require only addition, subtraction, bitshift, and table lookup operations.
- CORDIC processor also known as the digit-by-digit method and Volder's algorithm
- the I-beam 764 may be implemented as a knife member comprising a knife body that operably supports a tissue cutting blade thereon and may further include anvil engagement tabs or features and channel engagement features or a foot.
- the staple cartridge 768 may be implemented as a standard (mechanical) surgical fastener cartridge.
- the RF cartridge 796 may be implemented as an RF cartridge.
- the position, movement, displacement, and/or translation of a linear displacement member, such as the I-beam 764 can be measured by an absolute positioning system, sensor arrangement, and position sensor represented as position sensor 784 . Because the I-beam 764 is coupled to the longitudinally movable drive member, the position of the I-beam 764 can be determined by measuring the position of the longitudinally movable drive member employing the position sensor 784 . Accordingly, in the following description, the position, displacement, and/or translation of the I-beam 764 can be achieved by the position sensor 784 as described herein.
- a control circuit 760 may be programmed to control the translation of the displacement member, such as the I-beam 764 , as described herein.
- the control circuit 760 may comprise one or more microcontrollers, microprocessors, or other suitable processors for executing instructions that cause the processor or processors to control the displacement member, e.g., the I-beam 764 , in the manner described.
- a timer/counter 781 provides an output signal, such as the elapsed time or a digital count, to the control circuit 760 to correlate the position of the I-beam 764 as determined by the position sensor 784 with the output of the timer/counter 781 such that the control circuit 760 can determine the position of the I-beam 764 at a specific time (t) relative to a starting position.
- the timer/counter 781 may be configured to measure elapsed time, count external events, or time external events.
- the control circuit 760 may generate a motor set point signal 772 .
- the motor set point signal 772 may be provided to a motor controller 758 .
- the motor controller 758 may comprise one or more circuits configured to provide a motor drive signal 774 to the motor 754 to drive the motor 754 as described herein.
- the motor 754 may be a brushed DC electric motor.
- the velocity of the motor 754 may be proportional to the motor drive signal 774 .
- the motor 754 may be a brushless DC electric motor and the motor drive signal 774 may comprise a PWM signal provided to one or more stator windings of the motor 754 .
- the motor controller 758 may be omitted, and the control circuit 760 may generate the motor drive signal 774 directly.
- the motor 754 may receive power from an energy source 762 .
- the energy source 762 may be or include a battery, a super capacitor, or any other suitable energy source.
- the motor 754 may be mechanically coupled to the I-beam 764 via a transmission 756 .
- the transmission 756 may include one or more gears or other linkage components to couple the motor 754 to the I-beam 764 .
- a position sensor 784 may sense a position of the I-beam 764 .
- the position sensor 784 may be or include any type of sensor that is capable of generating position data that indicate a position of the I-beam 764 .
- the position sensor 784 may include an encoder configured to provide a series of pulses to the control circuit 760 as the I-beam 764 translates distally and proximally.
- the control circuit 760 may track the pulses to determine the position of the I-beam 764 .
- Other suitable position sensors may be used, including, for example, a proximity sensor. Other types of position sensors may provide other signals indicating motion of the I-beam 764 .
- the position sensor 784 may be omitted. Where the motor 754 is a stepper motor, the control circuit 760 may track the position of the I-beam 764 by aggregating the number and direction of steps that the motor has been instructed to execute.
- the position sensor 784 may be located in the end effector 792 or at any other portion of the instrument.
- the control circuit 760 may be in communication with one or more sensors 788 .
- the sensors 788 may be positioned on the end effector 792 and adapted to operate with the surgical instrument 790 to measure the various derived parameters such as gap distance versus time, tissue compression versus time, and anvil strain versus time.
- the sensors 788 may comprise a magnetic sensor, a magnetic field sensor, a strain gauge, a pressure sensor, a force sensor, an inductive sensor such as an eddy current sensor, a resistive sensor, a capacitive sensor, an optical sensor, and/or any other suitable sensor for measuring one or more parameters of the end effector 792 .
- the sensors 788 may include one or more sensors.
- the one or more sensors 788 may comprise a strain gauge, such as a micro-strain gauge, configured to measure the magnitude of the strain in the anvil 766 during a clamped condition.
- the strain gauge provides an electrical signal whose amplitude varies with the magnitude of the strain.
- the sensors 788 may comprise a pressure sensor configured to detect a pressure generated by the presence of compressed tissue between the anvil 766 and the staple cartridge 768 .
- the sensors 788 may be configured to detect impedance of a tissue section located between the anvil 766 and the staple cartridge 768 that is indicative of the thickness and/or fullness of tissue located therebetween.
- the sensors 788 may be is configured to measure forces exerted on the anvil 766 by the closure drive system.
- one or more sensors 788 can be at an interaction point between a closure tube and the anvil 766 to detect the closure forces applied by a closure tube to the anvil 766 .
- the forces exerted on the anvil 766 can be representative of the tissue compression experienced by the tissue section captured between the anvil 766 and the staple cartridge 768 .
- the one or more sensors 788 can be positioned at various interaction points along the closure drive system to detect the closure forces applied to the anvil 766 by the closure drive system.
- the one or more sensors 788 may be sampled in real time during a clamping operation by a processor portion of the control circuit 760 .
- the control circuit 760 receives real-time sample measurements to provide and analyze time-based information and assess, in real time, closure forces applied to the anvil 766 .
- a current sensor 786 can be employed to measure the current drawn by the motor 754 .
- the force required to advance the I-beam 764 corresponds to the current drawn by the motor 754 .
- the force is converted to a digital signal and provided to the control circuit 760 .
- An RF energy source 794 is coupled to the end effector 792 and is applied to the RF cartridge 796 when the RF cartridge 796 is loaded in the end effector 792 in place of the staple cartridge 768 .
- the control circuit 760 controls the delivery of the RF energy to the RF cartridge 796 .
- FIG. 20 is a simplified block diagram of a generator 800 configured to provide inductorless tuning, among other benefits. Additional details of the generator 800 are described in U.S. Pat. No. 9,060,775, titled SURGICAL GENERATOR FOR ULTRASONIC AND ELECTROSURGICAL DEVICES, which issued on Jun. 23, 2015, which is herein incorporated by reference in its entirety.
- the generator 800 may comprise a patient isolated stage 802 in communication with a non-isolated stage 804 via a power transformer 806 .
- a secondary winding 808 of the power transformer 806 is contained in the isolated stage 802 and may comprise a tapped configuration (e.g., a center-tapped or a non-center-tapped configuration) to define drive signal outputs 810 a , 810 b , 810 c for delivering drive signals to different surgical instruments, such as, for example, an ultrasonic surgical instrument, an RF electrosurgical instrument, and a multifunction surgical instrument which includes ultrasonic and RF energy modes that can be delivered alone or simultaneously.
- a tapped configuration e.g., a center-tapped or a non-center-tapped configuration
- drive signal outputs 810 a , 810 c may output an ultrasonic drive signal (e.g., a 420V root-mean-square (RMS) drive signal) to an ultrasonic surgical instrument
- drive signal outputs 810 b , 810 c may output an RF electrosurgical drive signal (e.g., a 100V RMS drive signal) to an RF electrosurgical instrument, with the drive signal output 810 b corresponding to the center tap of the power transformer 806 .
- an ultrasonic drive signal e.g., a 420V root-mean-square (RMS) drive signal
- RMS root-mean-square
- the ultrasonic and electrosurgical drive signals may be provided simultaneously to distinct surgical instruments and/or to a single surgical instrument, such as the multifunction surgical instrument, having the capability to deliver both ultrasonic and electrosurgical energy to tissue.
- the electrosurgical signal provided either to a dedicated electrosurgical instrument and/or to a combined multifunction ultrasonic/electrosurgical instrument may be either a therapeutic or sub-therapeutic level signal where the sub-therapeutic signal can be used, for example, to monitor tissue or instrument conditions and provide feedback to the generator.
- the ultrasonic and RF signals can be delivered separately or simultaneously from a generator with a single output port in order to provide the desired output signal to the surgical instrument, as will be discussed in more detail below.
- the generator can combine the ultrasonic and electrosurgical RF energies and deliver the combined energies to the multifunction ultrasonic/electrosurgical instrument.
- Bipolar electrodes can be placed on one or both jaws of the end effector. One jaw may be driven by ultrasonic energy in addition to electrosurgical RF energy, working simultaneously.
- the ultrasonic energy may be employed to dissect tissue, while the electrosurgical RF energy may be employed for vessel sealing.
- the non-isolated stage 804 may comprise a power amplifier 812 having an output connected to a primary winding 814 of the power transformer 806 .
- the power amplifier 812 may comprise a push-pull amplifier.
- the non-isolated stage 804 may further comprise a logic device 816 for supplying a digital output to a digital-to-analog converter (DAC) circuit 818 , which in turn supplies a corresponding analog signal to an input of the power amplifier 812 .
- the logic device 816 may comprise a programmable gate array (PGA), a FPGA, programmable logic device (PLD), among other logic circuits, for example.
- the logic device 816 by virtue of controlling the input of the power amplifier 812 via the DAC circuit 818 , may therefore control any of a number of parameters (e.g., frequency, waveform shape, waveform amplitude) of drive signals appearing at the drive signal outputs 810 a , 810 b , 810 c .
- the logic device 816 in conjunction with a processor (e.g., a DSP discussed below), may implement a number of DSP-based and/or other control algorithms to control parameters of the drive signals output by the generator 800 .
- Power may be supplied to a power rail of the power amplifier 812 by a switch-mode regulator 820 , e.g., a power converter.
- the switch-mode regulator 820 may comprise an adjustable buck regulator, for example.
- the non-isolated stage 804 may further comprise a first processor 822 , which in one form may comprise a DSP processor such as an Analog Devices ADSP-21469 SHARC DSP, available from Analog Devices, Norwood, MA, for example, although in various forms any suitable processor may be employed.
- the DSP processor 822 may control the operation of the switch-mode regulator 820 responsive to voltage feedback data received from the power amplifier 812 by the DSP processor 822 via an ADC circuit 824 .
- the DSP processor 822 may receive as input, via the ADC circuit 824 , the waveform envelope of a signal (e.g., an RF signal) being amplified by the power amplifier 812 .
- the DSP processor 822 may then control the switch-mode regulator 820 (e.g., via a PWM output) such that the rail voltage supplied to the power amplifier 812 tracks the waveform envelope of the amplified signal.
- the switch-mode regulator 820 e.g., via a PWM output
- the efficiency of the power amplifier 812 may be significantly improved relative to a fixed rail voltage amplifier schemes.
- the logic device 816 in conjunction with the DSP processor 822 , may implement a digital synthesis circuit such as a direct digital synthesizer control scheme to control the waveform shape, frequency, and/or amplitude of drive signals output by the generator 800 .
- the logic device 816 may implement a DDS control algorithm by recalling waveform samples stored in a dynamically updated lookup table (LUT), such as a RAM LUT, which may be embedded in an FPGA.
- LUT dynamically updated lookup table
- This control algorithm is particularly useful for ultrasonic applications in which an ultrasonic transducer, such as an ultrasonic transducer, may be driven by a clean sinusoidal current at its resonant frequency.
- minimizing or reducing the total distortion of the motional branch current may correspondingly minimize or reduce undesirable resonance effects.
- voltage and current feedback data based on the drive signal may be input into an algorithm, such as an error control algorithm implemented by the DSP processor 822 , which compensates for distortion by suitably pre-distorting or modifying the waveform samples stored in the LUT on a dynamic, ongoing basis (e.g., in real time).
- the amount or degree of pre-distortion applied to the LUT samples may be based on the error between a computed motional branch current and a desired current waveform shape, with the error being determined on a sample-by-sample basis.
- the pre-distorted LUT samples when processed through the drive circuit, may result in a motional branch drive signal having the desired waveform shape (e.g., sinusoidal) for optimally driving the ultrasonic transducer.
- the LUT waveform samples will therefore not represent the desired waveform shape of the drive signal, but rather the waveform shape that is required to ultimately produce the desired waveform shape of the motional branch drive signal when distortion effects are taken into account.
- the non-isolated stage 804 may further comprise a first ADC circuit 826 and a second ADC circuit 828 coupled to the output of the power transformer 806 via respective isolation transformers 830 , 832 for respectively sampling the voltage and current of drive signals output by the generator 800 .
- the ADC circuits 826 , 828 may be configured to sample at high speeds (e.g., 80 mega samples per second (MSPS)) to enable oversampling of the drive signals.
- MSPS mega samples per second
- the sampling speed of the ADC circuits 826 , 828 may enable approximately 200 ⁇ (depending on frequency) oversampling of the drive signals.
- the sampling operations of the ADC circuit 826 , 828 may be performed by a single ADC circuit receiving input voltage and current signals via a two-way multiplexer.
- the use of high-speed sampling in forms of the generator 800 may enable, among other things, calculation of the complex current flowing through the motional branch (which may be used in certain forms to implement DDS-based waveform shape control described above), accurate digital filtering of the sampled signals, and calculation of real power consumption with a high degree of precision.
- Voltage and current feedback data output by the ADC circuits 826 , 828 may be received and processed (e.g., first-in-first-out (FIFO) buffer, multiplexer) by the logic device 816 and stored in data memory for subsequent retrieval by, for example, the DSP processor 822 .
- voltage and current feedback data may be used as input to an algorithm for pre-distorting or modifying LUT waveform samples on a dynamic and ongoing basis. In certain forms, this may require each stored voltage and current feedback data pair to be indexed based on, or otherwise associated with, a corresponding LUT sample that was output by the logic device 816 when the voltage and current feedback data pair was acquired. Synchronization of the LUT samples and the voltage and current feedback data in this manner contributes to the correct timing and stability of the pre-distortion algorithm.
- the voltage and current feedback data may be used to control the frequency and/or amplitude (e.g., current amplitude) of the drive signals.
- voltage and current feedback data may be used to determine impedance phase.
- the frequency of the drive signal may then be controlled to minimize or reduce the difference between the determined impedance phase and an impedance phase setpoint (e.g., 0°), thereby minimizing or reducing the effects of harmonic distortion and correspondingly enhancing impedance phase measurement accuracy.
- the determination of phase impedance and a frequency control signal may be implemented in the DSP processor 822 , for example, with the frequency control signal being supplied as input to a DDS control algorithm implemented by the logic device 816 .
- the current feedback data may be monitored in order to maintain the current amplitude of the drive signal at a current amplitude setpoint.
- the current amplitude setpoint may be specified directly or determined indirectly based on specified voltage amplitude and power setpoints.
- control of the current amplitude may be implemented by control algorithm, such as, for example, a proportional-integral-derivative (PID) control algorithm, in the DSP processor 822 .
- PID proportional-integral-derivative
- Variables controlled by the control algorithm to suitably control the current amplitude of the drive signal may include, for example, the scaling of the LUT waveform samples stored in the logic device 816 and/or the full-scale output voltage of the DAC circuit 818 (which supplies the input to the power amplifier 812 ) via a DAC circuit 834 .
- the non-isolated stage 804 may further comprise a second processor 836 for providing, among other things user interface (UI) functionality.
- the UI processor 836 may comprise an Atmel AT91SAM9263 processor having an ARM 926EJ-S core, available from Atmel Corporation, San Jose, Calif., for example.
- Examples of UI functionality supported by the UI processor 836 may include audible and visual user feedback, communication with peripheral devices (e.g., via a USB interface), communication with a foot switch, communication with an input device (e.g., a touch screen display) and communication with an output device (e.g., a speaker).
- the UI processor 836 may communicate with the DSP processor 822 and the logic device 816 (e.g., via SPI buses).
- the UI processor 836 may primarily support UI functionality, it may also coordinate with the DSP processor 822 to implement hazard mitigation in certain forms.
- the UI processor 836 may be programmed to monitor various aspects of user input and/or other inputs (e.g., touch screen inputs, foot switch inputs, temperature sensor inputs) and may disable the drive output of the generator 800 when an erroneous condition is detected.
- both the DSP processor 822 and the UI processor 836 may determine and monitor the operating state of the generator 800 .
- the operating state of the generator 800 may dictate, for example, which control and/or diagnostic processes are implemented by the DSP processor 822 .
- the UI processor 836 the operating state of the generator 800 may dictate, for example, which elements of a UI (e.g., display screens, sounds) are presented to a user.
- the respective DSP and UI processors 822 , 836 may independently maintain the current operating state of the generator 800 and recognize and evaluate possible transitions out of the current operating state.
- the DSP processor 822 may function as the master in this relationship and determine when transitions between operating states are to occur.
- the UI processor 836 may be aware of valid transitions between operating states and may confirm if a particular transition is appropriate. For example, when the DSP processor 822 instructs the UI processor 836 to transition to a specific state, the UI processor 836 may verify that requested transition is valid. In the event that a requested transition between states is determined to be invalid by the UI processor 836 , the UI processor 836 may cause the generator 800 to enter a failure mode.
- the non-isolated stage 804 may further comprise a controller 838 for monitoring input devices (e.g., a capacitive touch sensor used for turning the generator 800 on and off, a capacitive touch screen).
- the controller 838 may comprise at least one processor and/or other controller device in communication with the UI processor 836 .
- the controller 838 may comprise a processor (e.g., a Meg168 8-bit controller available from Atmel) configured to monitor user input provided via one or more capacitive touch sensors.
- the controller 838 may comprise a touch screen controller (e.g., a QT5480 touch screen controller available from Atmel) to control and manage the acquisition of touch data from a capacitive touch screen.
- the controller 838 may continue to receive operating power (e.g., via a line from a power supply of the generator 800 , such as the power supply 854 discussed below). In this way, the controller 838 may continue to monitor an input device (e.g., a capacitive touch sensor located on a front panel of the generator 800 ) for turning the generator 800 on and off.
- an input device e.g., a capacitive touch sensor located on a front panel of the generator 800
- the controller 838 may wake the power supply (e.g., enable operation of one or more DC/DC voltage converters 856 of the power supply 854 ) if activation of the “on/off” input device by a user is detected.
- the controller 838 may therefore initiate a sequence for transitioning the generator 800 to a “power on” state. Conversely, the controller 838 may initiate a sequence for transitioning the generator 800 to the power off state if activation of the “on/off” input device is detected when the generator 800 is in the power on state. In certain forms, for example, the controller 838 may report activation of the “on/off” input device to the UI processor 836 , which in turn implements the necessary process sequence for transitioning the generator 800 to the power off state. In such forms, the controller 838 may have no independent ability for causing the removal of power from the generator 800 after its power on state has been established.
- the controller 838 may cause the generator 800 to provide audible or other sensory feedback for alerting the user that a power on or power off sequence has been initiated. Such an alert may be provided at the beginning of a power on or power off sequence and prior to the commencement of other processes associated with the sequence.
- the isolated stage 802 may comprise an instrument interface circuit 840 to, for example, provide a communication interface between a control circuit of a surgical instrument (e.g., a control circuit comprising handpiece switches) and components of the non-isolated stage 804 , such as, for example, the logic device 816 , the DSP processor 822 , and/or the UI processor 836 .
- the instrument interface circuit 840 may exchange information with components of the non-isolated stage 804 via a communication link that maintains a suitable degree of electrical isolation between the isolated and non-isolated stages 802 , 804 , such as, for example, an IR-based communication link.
- Power may be supplied to the instrument interface circuit 840 using, for example, a low-dropout voltage regulator powered by an isolation transformer driven from the non-isolated stage 804 .
- the instrument interface circuit 840 may comprise a logic circuit 842 (e.g., logic circuit, programmable logic circuit, PGA, FPGA, PLD) in communication with a signal conditioning circuit 844 .
- the signal conditioning circuit 844 may be configured to receive a periodic signal from the logic circuit 842 (e.g., a 2 kHz square wave) to generate a bipolar interrogation signal having an identical frequency.
- the interrogation signal may be generated, for example, using a bipolar current source fed by a differential amplifier.
- the interrogation signal may be communicated to a surgical instrument control circuit (e.g., by using a conductive pair in a cable that connects the generator 800 to the surgical instrument) and monitored to determine a state or configuration of the control circuit.
- the control circuit may comprise a number of switches, resistors, and/or diodes to modify one or more characteristics (e.g., amplitude, rectification) of the interrogation signal such that a state or configuration of the control circuit is uniquely discernable based on the one or more characteristics.
- the signal conditioning circuit 844 may comprise an ADC circuit for generating samples of a voltage signal appearing across inputs of the control circuit resulting from passage of interrogation signal therethrough.
- the logic circuit 842 (or a component of the non-isolated stage 804 ) may then determine the state or configuration of the control circuit based on the ADC circuit samples.
- the instrument interface circuit 840 may comprise a first data circuit interface 846 to enable information exchange between the logic circuit 842 (or other element of the instrument interface circuit 840 ) and a first data circuit disposed in or otherwise associated with a surgical instrument.
- a first data circuit may be disposed in a cable integrally attached to a surgical instrument handpiece or in an adaptor for interfacing a specific surgical instrument type or model with the generator 800 .
- the first data circuit may be implemented in any suitable manner and may communicate with the generator according to any suitable protocol, including, for example, as described herein with respect to the first data circuit.
- the first data circuit may comprise a non-volatile storage device, such as an EEPROM device.
- the first data circuit interface 846 may be implemented separately from the logic circuit 842 and comprise suitable circuitry (e.g., discrete logic devices, a processor) to enable communication between the logic circuit 842 and the first data circuit. In other forms, the first data circuit interface 846 may be integral with the logic circuit 842 .
- the first data circuit may store information pertaining to the particular surgical instrument with which it is associated. Such information may include, for example, a model number, a serial number, a number of operations in which the surgical instrument has been used, and/or any other type of information. This information may be read by the instrument interface circuit 840 (e.g., by the logic circuit 842 ), transferred to a component of the non-isolated stage 804 (e.g., to logic device 816 , DSP processor 822 , and/or UI processor 836 ) for presentation to a user via an output device and/or for controlling a function or operation of the generator 800 .
- a component of the non-isolated stage 804 e.g., to logic device 816 , DSP processor 822 , and/or UI processor 836
- any type of information may be communicated to the first data circuit for storage therein via the first data circuit interface 846 (e.g., using the logic circuit 842 ).
- Such information may comprise, for example, an updated number of operations in which the surgical instrument has been used and/or dates and/or times of its usage.
- a surgical instrument may be detachable from a handpiece (e.g., the multifunction surgical instrument may be detachable from the handpiece) to promote instrument interchangeability and/or disposability.
- conventional generators may be limited in their ability to recognize particular instrument configurations being used and to optimize control and diagnostic processes accordingly.
- the addition of readable data circuits to surgical instruments to address this issue is problematic from a compatibility standpoint, however. For example, designing a surgical instrument to remain backwardly compatible with generators that lack the requisite data reading functionality may be impractical due to, for example, differing signal schemes, design complexity, and cost.
- Forms of instruments discussed herein address these concerns by using data circuits that may be implemented in existing surgical instruments economically and with minimal design changes to preserve compatibility of the surgical instruments with current generator platforms.
- forms of the generator 800 may enable communication with instrument-based data circuits.
- the generator 800 may be configured to communicate with a second data circuit contained in an instrument (e.g., the multifunction surgical instrument).
- the second data circuit may be implemented in a many similar to that of the first data circuit described herein.
- the instrument interface circuit 840 may comprise a second data circuit interface 848 to enable this communication.
- the second data circuit interface 848 may comprise a tri-state digital interface, although other interfaces may also be used.
- the second data circuit may generally be any circuit for transmitting and/or receiving data.
- the second data circuit may store information pertaining to the particular surgical instrument with which it is associated. Such information may include, for example, a model number, a serial number, a number of operations in which the surgical instrument has been used, and/or any other type of information.
- the second data circuit may store information about the electrical and/or ultrasonic properties of an associated ultrasonic transducer, end effector, or ultrasonic drive system.
- the first data circuit may indicate a burn-in frequency slope, as described herein.
- any type of information may be communicated to second data circuit for storage therein via the second data circuit interface 848 (e.g., using the logic circuit 842 ). Such information may comprise, for example, an updated number of operations in which the instrument has been used and/or dates and/or times of its usage.
- the second data circuit may transmit data acquired by one or more sensors (e.g., an instrument-based temperature sensor).
- the second data circuit may receive data from the generator 800 and provide an indication to a user (e.g., a light emitting diode indication or other visible indication) based on the received data.
- the second data circuit and the second data circuit interface 848 may be configured such that communication between the logic circuit 842 and the second data circuit can be effected without the need to provide additional conductors for this purpose (e.g., dedicated conductors of a cable connecting a handpiece to the generator 800 ).
- information may be communicated to and from the second data circuit using a one-wire bus communication scheme implemented on existing cabling, such as one of the conductors used transmit interrogation signals from the signal conditioning circuit 844 to a control circuit in a handpiece. In this way, design changes or modifications to the surgical instrument that might otherwise be necessary are minimized or reduced.
- the presence of a second data circuit may be “invisible” to generators that do not have the requisite data reading functionality, thus enabling backward compatibility of the surgical instrument.
- the isolated stage 802 may comprise at least one blocking capacitor 850 - 1 connected to the drive signal output 810 b to prevent passage of DC current to a patient.
- a single blocking capacitor may be required to comply with medical regulations or standards, for example. While failure in single-capacitor designs is relatively uncommon, such failure may nonetheless have negative consequences.
- a second blocking capacitor 850 - 2 may be provided in series with the blocking capacitor 850 - 1 , with current leakage from a point between the blocking capacitors 850 - 1 , 850 - 2 being monitored by, for example, an ADC circuit 852 for sampling a voltage induced by leakage current. The samples may be received by the logic circuit 842 , for example.
- the generator 800 may determine when at least one of the blocking capacitors 850 - 1 , 850 - 2 has failed, thus providing a benefit over single-capacitor designs having a single point of failure.
- the non-isolated stage 804 may comprise a power supply 854 for delivering DC power at a suitable voltage and current.
- the power supply may comprise, for example, a 400 W power supply for delivering a 48 VDC system voltage.
- the power supply 854 may further comprise one or more DC/DC voltage converters 856 for receiving the output of the power supply to generate DC outputs at the voltages and currents required by the various components of the generator 800 .
- one or more of the DC/DC voltage converters 856 may receive an input from the controller 838 when activation of the “on/off” input device by a user is detected by the controller 838 to enable operation of, or wake, the DC/DC voltage converters 856 .
- FIG. 21 illustrates an example of a generator 900 , which is one form of the generator 800 ( FIG. 20 ).
- the generator 900 is configured to deliver multiple energy modalities to a surgical instrument.
- the generator 900 provides RF and ultrasonic signals for delivering energy to a surgical instrument either independently or simultaneously.
- the RF and ultrasonic signals may be provided alone or in combination and may be provided simultaneously.
- at least one generator output can deliver multiple energy modalities (e.g., ultrasonic, bipolar or monopolar RF, irreversible and/or reversible electroporation, and/or microwave energy, among others) through a single port, and these signals can be delivered separately or simultaneously to the end effector to treat tissue.
- the generator 900 comprises a processor 902 coupled to a waveform generator 904 .
- the processor 902 and waveform generator 904 are configured to generate a variety of signal waveforms based on information stored in a memory coupled to the processor 902 , not shown for clarity of disclosure.
- the digital information associated with a waveform is provided to the waveform generator 904 which includes one or more DAC circuits to convert the digital input into an analog output.
- the analog output is fed to an amplifier 1106 for signal conditioning and amplification.
- the conditioned and amplified output of the amplifier 906 is coupled to a power transformer 908 .
- the signals are coupled across the power transformer 908 to the secondary side, which is in the patient isolation side.
- a first signal of a first energy modality is provided to the surgical instrument between the terminals labeled ENERGY 1 and RETURN.
- a second signal of a second energy modality is coupled across a capacitor 910 and is provided to the surgical instrument between the terminals labeled ENERGY 2 and RETURN.
- n is a positive integer greater than 1 .
- up to “n” return paths RETURNn may be provided without departing from the scope of the present disclosure.
- a first voltage sensing circuit 912 is coupled across the terminals labeled ENERGY 1 and the RETURN path to measure the output voltage therebetween.
- a second voltage sensing circuit 924 is coupled across the terminals labeled ENERGY 2 and the RETURN path to measure the output voltage therebetween.
- a current sensing circuit 914 is disposed in series with the RETURN leg of the secondary side of the power transformer 908 as shown to measure the output current for either energy modality. If different return paths are provided for each energy modality, then a separate current sensing circuit should be provided in each return leg.
- the outputs of the first and second voltage sensing circuits 912 , 924 are provided to respective isolation transformers 916 , 922 and the output of the current sensing circuit 914 is provided to another isolation transformer 918 .
- the outputs of the isolation transformers 916 , 928 , 922 in the on the primary side of the power transformer 908 (non-patient isolated side) are provided to a one or more ADC circuit 926 .
- the digitized output of the ADC circuit 926 is provided to the processor 902 for further processing and computation.
- the output voltages and output current feedback information can be employed to adjust the output voltage and current provided to the surgical instrument and to compute output impedance, among other parameters.
- Input/output communications between the processor 902 and patient isolated circuits is provided through an interface circuit 920 . Sensors also may be in electrical communication with the processor 902 by way of the interface circuit 920 .
- the impedance may be determined by the processor 902 by dividing the output of either the first voltage sensing circuit 912 coupled across the terminals labeled ENERGY 1 /RETURN or the second voltage sensing circuit 924 coupled across the terminals labeled ENERGY 2 /RETURN by the output of the current sensing circuit 914 disposed in series with the RETURN leg of the secondary side of the power transformer 908 .
- the outputs of the first and second voltage sensing circuits 912 , 924 are provided to separate isolations transformers 916 , 922 and the output of the current sensing circuit 914 is provided to another isolation transformer 916 .
- the digitized voltage and current sensing measurements from the ADC circuit 926 are provided the processor 902 for computing impedance.
- the first energy modality ENERGY 1 may be ultrasonic energy and the second energy modality ENERGY 2 may be RF energy.
- other energy modalities include irreversible and/or reversible electroporation and/or microwave energy, among others.
- FIG. 21 shows a single return path RETURN may be provided for two or more energy modalities, in other aspects, multiple return paths RETURNn may be provided for each energy modality ENERGYn.
- the ultrasonic transducer impedance may be measured by dividing the output of the first voltage sensing circuit 912 by the current sensing circuit 914 and the tissue impedance may be measured by dividing the output of the second voltage sensing circuit 924 by the current sensing circuit 914 .
- the generator 900 comprising at least one output port can include a power transformer 908 with a single output and with multiple taps to provide power in the form of one or more energy modalities, such as ultrasonic, bipolar or monopolar RF, irreversible and/or reversible electroporation, and/or microwave energy, among others, for example, to the end effector depending on the type of treatment of tissue being performed.
- the generator 900 can deliver energy with higher voltage and lower current to drive an ultrasonic transducer, with lower voltage and higher current to drive RF electrodes for sealing tissue, or with a coagulation waveform for spot coagulation using either monopolar or bipolar RF electrosurgical electrodes.
- the output waveform from the generator 900 can be steered, switched, or filtered to provide the frequency to the end effector of the surgical instrument.
- the connection of an ultrasonic transducer to the generator 900 output would be preferably located between the output labeled ENERGY 1 and RETURN as shown in FIG. 21 .
- a connection of RF bipolar electrodes to the generator 900 output would be preferably located between the output labeled ENERGY 2 and RETURN.
- the preferred connections would be active electrode (e.g., pencil or other probe) to the ENERGY 2 output and a suitable return pad connected to the RETURN output.
- wireless and its derivatives may be used to describe circuits, devices, systems, methods, techniques, communications channels, etc., that may communicate data through the use of modulated electromagnetic radiation through a non-solid medium. The term does not imply that the associated devices do not contain any wires, although in some aspects they might not.
- the communication module may implement any of a number of wireless or wired communication standards or protocols, including but not limited to Wi-Fi (IEEE 802.11 family), WiMAX (IEEE 802.16 family), IEEE 802.20, long term evolution (LTE), Ev-DO, HSPA+, HSDPA+, HSUPA+, EDGE, GSM, GPRS, CDMA, TDMA, DECT, Bluetooth, Ethernet derivatives thereof, as well as any other wireless and wired protocols that are designated as 3G, 4G, 5G, and beyond.
- the computing module may include a plurality of communication modules.
- a first communication module may be dedicated to shorter range wireless communications such as Wi-Fi and Bluetooth and a second communication module may be dedicated to longer range wireless communications such as GPS, EDGE, GPRS, CDMA, WiMAX, LTE, Ev-DO, and others.
- processor or processing unit is an electronic circuit which performs operations on some external data source, usually memory or some other data stream.
- the term is used herein to refer to the central processor (central processing unit) in a system or computer systems (especially systems on a chip (SoCs)) that combine a number of specialized “processors.”
- SoC system on a chip or system on chip
- SOC system on chip
- IC integrated circuit
- a SoC integrates a microcontroller (or microprocessor) with advanced peripherals like graphics processing unit (GPU), Wi-Fi module, or coprocessor.
- a SoC may or may not contain built-in memory.
- a microcontroller or controller is a system that integrates a microprocessor with peripheral circuits and memory.
- a microcontroller (or MCU for microcontroller unit) may be implemented as a small computer on a single integrated circuit. It may be similar to a SoC; an SoC may include a microcontroller as one of its components.
- a microcontroller may contain one or more core processing units (CPUs) along with memory and programmable input/output peripherals. Program memory in the form of Ferroelectric RAM, NOR flash or OTP ROM is also often included on chip, as well as a small amount of RAM.
- Microcontrollers may be employed for embedded applications, in contrast to the microprocessors used in personal computers or other general purpose applications consisting of various discrete chips.
- controller or microcontroller may be a stand-alone IC or chip device that interfaces with a peripheral device. This may be a link between two parts of a computer or a controller on an external device that manages the operation of (and connection with) that device.
- processors or microcontrollers described herein may be implemented by any single core or multicore processor such as those known under the trade name ARM Cortex by Texas Instruments.
- the processor may be an LM4F230H5QR ARM Cortex-M4F Processor Core, available from Texas Instruments, for example, comprising on-chip memory of 256 KB single-cycle flash memory, or other non-volatile memory, up to 40 MHz, a prefetch buffer to improve performance above 40 MHz, a 32 KB single-cycle serial random access memory (SRAM), internal read-only memory (ROM) loaded with StellarisWare® software, 2 KB electrically erasable programmable read-only memory (EEPROM), one or more pulse width modulation (PWM) modules, one or more quadrature encoder inputs (QEI) analog, one or more 12-bit Analog-to-Digital Converters (ADC) with 12 analog input channels, details of which are available for the product datasheet.
- the processor may comprise a safety controller comprising two controller-based families such as TMS570 and RM4x known under the trade name Hercules ARM Cortex R4, also by Texas Instruments.
- the safety controller may be configured specifically for IEC 61508 and ISO 26262 safety critical applications, among others, to provide advanced integrated safety features while delivering scalable performance, connectivity, and memory options.
- Modular devices include the modules (as described in connection with FIGS. 3 and 9 , for example) that are receivable within a surgical hub and the surgical devices or instruments that can be connected to the various modules in order to connect or pair with the corresponding surgical hub.
- the modular devices include, for example, intelligent surgical instruments, medical imaging devices, suction/irrigation devices, smoke evacuators, energy generators, ventilators, insufflators, and displays.
- the modular devices described herein can be controlled by control algorithms. The control algorithms can be executed on the modular device itself, on the surgical hub to which the particular modular device is paired, or on both the modular device and the surgical hub (e.g., via a distributed computing architecture).
- the modular devices' control algorithms control the devices based on data sensed by the modular device itself (i.e., by sensors in, on, or connected to the modular device). This data can be related to the patient being operated on (e.g., tissue properties or insufflation pressure) or the modular device itself (e.g., the rate at which a knife is being advanced, motor current, or energy levels).
- a control algorithm for a surgical stapling and cutting instrument can control the rate at which the instrument's motor drives its knife through tissue according to resistance encountered by the knife as it advances.
- Situational awareness is the ability of some aspects of a surgical system to determine or infer information related to a surgical procedure from data received from databases and/or instruments.
- the information can include the type of procedure being undertaken, the type of tissue being operated on, or the body cavity that is the subject of the procedure.
- the surgical system can, for example, improve the manner in which it controls the modular devices (e.g. a robotic arm and/or robotic surgical tool) that are connected to it and provide contextualized information or suggestions to the surgeon during the course of the surgical procedure.
- a timeline 5200 depicting situational awareness of a hub such as the surgical hub 106 or 206 , for example.
- the timeline 5200 is an illustrative surgical procedure and the contextual information that the surgical hub 106 , 206 can derive from the data received from the data sources at each step in the surgical procedure.
- the timeline 5200 depicts the typical steps that would be taken by the nurses, surgeons, and other medical personnel during the course of a lung segmentectomy procedure, beginning with setting up the operating theater and ending with transferring the patient to a post-operative recovery room.
- the situationally aware surgical hub 106 , 206 receives data from the data sources throughout the course of the surgical procedure, including data generated each time medical personnel utilize a modular device that is paired with the surgical hub 106 , 206 .
- the surgical hub 106 , 206 can receive this data from the paired modular devices and other data sources and continually derive inferences (i.e., contextual information) about the ongoing procedure as new data is received, such as which step of the procedure is being performed at any given time.
- the situational awareness system of the surgical hub 106 , 206 is able to, for example, record data pertaining to the procedure for generating reports, verify the steps being taken by the medical personnel, provide data or prompts (e.g., via a display screen) that may be pertinent for the particular procedural step, adjust modular devices based on the context (e.g., activate monitors, adjust the field of view (FOV) of the medical imaging device, or change the energy level of an ultrasonic surgical instrument or RF electrosurgical instrument), and take any other such action described above.
- record data pertaining to the procedure for generating reports verify the steps being taken by the medical personnel, provide data or prompts (e.g., via a display screen) that may be pertinent for the particular procedural step, adjust modular devices based on the context (e.g., activate monitors, adjust the field of view (FOV) of the medical imaging device, or change the energy level of an ultrasonic surgical instrument or RF electrosurgical instrument), and take any other such action described above.
- FOV field of view
- the hospital staff members retrieve the patient's Electronic Medical Record (EMR) from the hospital's EMR database. Based on select patient data in the EMR, the surgical hub 106 , 206 determines that the procedure to be performed is a thoracic procedure.
- EMR Electronic Medical Record
- Second step 5204 the staff members scan the incoming medical supplies for the procedure.
- the surgical hub 106 , 206 cross-references the scanned supplies with a list of supplies that are utilized in various types of procedures and confirms that the mix of supplies corresponds to a thoracic procedure. Further, the surgical hub 106 , 206 is also able to determine that the procedure is not a wedge procedure (because the incoming supplies either lack certain supplies that are necessary for a thoracic wedge procedure or do not otherwise correspond to a thoracic wedge procedure).
- Third step 5206 the medical personnel scan the patient band via a scanner that is communicably connected to the surgical hub 106 , 206 .
- the surgical hub 106 , 206 can then confirm the patient's identity based on the scanned data.
- the medical staff turns on the auxiliary equipment.
- the auxiliary equipment being utilized can vary according to the type of surgical procedure and the techniques to be used by the surgeon, but in this illustrative case they include a smoke evacuator, insufflator, and medical imaging device.
- the auxiliary equipment that are modular devices can automatically pair with the surgical hub 106 , 206 that is located within a particular vicinity of the modular devices as part of their initialization process.
- the surgical hub 106 , 206 can then derive contextual information about the surgical procedure by detecting the types of modular devices that pair with it during this pre-operative or initialization phase.
- the surgical hub 106 , 206 determines that the surgical procedure is a VATS procedure based on this particular combination of paired modular devices. Based on the combination of the data from the patient's EMR, the list of medical supplies to be used in the procedure, and the type of modular devices that connect to the hub, the surgical hub 106 , 206 can generally infer the specific procedure that the surgical team will be performing. Once the surgical hub 106 , 206 knows what specific procedure is being performed, the surgical hub 106 , 206 can then retrieve the steps of that procedure from a memory or from the cloud and then cross-reference the data it subsequently receives from the connected data sources (e.g., modular devices and patient monitoring devices) to infer what step of the surgical procedure the surgical team is performing.
- the connected data sources e.g., modular devices and patient monitoring devices
- the staff members attach the EKG electrodes and other patient monitoring devices to the patient.
- the EKG electrodes and other patient monitoring devices are able to pair with the surgical hub 106 , 206 .
- the surgical hub 106 , 206 begins receiving data from the patient monitoring devices, the surgical hub 106 , 206 thus confirms that the patient is in the operating theater.
- the surgical hub 106 , 206 can infer that the patient is under anesthesia based on data from the modular devices and/or patient monitoring devices, including EKG data, blood pressure data, ventilator data, or combinations thereof, for example.
- the pre-operative portion of the lung segmentectomy procedure is completed and the operative portion begins.
- the patient's lung that is being operated on is collapsed (while ventilation is switched to the contralateral lung).
- the surgical hub 106 , 206 can infer from the ventilator data that the patient's lung has been collapsed, for example.
- the surgical hub 106 , 206 can infer that the operative portion of the procedure has commenced as it can compare the detection of the patient's lung collapsing to the expected steps of the procedure (which can be accessed or retrieved previously) and thereby determine that collapsing the lung is the first operative step in this particular procedure.
- the medical imaging device e.g., a scope
- receives the medical imaging device data i.e., video or image data
- the surgical hub 106 , 206 can determine that the laparoscopic portion of the surgical procedure has commenced. Further, the surgical hub 106 , 206 can determine that the particular procedure being performed is a segmentectomy, as opposed to a lobectomy (note that a wedge procedure has already been discounted by the surgical hub 106 , 206 based on data received at the second step 5204 of the procedure).
- the data from the medical imaging device 124 FIG.
- the medical imaging device 2 can be utilized to determine contextual information regarding the type of procedure being performed in a number of different ways, including by determining the angle at which the medical imaging device is oriented with respect to the visualization of the patient's anatomy, monitoring the number or medical imaging devices being utilized (i.e., that are activated and paired with the surgical hub 106 , 206 ), and monitoring the types of visualization devices utilized.
- one technique for performing a VATS lobectomy places the camera in the lower anterior corner of the patient's chest cavity above the diaphragm
- one technique for performing a VATS segmentectomy places the camera in an anterior intercostal position relative to the segmental fissure.
- the situational awareness system can be trained to recognize the positioning of the medical imaging device according to the visualization of the patient's anatomy.
- one technique for performing a VATS lobectomy utilizes a single medical imaging device, whereas another technique for performing a VATS segmentectomy utilizes multiple cameras.
- one technique for performing a VATS segmentectomy utilizes an infrared light source (which can be communicably coupled to the surgical hub as part of the visualization system) to visualize the segmental fissure, which is not utilized in a VATS lobectomy.
- the surgical hub 106 , 206 can thereby determine the specific type of surgical procedure being performed and/or the technique being used for a particular type of surgical procedure.
- the surgical team begins the dissection step of the procedure.
- the surgical hub 106 , 206 can infer that the surgeon is in the process of dissecting to mobilize the patient's lung because it receives data from the RF or ultrasonic generator indicating that an energy instrument is being fired.
- the surgical hub 106 , 206 can cross-reference the received data with the retrieved steps of the surgical procedure to determine that an energy instrument being fired at this point in the process (i.e., after the completion of the previously discussed steps of the procedure) corresponds to the dissection step.
- the energy instrument can be an energy tool mounted to a robotic arm of a robotic surgical system.
- the surgical team proceeds to the ligation step of the procedure.
- the surgical hub 106 , 206 can infer that the surgeon is ligating arteries and veins because it receives data from the surgical stapling and cutting instrument indicating that the instrument is being fired. Similarly to the prior step, the surgical hub 106 , 206 can derive this inference by cross-referencing the receipt of data from the surgical stapling and cutting instrument with the retrieved steps in the process.
- the surgical instrument can be a surgical tool mounted to a robotic arm of a robotic surgical system.
- the segmentectomy portion of the procedure is performed.
- the surgical hub 106 , 206 can infer that the surgeon is transecting the parenchyma based on data from the surgical stapling and cutting instrument, including data from its cartridge.
- the cartridge data can correspond to the size or type of staple being fired by the instrument, for example.
- the cartridge data can thus indicate the type of tissue being stapled and/or transected.
- the type of staple being fired is utilized for parenchyma (or other similar tissue types), which allows the surgical hub 106 , 206 to infer that the segmentectomy portion of the procedure is being performed.
- the node dissection step is then performed.
- the surgical hub 106 , 206 can infer that the surgical team is dissecting the node and performing a leak test based on data received from the generator indicating that an RF or ultrasonic instrument is being fired.
- an RF or ultrasonic instrument being utilized after parenchyma was transected corresponds to the node dissection step, which allows the surgical hub 106 , 206 to make this inference.
- surgeons regularly switch back and forth between surgical stapling/cutting instruments and surgical energy (i.e., RF or ultrasonic) instruments depending upon the particular step in the procedure because different instruments are better adapted for particular tasks.
- the particular sequence in which the stapling/cutting instruments and surgical energy instruments are used can indicate what step of the procedure the surgeon is performing.
- robotic tools can be utilized for one or more steps in a surgical procedure and/or handheld surgical instruments can be utilized for one or more steps in the surgical procedure.
- the surgeon(s) can alternate between robotic tools and handheld surgical instruments and/or can use the devices concurrently, for example.
- the patient's anesthesia is reversed.
- the surgical hub 106 , 206 can infer that the patient is emerging from the anesthesia based on the ventilator data (i.e., the patient's breathing rate begins increasing), for example.
- the fourteenth step 5228 is that the medical personnel remove the various patient monitoring devices from the patient.
- the surgical hub 106 , 206 can thus infer that the patient is being transferred to a recovery room when the hub loses EKG, BP, and other data from the patient monitoring devices.
- the surgical hub 106 , 206 can determine or infer when each step of a given surgical procedure is taking place according to data received from the various data sources that are communicably coupled to the surgical hub 106 , 206 .
- Robotic surgical systems can be used in minimally invasive medical procedures.
- a patient can be placed on a platform adjacent to a robotic surgical system, and a surgeon can be positioned at a console that is remote from the platform and/or from the robot.
- the surgeon can be positioned outside the sterile field that surrounds the surgical site.
- the surgeon provides input to a user interface via an input device at the console to manipulate a surgical tool coupled to an arm of the robotic system.
- the input device can be a mechanical input devices such as control handles or joysticks, for example, or contactless input devices such as optical gesture sensors, for example.
- the robotic surgical system can include a robot tower supporting one or more robotic arms.
- At least one surgical tool e.g. an end effector and/or endoscope
- the surgical tool(s) can be configured to articulate relative to the respective robotic arm via an articulating wrist assembly and/or to translate relative to the robotic arm via a linear slide mechanism, for example.
- the surgical tool can be inserted into a small incision in a patient via a cannula or trocar, for example, or into a natural orifice of the patient to position the distal end of the surgical tool at the surgical site within the body of the patient.
- the robotic surgical system can be employed in an open surgical procedure in certain instances.
- the robotic surgical system 15000 includes a central control unit 15002 , a surgeon's console 15012 , a robot 15022 including one or more robotic arms 15024 , and a primary display 15040 operably coupled to the control unit 15002 .
- the surgeon's console 15012 includes a display 15014 and at least one manual input device 15016 (e.g., switches, buttons, touch screens, joysticks, gimbals, etc.) that allow the surgeon to telemanipulate the robotic arms 15024 of the robot 15022 .
- the reader will appreciate that additional and alternative input devices can be employed.
- the central control unit 15002 includes a processor 15004 operably coupled to a memory 15006 .
- the processor 15004 includes a plurality of inputs and outputs for interfacing with the components of the robotic surgical system 15000 .
- the processor 15004 can be configured to receive input signals and/or generate output signals to control one or more of the various components (e.g., one or more motors, sensors, and/or displays) of the robotic surgical system 15000 .
- the output signals can include, and/or can be based upon, algorithmic instructions which may be pre-programmed and/or input by the surgeon or another clinician.
- the processor 15004 can be configured to accept a plurality of inputs from a user, such as the surgeon at the console 15012 , and/or may interface with a remote system.
- the memory 15006 can be directly and/or indirectly coupled to the processor 15004 to store instructions and/or databases.
- the robot 15022 includes one or more robotic arms 15024 .
- Each robotic arm 15024 includes one or more motors 15026 and each motor 15026 is coupled to one or more motor drivers 15028 .
- the motors 15026 which can be assigned to different drivers and/or mechanisms, can be housed in a carriage assembly or housing.
- a transmission intermediate a motor 15026 and one or more drivers 15028 can permit coupling and decoupling of the motor 15026 to one or more drivers 15028 .
- the drivers 15028 can be configured to implement one or more surgical functions.
- one or more drivers 15028 can be tasked with moving a robotic arm 15024 by rotating the robotic arm 15024 and/or a linkage and/or joint thereof.
- one or more drivers 15028 can be coupled to a surgical tool 15030 and can implement articulating, rotating, clamping, sealing, stapling, energizing, firing, cutting, and/or opening, for example.
- the surgical tools 15030 can be interchangeable and/or replaceable. Examples of robotic surgical systems and surgical tools are further described herein.
- the computer-implemented interactive surgical system 100 can incorporate the robotic surgical system 15000 .
- the robotic surgical system 15000 can include various features and/or components of the computer-implemented interactive surgical systems 100 and 200 .
- the robotic surgical system 15000 can encompass the robotic system 110 ( FIG. 2 ), which includes the surgeon's console 118 , the surgical robot 120 , and the robotic hub 122 . Additionally or alternatively, the robotic surgical system 15000 can communicate with another hub, such as the surgical hub 106 , for example. In one instance, the robotic surgical system 15000 can be incorporated into a surgical system, such as the computer-implemented interactive surgical system 100 ( FIG. 1 ) or the computer-implemented interactive surgical system 200 ( FIG. 9 ), for example. In such instances, the robotic surgical system 15000 may interact with the cloud 104 or the cloud 204 , respectively, and the surgical hub 106 or the surgical hub 206 , respectively.
- a robotic hub or a surgical hub can include the central control unit 15002 and/or the central control unit 15002 can communicate with a cloud.
- a surgical hub can embody a discrete unit that is separate from the central control unit 15002 and which can communicate with the central control unit 15002 .
- the surgical robot includes an arm 14400 which extends from a base 14401 .
- the arm 14400 includes a number of rigid limbs 14402 that are coupled together by revolute joints 14403 .
- the most proximal limb 14402 a is coupled to the base 14401 by a joint 14403 a.
- the most proximal limb 14402 a and the other limbs are coupled in series to further limbs at the joints 14403 .
- a wrist 14404 can be made up of four individual revolute joints.
- the wrist 14404 couples one limb (e.g. limb 14402 b ) to the most distal limb (e.g. the limb 14402 c in FIG. 23 ) of the arm 14400 .
- the most distal limb 14402 c carries an attachment 14405 for a surgical tool 14406 .
- Each joint 14403 of the arm 14400 has one or more motors 14407 , which can be operated to cause rotational motion at the respective joint, and one or more position and/or torque sensors 14408 , which provide information regarding the current configuration and/or load at that joint 14403 .
- the motors 14407 can be arranged proximally of the joints 14403 whose motion they drive, so as to improve weight distribution, for example. For clarity, only some of the motors and sensors are shown in FIG. 23 .
- the arm 14400 may be generally as described in Patent Application PCT/GB2014/053523 and International Patent Application Publication No. WO 2015/025140, titled DISTRIBUTOR APPARATUS WITH A PAIR OF INTERMESHING SCREW ROTORS, filed Aug. 18, 2014, which published on Feb. 26, 2015, and which is herein incorporated by reference in its entirety. Torque sensing is further described in U.S. Patent Application Publication No. 2016/0331482, titled TORQUE SENSING IN A SURGICAL ROBOTIC WRIST, filed May 13, 2016, which published on Nov. 17, 2016, which is herein incorporated by reference in its entirety.
- the arm 14400 terminates in the attachment 14405 for interfacing with the surgical tool 14406 .
- the attachment 14405 includes a drive assembly for driving articulation of the surgical tool 14406 .
- Movable interface elements of a drive assembly interface mechanically to engage corresponding movable interface elements of the tool interface in order to transfer drive motions from the robot arm 14400 to the surgical tool 14406 .
- One surgical tool may be exchanged for another surgical tool one or more times during a typical operation.
- the surgical tool 14406 can be attachable and detachable from the robot arm 14400 during the operation.
- Features of the drive assembly interface and the tool interface can aid in their alignment when brought into engagement with each other, so as to reduce the accuracy with which they need to be aligned by the user.
- the surgical tool 14406 further includes an end effector for performing an operation.
- the end effector may take any suitable form.
- the end effector may include smooth jaws, serrated jaws, a gripper, a pair of shears, a needle for suturing, a camera, a laser, a knife, a stapler, one or more electrodes, an ultrasonic blade, a cauterizer, and/or a suctioner.
- Alternative end effectors are further described herein.
- the surgical tool 14406 can include an articulation junction between the shaft and the end effector, which can permit the end effector to move relative to the shaft of the tool.
- the joints in the articulation junction can be actuated by driving elements, such as pulley cables.
- Pulley arrangements for articulating the surgical tool 14406 are described in U.S. Patent Application Publication No. 2017/0172553, titled PULLEY ARRANGEMENT FOR ARTICULATING A SURGICAL INSTRUMENT, filed Dec. 9, 2016, which published on Jun. 22, 2017, which is herein incorporated by reference in its entirety.
- the driving elements for articulating the surgical tool 14406 are secured to the interface elements of the tool interface.
- the robot arm 14400 can transfer drive motions to the end effector as follows: movement of a drive assembly interface element moves a tool interface element, which moves a driving element in the tool 14406 , which moves a joint of the articulation junction, which moves the end effector.
- Controllers for the motors 14407 and the sensors 14408 are distributed within the robot arm 14400 .
- the controllers are connected via a communication bus to a control unit 14409 .
- Examples of communication paths in a robotic arm, such as the arm 14400 are further described in U.S. Patent Application Publication No. 2017/0021507, titled DRIVE MECHANISMS FOR ROBOT ARMS and in U.S. Patent Application Publication No. 2017/0021508, titled GEAR PACKAGING FOR ROBOTIC ARMS, each of which was filed Jul. 22, 2016 and published on Jan. 26, 2017, and each of which is herein incorporated by reference in its entirety.
- the control unit 14409 includes a processor 14410 and a memory 14411 .
- the memory 14411 can store software in a non-transient way that is executable by the processor 14410 to control the operation of the motors 14407 to cause the arm 14400 to operate in the manner described herein.
- the software can control the processor 14410 to cause the motors 14407 (for example via distributed controllers) to drive in dependence on inputs from the sensors 14408 and from a surgeon command interface 14412 .
- the control unit 14409 is coupled to the motors 14407 for driving them in accordance with outputs generated by execution of the software.
- the control unit 14409 is coupled to the sensors 14408 for receiving sensed input from the sensors 14408 , and to the command interface 14412 for receiving input from it.
- the respective couplings may, for example, each be electrical or optical cables, and/or may be provided by a wireless connection.
- the command interface 14412 includes one or more input devices whereby a user can request motion of the end effector in a desired way.
- the input devices could, for example, be manually operable mechanical input devices such as control handles or joysticks, or contactless input devices such as optical gesture sensors.
- the software stored in the memory 14411 is configured to respond to those inputs and cause the joints of the arm 14400 and the tool 14406 to move accordingly, in compliance with a pre-determined control strategy.
- the control strategy may include safety features which moderate the motion of the arm 144400 and the tool 14406 in response to command inputs.
- a surgeon at the command interface 14412 can control the surgical tool 14406 to move in such a way as to perform a desired surgical procedure.
- the control unit 14409 and/or the command interface 14412 may be remote from the arm 14400 .
- the robotic surgical systems and features disclosed herein can be employed with the VERSIUS® robotic surgical system and/or the robotic surgical system of FIG. 23 .
- a robotic surgical system can include a robotic control tower, which can house the control unit of the system.
- the control unit 14409 of the robotic surgical system depicted in FIG. 23 can be housed within a robotic control tower.
- the robotic control tower can include a robot hub such as the robotic hub 122 ( FIG. 2 ) or the robotic hub 222 ( FIG. 9 ), for example.
- Such a robotic hub can include a modular interface for coupling with one or more generators, such as an ultrasonic generator and/or a radio frequency generator, and/or one or more modules, such as an imaging module, a suction module, an irrigation module, a smoke evacuation module, and/or a communication module, for example.
- the computer-implemented interactive surgical system 100 ( FIG. 1 ) and the computer-implemented interactive surgical system 200 ( FIG. 9 ) disclosed herein can incorporate the robotic arm 14400 . Additionally or alternatively, the robotic surgical system depicted in FIG. 23 can include various features and/or components of the computer-implemented interactive surgical systems 100 and 200 .
- a robotic hub can include a situational awareness module, which can be configured to synthesize data from multiple sources to determine an appropriate response to a surgical event.
- a situational awareness module can determine the type of surgical procedure, step in the surgical procedure, type of tissue, and/or tissue characteristics, as further described herein.
- a module can recommend a particular course of action or possible choices to the robotic system based on the synthesized data.
- a sensor system encompassing a plurality of sensors distributed throughout the robotic system can provide data, images, and/or other information to the situational awareness module.
- Such a situational awareness module can be incorporated into a control unit, such as the control unit 14409 , for example.
- the situational awareness module can obtain data and/or information from a non-robotic surgical hub and/or a cloud, such as the surgical hub 106 , the surgical hub 206 , the cloud 104 , and/or the cloud 204 , for example.
- Situational awareness of a surgical system is further disclosed herein and in U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, and in U.S. Provisional Patent Application Ser. No. 62/611,340, titled CLOUD-BASED MEDICAL ANALYTICS, filed Dec. 28, 2017, the disclosure of each of which is herein incorporated by reference in its entirety.
- the robotic arm 14400 does not include a linear slide mechanism for moving the attached surgical tool 14406 along a longitudinal axis of the tool 14406 . Rather, the limbs 14402 of the arm 14400 are configured to rotate about the various joints 14403 of the arm 14400 to move the surgical tool 14406 . In other words, even movement of the surgical tool 14406 along the longitudinal axis A T thereof requires the articulation of various limbs 14402 . For example, to move the surgical tool 14406 along the longitudinal axis A T , the robotic arm 14400 would move at multiple revolute joints 14403 thereof.
- linear displacement of the tool 14406 for extending the end effector through a trocar, retracting the end effector from the trocar, and/or for localized displacements of the surgical tool 14406 along the longitudinal axis A T would require the actuation of multiple revolute joints 14403 and the corresponding movement of multiple rigid limb portions 14402 of the arm 14400 .
- intelligent sensing systems, additional communication paths, and/or interactive displays can enable more precise control of the robotic arm including the implementation of control motions that involve a linear displacement of the surgical tool along an axis thereof.
- the robotic system for determining the position of a surgical tool 14406 and/or portions of the robotic arm 14400 , for repositioning of the robotic arm 14400 from within the sterile field, for communicating the position of the surgical tool 14406 relative to the surgical site, for visualizing the surgical tool 14406 at the surgical site, and/or for manipulating the surgical tool 14406 around the surgical site, for example.
- a robotic surgical system can include a primary control mechanism for positioning the tool and a secondary means for directly and/or independently measuring the position of the tool.
- a redundant or secondary sensing system can be configured to determine and/or verify a position of a robotic arm and/or a surgical tool attached to the robotic arm.
- the secondary sensing system can be independent of a primary sensing system.
- the primary control mechanism can rely on closed-loop feedback to calculate the position of the tool.
- a control unit of a robotic surgical system can issue control motions for the robotic arm, including the various motors and/or drivers thereof to move portions of the robotic arm in a three-dimensional space, as further described herein.
- Such a control unit can determine the position and/or orientation of the portions of the robotic arm based on torque sensors on the motors and/or displacement sensors on the drivers, for example.
- the position of the surgical tool, the end effector, and/or components thereof can be determined by proximally-located sensors.
- the proximally-located sensors can be located in a proximal housing or mounting portion of the tool and/or the robotic arm.
- proximally-located sensors can be positioned outside the sterile field, for example.
- the position of a surgical tool mounted to a robotic arm can be determined by measuring the angle(s) of each joint of the arm, for example.
- the control unit and sensors in communication therewith, which determine the position of the arm based on the control motions delivered thereto, can be considered a primary or first sensing system of the robotic surgical system.
- a redundant or secondary sensing system can be employed by the robotic surgical system.
- the secondary sensing system can include one or more distally-located sensors.
- the distally-located sensors can be positioned within the sterile field and/or on the end effector, for example.
- the distally-located sensors are distal to the proximally-located sensors of the primary sensing system, for example.
- the distally-located sensors can be “local” sensors because they are local to the sterile field and/or the surgical site, and the proximally-located sensors can be “remote” sensors because they are remote from the sterile field and/or the surgical site.
- the robotic surgical system 14300 is similar in many respects to the robotic surgical system of FIG. 23 .
- the robotic surgical system 14300 includes a plurality of movable components 14302 .
- the movable components 14302 are rigid limbs that are mechanically coupled in series at revolute joints.
- Such moveable components 14302 can form a robotic arm, similar to the robotic arm 14440 ( FIG. 23 ), for example.
- the distal-most component 14302 includes an attachment for releasably attaching interchangeable surgical tools, such as the surgical tool 14306 , for example.
- Each component 14302 of the robotic arm has one or more motors 14307 and motor drivers 14314 , which can be operated to affect rotational motion at the respective joint.
- Each component 14302 includes one or more sensors 14308 , which can be position sensors and/or torque sensors, for example.
- the sensors 14308 can provide information regarding the current configuration and/or load at the respective joint between the components 14402 .
- the motors 14307 can be controlled by a control unit 14309 , which is configured to receive inputs from the sensors 14308 and/or from a surgical command interface, such as surgical command interface 14412 ( FIG. 23 ), for example.
- a primary sensing system 14310 is incorporated into the control unit 14309 .
- the primary sensing system 14310 can be configured to detect the position of one or more components 14302 .
- the primary sensing system 14310 can include the sensors 14308 for the motors 14307 and/or the drivers 14314 .
- Such sensors 14308 are remote from the patient P and located outside of the sterile field.
- the primary sensing system 14310 can be configured to detect the position(s) of the component(s) 14302 and/or the tool 14306 within the sterile field, such as at the position of the distal end of the robotic arm and/or the attachment portion thereof.
- the control unit 14309 can extrapolate the position of the surgical tool 14306 , for example.
- the robotic surgical system 14300 of FIG. 31 also includes a secondary sensing system 14312 for directly tracking the position and/or orientation or various parts of the robotic surgical system 14300 and/or parts of an associated, non-robotic system such as handheld surgical instruments 14350 .
- the secondary sensing system 14312 includes a magnetic field emitter 14320 that is configured to emit a magnetic field in the vicinity of one or more magnetic sensors to detect the positions thereof.
- Components 14302 of the robotic arm include magnetic sensors 14322 , which can be utilized to determine and/or verify the position of the respective components 14302 .
- the magnetic sensors 14322 are remote to the motors 14307 and the drivers 14308 , for example. In any event, the torque through the motor and/or the displacement of a driver may not affect the output from the magnetic sensors. Consequently, the sensing systems are independent.
- the magnetic sensors 14322 can be positioned within the sterile field.
- the surgical tool 14306 can include the magnetic sensor 14324 , which can be utilized to determine and/or verify the position of the surgical tool 14306 attached to the robotic arm and/or to determine and/or verify the position of a component of the surgical tool 14306 , such as a firing element, for example.
- one or more patient sensors 14326 can be positioned within the patient P to measure the patient's location and/or anatomic orientation.
- one or more trocar sensors 14328 can be positioned on a trocar 14330 to measure the trocar's location and/or orientation, for example.
- the surgical tool 14406 is attached to the attachment portion 14405 at the distal end of the robotic arm 14400 .
- the robotic surgical system can establish a virtual pivot which can be fixed by the robotic surgical system, such that the arm 14400 and/or the surgical tool 14406 can be manipulated thereabout to avoid and/or minimize the application of lateral forces to the trocar.
- applying force(s) to the trocar may damage the surrounding tissue, for example.
- the robotic arm 14400 and/or the surgical tool 14406 can be configured to move about the virtual pivot of the trocar without upsetting the position thereof and, thus, without upsetting the corresponding position of the trocar. Even when applying a linear displacement of the surgical tool 14406 to enter or exit the trocar, the virtual pivot can remain undisturbed.
- the trocar sensor(s) 14328 in FIG. 31 A can be positioned at a virtual pivot 14332 on the trocar 14330 .
- the trocar sensors 14328 can be adjacent to the virtual pivot 14332 .
- Placement of the trocar sensors 14328 at and/or adjacent to the virtual pivot 14332 thereof can track the position of the trocar 14330 and virtual pivot 14332 and help to ensure that the trocar 14330 does not move during displacement of the surgical tool 14306 , for example.
- the robotic surgical system 14300 can confirm and/or maintain the location of the trocar 14330 .
- the secondary sensing system 14312 can confirm the location of the virtual pivot 14332 of the trocar 14330 and the surgical tool 14306 relative thereto.
- one or more sensors 14352 can be positioned on one or more handheld surgical instruments 14350 , which can be employed during a surgical procedure in combination with the surgical tools 14306 utilized by the robotic surgical system 14300 .
- the secondary sensing system 14312 is configured to detect the position and/or orientation of one or more handheld surgical instruments 14350 within the surgical field, for example, within the operating room and/or sterile field.
- Such handheld surgical instruments 14350 can include autonomous control units, which may not be robotically controlled, for example. As depicted in FIG.
- the handheld surgical instruments 14350 can include sensors 14352 , which can be detected by the magnetic field emitter 14320 , for example, such that the position and/or location of the handheld surgical instruments 14350 can be ascertained by the robotic surgical system 14300 .
- components of the handheld surgical instruments 14350 can provide a detectable output.
- a motor and/or battery pack can be detectable by a sensor in the operating room.
- the magnetic field emitter 14320 can be incorporated into a main robot tower.
- the sensors 14322 , 14324 , 14326 , 14328 , and/or 14352 within the sterile field can reflect the magnetic field back to the main robot tower to identity the positions thereof.
- data from the magnetic field emitter 14320 can be communicated to a display 14340 , such that the position of the various components of the surgical robot, surgical tool 14302 , trocar 14330 , patient P, and/or handheld surgical instruments 14350 can be overlaid onto a real-time view of the surgical site, such as views obtained by an endoscope at the surgical site.
- the display 14340 can be in signal communication with the control unit of the robotic surgical system and/or with a robotic hub, such as the hub 106 , robotic hub 122 , the hub 206 , and/or the robot hub 222 ( FIG. 9 ), for example.
- a robotic hub such as the hub 106 , robotic hub 122 , the hub 206 , and/or the robot hub 222 ( FIG. 9 ), for example.
- the magnetic field emitter 14320 can be external to the robot control tower.
- the magnetic field emitter 14320 can be incorporated into a hub.
- time-of-flight sensors can be positioned on one or more of the robot component(s) 14302 , the surgical tool(s) 14306 , the patient P, the trocar(s) 14328 , and/or the handheld surgical instrument(s) 14350 to provide an array of distances between the emitter and the reflector points.
- Such time-of-flight sensors can provide primary or secondary (e.g. redundant) sensing of the position of the robot component(s) 14302 , the surgical tool(s) 14306 , the patient P, the trocar(s) 14328 , and/or the handheld surgical instrument(s) 14350 , for example.
- the time-of-flight sensor(s) can employ an infrared light pulse to provide distance mapping and/or facilitate 3 D imaging within the sterile field.
- the secondary sensing system 14312 can include a redundant sensing system that is configured to confirm the position of the robotic components and/or tools. Additionally or alternatively, the secondary sensing system 14312 can be used to calibrate the primary sensing system 14310 . Additionally or alternatively, the secondary sensing system 14312 can be configured to prevent inadvertent entanglement and/or collisions between robotic arms and/or components of a robotic surgical system.
- the components 14302 of the robotic surgical system 14300 can correspond to discrete robotic arms, such as the robotic arms 15024 in the robotic surgical system 15000 ( FIG. 22 ) and/or the robotic arms depicted in FIG. 2 , for example.
- the secondary sensing system 14312 can be configured to detect the position of the robotic arms and/or portions thereof as the multiple arms are manipulated around the surgical theater. In certain instances, as one or more arms are commanded to move towards a potential collision, the secondary sensing system 14312 can alert the surgeon via an alarm and/or an indication at the surgeon's console in order to prevent an inadvertent collision of the arms.
- the flow chart can be utilized by the robotic surgical system 14300 ( FIG. 31 ), for example.
- two independent sensing systems can be configured to detect the location and/or orientation of a surgical component, such as a portion of a robotic arm and/or a surgical tool.
- the first sensing system, or primary sensing system can rely on the torque and/or load sensors on the motors and/or motor drivers of the robotic arm.
- the second sensing system, or secondary sensing system can rely on magnetic and/or time-of-flight sensors on the robotic arm and/or surgical tool.
- the first and second sensing systems are configured to operate independently and in parallel.
- the first sensing system determines the location and orientation of a robotic component and, at step 14504 , communicates the detected location and orientation to a control unit.
- the second sensing system determines the location and orientation of the robotic component and, at step 14508 , communicates the detected location and orientation to the control unit.
- the independently-ascertained locations and orientations of the robotic component are communicated to a central control unit at step 14510 , such as to the robotic control unit 14309 and/or a surgical hub.
- a central control unit such as to the robotic control unit 14309 and/or a surgical hub.
- the control motions for the robotic component can be optimized at step 14512 .
- discrepancies between the independently-determined positions can be used to improve the accuracy and precision of control motions.
- the control unit can calibrate the control motions based on the feedback from the secondary sensing system.
- the data from the primary and secondary sensing systems can be aggregated by a hub, such as the hub 106 or the hub 206 , for example, and/or data stored in a cloud, such as the cloud 104 or the cloud 204 , for example, to further optimize the control motions of the robotic surgical system.
- a hub such as the hub 106 or the hub 206
- a cloud such as the cloud 104 or the cloud 204
- the robotic system 14300 can be in signal communication with a hub, such as the hub 106 of the hub 206 , for example.
- the hubs 106 , 206 can include a situational awareness module, as further described herein.
- at least one of the first sensor system 14310 and the second sensor system 14312 are data sources for the situational awareness module.
- the sensor systems 14310 and 14312 can provide position data to the situational awareness module.
- the hub 106 , 206 can be configured to optimize and/or calibrate the control motions of the robotic arm 14300 and/or the surgical tool 14306 based on the data from the sensor systems in combination with the situational awareness, for example.
- a sensing system such as the secondary sensing system 14312 can inform the hub 106 , 206 and situational awareness module thereof when a handheld surgical instrument 14350 has entered the operating room or surgical theater and/or when an end effector has been fired, for example. Based on such information, the hub 106 , 206 can determine and/or confirm the particular surgical procedure and/or step thereof.
- the surgical hub includes a processor and a memory communicatively coupled to the processor, as described herein.
- the memory stores instructions executable by the processor to detect a position of a robotically-controlled component independent of a primary sensing system, as described above.
- the present disclosure provides a control circuit configured to detect a position of a robotically-controlled component independent of a primary sensing system, as described above.
- the present disclosure provides a non-transitory computer readable medium storing computer readable instructions which, when executed, cause a machine to detect a position of a robotically-controlled component independent of a primary sensing system, as described above.
- a robotic surgical system can be configured to wirelessly communicate with one or more intelligent surgical tools mounted to a robotic arm thereof.
- the control unit of the robotic system can communicate with the one or more intelligent surgical tools via a wireless connection, for example.
- the robotic surgical system can include a robotic hub, which can wirelessly communicate with the intelligent surgical tool(s) mounted to the robotic arm(s).
- a non-robotic surgical hub can wirelessly communicate with the intelligent surgical tool(s) mounted to a robotic arm.
- information and/or commands can be provided to the intelligent surgical tool(s) from the control unit via the wireless connection.
- certain functions of a surgical tool can be controlled via data received through a wireless communication link on the surgical tool.
- closed-loop feedback can be provided to the robotic surgical system via data received via the wireless communication link to the surgical tool.
- a surgical tool 14206 is mounted to a robotic arm 14000 of a surgical robot.
- the robotic arm 14000 is similar in many respects to the robotic arm 14400 in FIG. 23 .
- the arm 14000 includes a plurality of movable components 14002 .
- the movable components 14002 are rigid limbs that are mechanically coupled in series at revolute joints 14003 .
- Such moveable components 14002 form the robotic arm 14400 , similar to the arm 14400 ( FIG. 23 ), for example.
- a distal-most component 14002 c of the robotic arm 14400 includes an attachment 14005 for releasably attaching interchangeable surgical tools, such as the surgical tool 14206 .
- Each component 14002 of the arm 14000 has one or more motors and motor drivers, which can be operated to affect rotational motion at the respective joint 14003 .
- Each component 14002 includes one or more sensors, which can be position sensors and/or torque sensors, for example, and can provide information regarding the current configuration and/or load at the respective joint between the components 14002 .
- the motors can be controlled by a control unit, such as the control unit 14409 ( FIG. 23 ), which is configured to receive inputs from the sensors 14008 and/or from a command interface, such as the surgeon's command console 14412 ( FIG. 23 ), for example.
- the surgical tool 14206 is a linear stapler including a wireless communication module 14208 ( FIG. 29 ).
- the linear stapler can be an intelligent linear stapler and can include an intelligent fastener cartridge, an intelligent end effector, and/or an intelligent shaft, for example.
- Intelligent surgical components can be configured to determine various tissue properties, for example. In one instance, one or more advanced end effector functions may be implemented based on the detected tissue properties.
- a surgical end effector can include one or more sensors for determining tissue thickness, compression, and/or impedance, for example. Moreover, certain sensed parameters can indicate tissue variations, such as the location of a tumor, for example. Intelligent surgical devices for sensing various tissue properties are further disclosed the following references:
- a wireless communication link 14210 is provided between the surgical tool 14206 and a hub 14212 .
- the hub 14212 is a surgical hub, like the hub 106 or the hub 206 , for example.
- the hub 14212 can be a robotic hub, like the robotic hub 122 or the robotic hub 222 , for example.
- the wireless communication module 14208 includes a wireless signal transmitter that is located near the distal end of the end effector of the surgical tool 14206 .
- the wireless transmitter can be positioned on a proximal portion of the end effector or on the shaft of the surgical tool 14206 .
- the wireless communication link 14212 between the surgical tool 14206 and the surgical hub 14212 provides real-time data transfer through a sterile barrier 14230 .
- the wireless communication module 14208 can be configured to communicate with a robot control tower and/or the control unit, which issues the control motions to the robotic arm 14000 and actuations to the surgical tool 14206 based on inputs at the surgeon's command console.
- the control unit for the robotic arm 14000 can be incorporated into the surgical hub 14212 and/or a robotic hub, such as the robotic hub 122 ( FIG. 2 ) or the robotic hub 222 ( FIG. 9 ), for example.
- lateral displacement of the surgical tool 14206 can be constrained by a physical boundary, such as a longitudinally-extending trocar, for example. In such instances, lateral displacement of the surgical tool 14206 can be determined by a resistance force from and/or on the trocar. Conversely, linear displacement of the surgical tool 14206 can be unconstrained by physical boundaries of the surgical system.
- control unit directs linear displacement of the surgical tool 14206 or a portion thereof, and the various movable links 14002 and joints 14003 articulate to affect the linear displacement, it can be difficult to determine and/or confirm the position of the surgical tool 14206 and respective portions thereof.
- the robotic surgical system can include a secondary sensing system, which is configured to detect the position of the surgical tool 14206 .
- the wireless communication module 14208 can be in signal communication with a secondary sensing system, such as the secondary sensing system 14312 ( FIG. 31 ) and/or a sensor thereof.
- the wireless communication module 14208 can communicate the position of the surgical tool 14206 , as detected by the secondary sensing system 14312 , to the surgical hub 14212 via the wireless communication link 14210 . Additionally or alternatively, the wireless communication module 14208 can communicate information from the various sensors and/or systems of the intelligent surgical tool 14206 to the surgical hub 14212 .
- the surgical hub 14212 can disseminate the information to displays within the operating room or external displays, to a cloud, and/or to one or more hubs and/or control units used in connection with the surgical procedure.
- the surgical tool 14206 can be employed to remove a cancerous tumor 14242 from patient tissue T.
- a predefined margin zone 14240 can be defined around the tumor 14242 .
- the margin zone can be determined by the surgeon based on patient data, aggregated data from a hub and/or a cloud, and/or data sensed by one or more intelligent components of the surgical system, for example.
- the surgical tool 14206 can transect the tissue T along the margin zone 14240 such that the margin zone 14240 is removed along with the tumor 14242 .
- the primary and secondary sensing systems 14310 and 14312 ( FIG. 31 ) can determine the position of the surgical tool 14206 relative to the margin zone, for example.
- the wireless communication module 14208 can communicate the detected position(s) to the control unit.
- the robotic system of FIGS. 28 - 30 can be configured to actuate (e.g. fire) the surgical tool 14206 when the surgical tool 14206 moves within the margin zone 14240 .
- a graphical display 14250 of distance and force-to-close over time for the linear stapler 14206 during the surgical procedure of FIG. 28 is depicted.
- the force-to-close (FTC) increases indicating that the surgical tool 14206 is being clamped on tissue T around the tumor 14242 between time t 1 and time t 2 .
- the surgical tool 14206 is clamped when moved into position a distance between distances D 1 and D 2 .
- the distance D 1 can refer to the outer boundary of the margin zone 14240 around the tumor 14242 , for example
- the distance D 2 can refer to the inner boundary of the margin zone 14240 , which can be assumed boundary of the tumor 14242 , for example.
- control unit and the processor thereof can automatically affect the clamping motion when the surgical tool 14206 is positioned at the appropriate distance based on input from a primary sensing system and/or a secondary sensing system. In other instances, the control unit and the processor thereof can automatically alert the surgeon that the surgical tool 14206 is positioned at the appropriate distance. Similarly, in certain instances, the processor can automatically fire the surgical tool 14206 and/or suggest to the surgeon that the surgical tool 14206 be fired based on the detected position(s) of the surgical tool 14206 .
- actuation motions are envisioned, such as energizing an energy tool and/or articulating and articulatable end effector, for example.
- the hub 14212 can include a situational awareness system, as further described herein.
- the position of the tumor 14242 and/or the margin zone 14240 therearound can be determined by the situational awareness system or module of the hub 14212 .
- the wireless communication module 14208 can be in signal communication with the situational awareness module of the hub 14212 .
- the stapler data and/or the cartridge data provided at steps 5220 and 5222 can be provided via the wireless communication module 14208 of the stapling tool 14206 , for example.
- sensors positioned on the surgical tool 14206 can be utilized to determine and/or confirm the position of the surgical tool 14206 (i.e. a secondary sensing system).
- the detected position of the linear stapler can be communicated to the surgical hub 14212 across the wireless communication link 14210 , as further described herein.
- the surgical hub 14212 can obtain real-time, or near real-time, information regarding the position of the surgical tool 14206 relative to the tumor 14242 and the margin zone 14240 based on the data communicated via the wireless communication link 14210 .
- the robotic surgical system can also determine the position of the surgical tool 14206 based on the motor control algorithms utilized to position the robotic arm 14000 around the surgical theater (i.e. a primary sensing system).
- a robotic surgical system can integrate with an imaging system.
- Real-time feeds from the surgical site which are obtained by the imaging system, can be communicated to the robotic surgical system.
- real-time feeds from the imaging module 138 in the hub 106 can be communicated to the robotic surgical system 110 .
- the real-time feeds can be communicated to the robotic hub 122 .
- the real-time feed can be overlaid onto one or more active robot displays, such as the feeds at the surgeon's command console 118 . Overlaid images can be provided to one or more displays within the surgical theater, such as the displays 107 , 109 , and 119 , for example.
- the overlay of real-time feeds onto a robot display can enable the surgical tools to be precisely controlled within an axes system that is defined by the surgical tool and/or the end effector(s) thereof as visualized by the real-time imaging system.
- cooperating between the robotic surgical system 110 and the imaging system 138 can provide triangulation and instrument mapping of the surgical tools within the visualization field, which can enable precise control of the tool angles and/or advancements thereof.
- shifting control from a standard multi-axes, fixed Cartesian coordinate system to the axis defined by the currently-mounted tool and/or to the end effector thereof can enable the surgeon to issue commands along clear planes and/or axes.
- a processor of the robotic surgical system can direct a displacement of a surgical tool along the axis of the elongate shaft of the surgical tool or a rotation of the surgical tool at a specific angle from the current position based on a selected point to rotate about.
- the overlaid feed of a surgical tool can incorporate a secondary or redundant sensing system, as further described herein, to determine the location and/or orientation of the surgical tool.
- a robotic arm such as the robotic arm 14400 ( FIG. 23 ) can be significantly heavy.
- the weight of a robotic arm can be such that manually lifting or repositioning the robotic arm is difficult for most able-bodied clinicians.
- the motors and drive mechanisms of the robotic arm may only be controlled by a primary control system located at the control unit based on inputs from the surgeon's command console.
- a robotic surgical system such as the system depicted in FIG. 23 , for example, may not include a secondary control system for the robotic arm 14400 that is local to the robotic arm 14400 and within the sterile field.
- a robotic arm in a robotic surgical system may be prone to inadvertent collisions with equipment and/or people within the sterile field.
- surgeon(s), nurse(s), and/or medical assistant(s) positioned within the sterile field may move around the sterile field and/or around the robotic arms.
- the surgeon(s), nurse(s), and/or medical assistant(s) may reposition equipment within the sterile field, such as tables and/or carts, for example.
- a surgeon positioned outside of the sterile field may also want to manually move and/or adjust the position of one of more robotic arms in order to avoid a potential collision with the arm(s), entanglement of the arm with other equipment and/or other arms, and/or to replace, reload, and/or reconfigure a surgical tool mounted to the arm.
- the surgeon may need to power down the robotic surgical system to enable the clinician within the sterile field to manually reposition the robotic arm.
- the clinician can be required to carry the significant weight of the unpowered, or powered down, robotic arm.
- a robotic surgical system can include an interactive display that is local to the sterile field and/or local to the robotic arm(s). Such a local display can facilitate manipulation and/or positioning of the arm(s) by a clinician within the sterile field. Stated differently, an operator other than the surgeon at the command console can control the position of the robotic arm(s).
- the robotic surgical system employing the robotic arm 14000 can employ a passive power assist mode, in which the robotic arm 14400 can easily be repositioned by a clinician within the sterile field.
- the clinician can manually adjust the position of the robotic arm 14000 without requiring the clinician to carry the entire weight of the robotic arm 14000 .
- the clinician can pull and/or push the robotic arm 14000 to adjust the position thereof.
- the passive power assist mode the power to the robotic arm 14000 can be constrained and/or limited to permit the passive repositioning by the clinician.
- a graphical display 14050 of force over time of the robotic arm 14000 ( FIG. 24 ) in a passive power assist mode is depicted.
- a clinician can apply a manual force to the robotic arm 14000 to initiate the repositioning of the robotic arm 14000 .
- the clinician can be within the sterile field.
- the passive power assist mode can be activated when the robotic arm 14000 senses a manual manipulation.
- the manual force exerted by a clinician can increase to exceed a predefined threshold, such as the 15-lb limit indicated in FIG. 25 , for example, to affect repositioning of the robotic arm 14000 .
- a predefined threshold can correspond to the maximum force an able-bodied assist can easily exert on the robotic arm 14000 without undue stress or strain.
- the predefined threshold can correspond to a minimum threshold force on the robotic arm 14000 in order to avoid providing a powered assist to unintentional or inadvertent contacts with the robotic arm 14000 .
- one or more motors e.g. motors 14407 in FIG. 23
- the robotic surgical system can apply an assisting force to the robotic arm 14000 to help reposition the robotic arm 14000 in the direction indicated by the operator's force on the robotic arm 14000 .
- the operator can easily manipulate the position of the arm to avoid inadvertent collisions and/or entanglements and, when the operator's force exceeds a comfortable threshold force, the motors can assist or cooperate in the repositioning of the arm.
- the passive power assist provided by the motors of the robotic surgical system can compensate for the weight of the robotic arm 14000 .
- the assisting force can be less than the weight of the robotic arm 14000 .
- the assisting force can be capped at a maximum force, such as the 5-lb limit indicated in FIG. 25 , for example. Capping the assisting force may ensure that the robotic arm 14000 does not forcefully collide with a person, surgical equipment, and/or another robotic arm in the surgical theater.
- the passive power assist mode can be deactivated or locked out during portions of a surgical procedure. For example, when a surgical tool is positioned at the surgical site or within a predefined radius of the surgical site and/or the target tissue, the passive power assist mode can be locked out. Additionally or alternatively, during certain steps of a surgical procedure the passive power assist mode can be locked out.
- Situational awareness can be configured to determine whether the passive power assist mode should be locked out. For example, based on information that a hub knows regarding the step of the surgical procedure (see, e.g. FIG. 33 ), a passive power assist mode may be ill-advised by the situational awareness module. Similarly, the passive power assist mode can be activated during certain portions of the surgical timeline shown in FIG. 33 .
- control unit for operating a robotic arm includes a processor and a memory communicatively coupled to the processor, as described herein.
- the memory stores instructions executable by the processor to operate in a passive power assist mode in which the processor is configured to process a manual force applied to the robotic arm and, if the manual force exceeds a predefined threshold, to direct one or more motors of the robotic arm to provide an assisting force to reposition the robotic arm in the direction indicated by the manual force.
- the present disclosure provides a control circuit configured to operate a passive power assist mode, as described above.
- the present disclosure provides a non-transitory computer readable medium storing computer readable instructions which, when executed, cause a machine to operate a passive power assist mode, as described above.
- a clinician within the sterile field is utilizing a local control module 14160 within a sterile field to affect repositioning of a robotic arm 14100 .
- the robotic arm 14100 is similar in many respects to the robotic arm 14400 in FIG. 23 .
- the robotic arm 14100 includes a plurality of movable components 14102 .
- the movable components 14102 are rigid limbs that are mechanically coupled in series at revolute joints 14103 .
- the moveable components 14102 form the robotic arm 14100 , similar to the robotic arm 14400 ( FIG. 23 ), for example.
- a distal-most component 14102 c includes an attachment 14105 for releasably attaching interchangeable surgical tools, such as the surgical tool 14106 , for example.
- Each component 14102 of the robotic arm 14100 has one or more motors and motor drivers, which can be operated to affect rotational motion at the respective joint 14103 .
- Each component 14102 includes one or more sensors, which can be position sensors and/or torque sensors, for example, and can provide information regarding the current configuration and/or load at the respective joint between the components 14102 .
- the motors can be controlled by a control unit, such as the control unit 14409 ( FIG. 23 ), which is configured to receive inputs from the sensors and/or from a surgical command interface, such as the surgical command interface 14412 ( FIG. 23 ), for example.
- the local control module 14160 includes an interactive display 14164 and a touch screen 14166 that is configured to accept inputs, such as inputs from a finger and/or a stylus 14168 , for example.
- the local control module 14160 is a handheld, mobile digital electronic device.
- the local control module 14160 can be an iPad® tablet or other mobile tablet or smart phone, for example.
- the clinician provides repositioning instructions to the robotic arm 14100 via the display 14164 and/or the touch screen 14166 of the local control module 14160 .
- the local control module 14160 is a wireless communication module 14162 such that the inputs from the clinician can be communicated to the robotic arm 14100 to affect arm control motions.
- the local control module 14140 can wirelessly communicate with the robotic arm 14140 and/or a control unit (e.g. the control unit 14409 in FIG. 23 ) of the robotic system via a Wi-Fi connection, for example.
- the robotic arm 14100 includes six degrees of freedom indicated by the six arrows in FIG. 26 .
- the proximal degrees of freedom can be controlled by the local control module 14160 and the distal degrees of freedom can be controlled by the remote control module.
- the three most-proximal degrees of freedom articulation about the two most-proximal joints 14103 and rotation of the intermediate limb 14102 about the axis thereof
- the three most-distal degrees of freedom articulation about the most-distal joint 14103 , rotation of the most-distal limb 14102 c about the axis thereof, and displacement of the surgical tool 14106 along the axis thereof
- the remote control module can be controlled by the remote control module.
- the clinician within the sterile field can affect gross robotic arm control motions, such as control motions of the proximal arms and/or joints.
- the clinician within the sterile field can quickly and easily move a robotic arm to a general position, such as a pre-operative position, tool exchanging position, and/or reloading position via the local control module 14160 .
- the local control module 14160 is a secondary control system for the robotic arm 14100 .
- the surgeon outside the sterile field can affect more localized or finessed robotic arm control motions via inputs at the surgeon's command interface 14412 ( FIG. 23 ). In such instances, the surgeon's command interface 14412 outside the sterile field is the primary control system.
- degrees of freedom are contemplated. Alternative degrees of freedom are also contemplated.
- different degrees of freedom can be assigned to the local control module 14160 and/or the remote control module. In certain instances, one or more degrees of freedom can be assigned to both the local control module 14106 and the remote control module.
- a graphical display 14150 of force over time of the robotic arm 14100 is depicted.
- in-field forces are applied to the robotic arm 14100 by a clinician within the sterile field to adjust the general position of the robotic arm 14100 .
- the force attributable to inputs from the local control module 14160 can be capped at a first maximum force (for example the 50-lb limit indicated in FIG. 27 ).
- the clinician within the sterile field can quickly reposition the robotic arm 14100 to exchange and/or reload the surgical tool 14160 , for example.
- Time 0 to time ti can correspond to a local actuation mode.
- Active setup or reloading time in a surgical procedure can occur during the local actuation mode.
- the robotic arm 14100 can be out of contact with patient tissue and/or outside a predefined boundary around the surgical site, for example.
- the surgeon at the surgeon's command console can further actuate the robotic arm 14100 .
- the remotely-actuated forces are attributable to inputs from the surgeon's command console.
- the remotely-actuated forces can be capped at a second maximum force (for example the 5-lb limit indicated in FIG. 27 ), which is less than the first maximum force.
- a surgeon is less likely to cause a high-force or high-speed collision within the sterile field while the larger first maximum force allows the robotic arm 14100 to be quickly repositioned in certain instances.
- Time t 2 to time t 3 can correspond to a remote actuation mode during a surgical procedure, which can include when the robotic tool 14106 is actively manipulating tissue (grasping, pulling, holding, transecting, sealing, etc.) and/or when the robotic arm 14100 and/or surgical tool 14106 thereof is within the predefined boundary around the surgical site.
- the local actuation mode and/or the remote actuation mode can be deactivated or locked out during portions of a surgical procedure.
- the local actuation mode can be locked out when the surgical tool is engaged with tissue or otherwise positioned at the surgical site.
- Situational awareness can be configured to determine whether the local actuation mode should be locked out. For example, based on information that a hub knows regarding the step of the surgical procedure (see, e.g. FIG. 33 ), a local actuation mode may be ill-advised by the situational awareness module. Similarly, the remote actuation mode may be ill-advised during other portions of the surgical procedure.
- control unit for operating a robotic arm includes a processor and a memory communicatively coupled to the processor, as described herein.
- the memory stores instructions executable by the processor to provide control motions to the robotic arm based on input from a local control module during portion(s) of a surgical procedure and to provide control motions to the robotic arm based on input from a remote control module during portion(s) of the surgical procedure.
- a first maximum force can limit the control motions from the local control module and a second maximum force can limit the control motions from the remote control module.
- the present disclosure provides a control circuit configured to operate a robotic arm via a local control module and a remote control module, as described above.
- the present disclosure provides a non-transitory computer readable medium storing computer readable instructions which, when executed, cause a machine to operate a robotic arm via a local control module and a remote control module, as described above.
- a surgical system comprising: a robotic system, comprising: a control unit; a robotic arm comprising an attachment portion; and a first sensor system in signal communication with said control unit, wherein said first sensor system is configured to detect a position of said attachment portion.
- the surgical system further comprises a surgical tool removably attached to said attachment portion.
- the surgical system further comprises a second sensor system configured to detect a position of said surgical tool, wherein said secondary sensor system is independent of said first sensor system.
- Example 1 The surgical system of Example 1, wherein said second sensor system comprises: a magnetic field emitter and a magnetic field sensor incorporated into said surgical tool.
- Example 3 The surgical system of Example 3, further comprising a real-time display configured to display the position of said surgical tool and the position of said instrument sensor based on data from said second sensor system.
- Example 6 The surgical system of Example 6, further comprising a real-time display configured to display the position of said surgical tool and the position of said trocar based on data from said second sensor system.
- the surgical system of Example 8 further comprising a real-time display configured to display the position of said surgical tool and the position of said patient sensors based on data from said second sensor system.
- a surgical system comprising: a robotic system, comprising: a control unit; a robotic arm comprising a first portion, a second portion, and a joint intermediate said first portion and said second portion; a first sensor system configured to detect a position of said first portion and said second portion of said robotic arm; and a redundant sensor system configured to detect a position of said first portion and said second portion of said robotic arm.
- Example 10 The surgical system of Example 10, wherein said robotic arm comprises a motor, and wherein said first sensor system comprises a torque sensor on said motor.
- control unit comprises a processor and a memory communicatively coupled to the processor, wherein said memory stores instructions executable by said processor to compare the position detected by said first sensor system to the position detected by said redundant sensor system to optimize control motions of said robotic arm.
- the surgical system of any one of Examples 10-13 further comprising a control circuit configured to compare the position detected by said first sensor system to the position detected by said redundant sensor system to optimize control motions of said robotic arm.
- a surgical system comprising: a surgical robot, comprising: a control unit; and a robotic arm comprising a motor.
- the surgical system further comprises a surgical tool removably attached to said robotic arm.
- the surgical system further comprises a first sensor system in signal communication with said control unit, wherein said first sensor system comprises a torque sensor on said motor, and wherein said first sensor system is configured to detect a position of said surgical tool.
- the surgical system further comprises a second sensor system configured to independently detect a position of said surgical tool.
- Example 15 The surgical system of Example 15, wherein said second sensor system comprises: a magnetic field emitter and a magnetic field sensor incorporated into said surgical tool.
- the surgical system of any one of Examples 15-19 further comprising a real-time display configured to display one or more positions of said surgical tool based on data from said first sensor system and said second sensor system.
- a machine-readable medium may include any mechanism for storing or transmitting information in a form readable by a machine (e.g., a computer), but is not limited to, floppy diskettes, optical disks, compact disc, read-only memory (CD-ROMs), and magneto-optical disks, read-only memory (ROMs), random access memory (RAM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic or optical cards, flash memory, or a tangible, machine-readable storage used in the transmission of information over the Internet via electrical, optical, acoustical or other forms of propagated signals (e.g., carrier waves, infrared signals, digital signals, etc.). Accordingly, the non-
- control circuit may refer to, for example, hardwired circuitry, programmable circuitry (e.g., a computer processor comprising one or more individual instruction processing cores, processing unit, processor, microcontroller, microcontroller unit, controller, digital signal processor (DSP), programmable logic device (PLD), programmable logic array (PLA), or field programmable gate array (FPGA)), state machine circuitry, firmware that stores instructions executed by programmable circuitry, and any combination thereof.
- programmable circuitry e.g., a computer processor comprising one or more individual instruction processing cores, processing unit, processor, microcontroller, microcontroller unit, controller, digital signal processor (DSP), programmable logic device (PLD), programmable logic array (PLA), or field programmable gate array (FPGA)
- state machine circuitry firmware that stores instructions executed by programmable circuitry, and any combination thereof.
- the control circuit may, collectively or individually, be embodied as circuitry that forms part of a larger system, for example, an integrated circuit (IC), an application-specific integrated circuit (ASIC), a system on-chip (SoC), desktop computers, laptop computers, tablet computers, servers, smart phones, etc.
- IC integrated circuit
- ASIC application-specific integrated circuit
- SoC system on-chip
- control circuit includes, but is not limited to, electrical circuitry having at least one discrete electrical circuit, electrical circuitry having at least one integrated circuit, electrical circuitry having at least one application specific integrated circuit, electrical circuitry forming a general purpose computing device configured by a computer program (e.g., a general purpose computer configured by a computer program which at least partially carries out processes and/or devices described herein, or a microprocessor configured by a computer program which at least partially carries out processes and/or devices described herein), electrical circuitry forming a memory device (e.g., forms of random access memory), and/or electrical circuitry forming a communications device (e.g., a modem, communications switch, or optical-electrical equipment).
- a computer program e.g., a general purpose computer configured by a computer program which at least partially carries out processes and/or devices described herein, or a microprocessor configured by a computer program which at least partially carries out processes and/or devices described herein
- electrical circuitry forming a memory device
- logic may refer to an app, software, firmware and/or circuitry configured to perform any of the aforementioned operations.
- Software may be embodied as a software package, code, instructions, instruction sets and/or data recorded on non-transitory computer readable storage medium.
- Firmware may be embodied as code, instructions or instruction sets and/or data that are hard-coded (e.g., nonvolatile) in memory devices.
- the terms “component,” “system,” “module” and the like can refer to a computer-related entity, either hardware, a combination of hardware and software, software, or software in execution.
- an “algorithm” refers to a self-consistent sequence of steps leading to a desired result, where a “step” refers to a manipulation of physical quantities and/or logic states which may, though need not necessarily, take the form of electrical or magnetic signals capable of being stored, transferred, combined, compared, and otherwise manipulated. It is common usage to refer to these signals as bits, values, elements, symbols, characters, terms, numbers, or the like. These and similar terms may be associated with the appropriate physical quantities and are merely convenient labels applied to these quantities and/or states.
- a network may include a packet switched network.
- the communication devices may be capable of communicating with each other using a selected packet switched network communications protocol.
- One example communications protocol may include an Ethernet communications protocol which may be capable permitting communication using a Transmission Control Protocol/Internet Protocol (TCP/IP).
- TCP/IP Transmission Control Protocol/Internet Protocol
- the Ethernet protocol may comply or be compatible with the Ethernet standard published by the Institute of Electrical and Electronics Engineers (IEEE) titled “IEEE 802.3 Standard”, published in December, 2008 and/or later versions of this standard.
- the communication devices may be capable of communicating with each other using an X.25 communications protocol.
- the X.25 communications protocol may comply or be compatible with a standard promulgated by the International Telecommunication Union-Telecommunication Standardization Sector (ITU-T).
- the communication devices may be capable of communicating with each other using a frame relay communications protocol.
- the frame relay communications protocol may comply or be compatible with a standard promulgated by Consultative Committee for International Circuit and Telephone (CCITT) and/or the American National Standards Institute (ANSI).
- the transceivers may be capable of communicating with each other using an Asynchronous Transfer Mode (ATM) communications protocol.
- ATM Asynchronous Transfer Mode
- the ATM communications protocol may comply or be compatible with an ATM standard published by the ATM Forum titled “ATM-MPLS Network Interworking 2.0” published August 2001, and/or later versions of this standard.
- ATM-MPLS Network Interworking 2.0 published August 2001
- One or more components may be referred to herein as “configured to,” “configurable to,” “operable/operative to,” “adapted/adaptable,” “able to,” “conformable/conformed to,” etc.
- “configured to” can generally encompass active-state components and/or inactive-state components and/or standby-state components, unless context requires otherwise.
- proximal and distal are used herein with reference to a clinician manipulating the handle portion of the surgical instrument.
- proximal refers to the portion closest to the clinician and the term “distal” refers to the portion located away from the clinician.
- distal refers to the portion located away from the clinician.
- spatial terms such as “vertical”, “horizontal”, “up”, and “down” may be used herein with respect to the drawings.
- surgical instruments are used in many orientations and positions, and these terms are not intended to be limiting and/or absolute.
- any reference to “one aspect,” “an aspect,” “an exemplification,” “one exemplification,” and the like means that a particular feature, structure, or characteristic described in connection with the aspect is included in at least one aspect.
- appearances of the phrases “in one aspect,” “in an aspect,” “in an exemplification,” and “in one exemplification” in various places throughout the specification are not necessarily all referring to the same aspect.
- the particular features, structures or characteristics may be combined in any suitable manner in one or more aspects.
Abstract
Various surgical systems are disclosed. A surgical system comprises a robotic system. The robotic system comprises a control unit; a robotic arm comprising an attachment portion; a first sensor system in signal communication with the control unit; and a second sensor system. The first sensor system is configured to detect a position of the attachment portion. A surgical tool is removably attached to the attachment portion. The second sensor system is independent of the first sensor system and is configured to detect a position of the surgical tool.
Description
- This application is a continuation application claiming priority under 37 U.S.C. § 120 to U.S. patent application Ser. No. 15/940,711, entitled SENSING ARRANGEMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS, filed Mar. 29, 2018, now U.S. Patent Application Publication No. 2019/0201120, which claims the benefit of priority under 35 U.S.C. § 119(e) to U.S. Provisional Patent Application Ser. No. 62/649,323, titled SENSING ARRANGEMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS, filed Mar. 28, 2018, the disclosure of which is herein incorporated by reference in its entirety.
- This application is a continuation application claiming priority under 37 U.S.C. § 120 to U.S. patent application Ser. No. 15/940,711, entitled SENSING ARRANGEMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS, filed Mar. 29, 2018, now U.S. Patent Application Publication No. 2019/0201120, which also claims the benefit of priority under 35 U.S.C. § 119(e) to U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, to U.S. Provisional Patent Application Ser. No. 62/611,340, titled CLOUD-BASED MEDICAL ANALYTICS, filed Dec. 28, 2017, and to U.S. Provisional Patent Application Ser. No. 62/611,339, titled ROBOT ASSISTED SURGICAL PLATFORM, filed Dec. 28, 2017, the disclosure of each of which is herein incorporated by reference in its entirety.
- The present disclosure relates to robotic surgical systems. Robotic surgical systems can include a central control unit, a surgeon's command console, and a robot having one or more robotic arms. Robotic surgical tools can be releasably mounted to the robotic arm(s). The number and type of robotic surgical tools can depend on the type of surgical procedure. Robotic surgical systems can be used in connection with one or more displays and/or one or more handheld surgical instruments during a surgical procedure.
- In one general aspect, a surgical system is provided. The surgical system comprises a robotic system. The robotic system comprises a control unit; a robotic arm comprising an attachment portion; a first sensor system in signal communication with the control unit; and a second sensor system. The first sensor system is configured to detect a position of the attachment portion. The surgical system further comprises a surgical tool removably attached to the attachment portion. The second sensor system is independent of the first sensor system and is configured to detect a position of the surgical tool.
- In another general aspect, another surgical system is provided. The surgical system comprises a robotic system. The robotic system comprises a control unit; a robotic arm comprising a first portion, a second portion, and a joint intermediate the first and second portions; a first sensor system configured to detect a position of the first and second portions of the robotic arm; and a redundant sensor system. The redundant sensor system is configured to detect a position of the first portion and the second portion of the robotic arm.
- In yet another general aspect, another surgical system is provided. The surgical system comprises a surgical robot, comprising: a control unit and a robotic arm. The robotic arm comprises a motor. The surgical system further comprises a surgical tool removably attached to the robotic arm; a first sensor system in signal communication with the control unit; and a second sensor system. The first sensor system comprises a torque sensor on the motor, and is configured to detect a position of the surgical tool. The second sensor system is configured to independently detect a position of the surgical tool.
- The features of various aspects are set forth with particularity in the appended claims. The various aspects, however, both as to organization and methods of operation, together with further objects and advantages thereof, may best be understood by reference to the following description, taken in conjunction with the accompanying drawings as follows.
-
FIG. 1 is a block diagram of a computer-implemented interactive surgical system, in accordance with at least one aspect of the present disclosure. -
FIG. 2 is a surgical system being used to perform a surgical procedure in an operating room, in accordance with at least one aspect of the present disclosure. -
FIG. 3 is a surgical hub paired with a visualization system, a robotic system, and an intelligent instrument, in accordance with at least one aspect of the present disclosure. -
FIG. 4 is a partial perspective view of a surgical hub enclosure, and of a combo generator module slidably receivable in a drawer of the surgical hub enclosure, in accordance with at least one aspect of the present disclosure. -
FIG. 5 is a perspective view of a combo generator module with bipolar, ultrasonic, and monopolar contacts and a smoke evacuation component, in accordance with at least one aspect of the present disclosure. -
FIG. 6 illustrates individual power bus attachments for a plurality of lateral docking ports of a lateral modular housing configured to receive a plurality of modules, in accordance with at least one aspect of the present disclosure. -
FIG. 7 illustrates a vertical modular housing configured to receive a plurality of modules, in accordance with at least one aspect of the present disclosure. -
FIG. 8 illustrates a surgical data network comprising a modular communication hub configured to connect modular devices located in one or more operating theaters of a healthcare facility, or any room in a healthcare facility specially equipped for surgical operations, to the cloud, in accordance with at least one aspect of the present disclosure. -
FIG. 9 illustrates a computer-implemented interactive surgical system, in accordance with at least one aspect of the present disclosure. -
FIG. 10 illustrates a surgical hub comprising a plurality of modules coupled to the modular control tower, in accordance with at least one aspect of the present disclosure. -
FIG. 11 illustrates one aspect of a Universal Serial Bus (USB) network hub device, in accordance with at least one aspect of the present disclosure. -
FIG. 12 illustrates a logic diagram of a control system of a surgical instrument or tool, in accordance with at least one aspect of the present disclosure. -
FIG. 13 illustrates a control circuit configured to control aspects of the surgical instrument or tool, in accordance with at least one aspect of the present disclosure. -
FIG. 14 illustrates a combinational logic circuit configured to control aspects of the surgical instrument or tool, in accordance with at least one aspect of the present disclosure. -
FIG. 15 illustrates a sequential logic circuit configured to control aspects of the surgical instrument or tool, in accordance with at least one aspect of the present disclosure. -
FIG. 16 illustrates a surgical instrument or tool comprising a plurality of motors which can be activated to perform various functions, in accordance with at least one aspect of the present disclosure. -
FIG. 17 is a schematic diagram of a robotic surgical instrument configured to operate a surgical tool described herein, in accordance with at least one aspect of the present disclosure. -
FIG. 18 illustrates a block diagram of a surgical instrument programmed to control the distal translation of a displacement member, in accordance with at least one aspect of the present disclosure. -
FIG. 19 is a schematic diagram of a surgical instrument configured to control various functions, in accordance with at least one aspect of the present disclosure. -
FIG. 20 is a simplified block diagram of a generator configured to provide inductorless tuning, among other benefits, in accordance with at least one aspect of the present disclosure. -
FIG. 21 illustrates an example of a generator, which is one form of the generator ofFIG. 20 , in accordance with at least one aspect of the present disclosure. -
FIG. 22 is a schematic of a robotic surgical system, in accordance with one aspect of the present disclosure. -
FIG. 23 is a perspective view of a robot arm of a robotic surgical system and schematically depicts additional components of the robotic surgical system, in accordance with one aspect of the present disclosure. -
FIG. 24 is a perspective view of a robotic arm of a robotic surgical system, and further depicts an operator manually adjusting the position of the robotic arm, in accordance with one aspect of the present disclosure. -
FIG. 25 is a graphical display of force over time of the robotic arm ofFIG. 24 in a passive power assist mode, in accordance with one aspect of the present disclosure. -
FIG. 26 is a perspective view of a robotic arm and a secondary interactive display within a sterile field, in accordance with at least one aspect of the present disclosure. -
FIG. 27 is a graphical display of force over time of the robotic arm ofFIG. 26 , in accordance with one aspect of the present disclosure. -
FIG. 28 is a perspective view of a robotic arm and a robotic hub of a robotic surgical system, in accordance with at least one aspect of the present disclosure. -
FIG. 29 is a detail view of an end effector of a linear stapler attached to the robotic arm ofFIG. 28 , depicting the end effector positioned relative to a targeted tissue region during a surgical procedure, in accordance with at least one aspect of the present disclosure. -
FIG. 30 is a graphical display of distance and force-to-close over time for the linear stapler ofFIG. 29 , in accordance with one aspect of the present disclosure. -
FIG. 31 is a schematic depicting a robotic surgical system having a plurality of sensing systems, in accordance with one aspect of the present disclosure. -
FIG. 31A is a detail view of a trocar ofFIG. 31 , in accordance with at least one aspect of the present disclosure. -
FIG. 32 is a flowchart depicting a robotic surgical system utilizing a plurality of independent sensing systems, in accordance with one aspect of the present disclosure. -
FIG. 33 is a timeline depicting situational awareness of a surgical hub, in accordance with one aspect of the present disclosure. - Applicant of the present application owns the following U.S. Provisional Patent Applications, filed on Mar. 28, 2018, each of which is herein incorporated by reference in its entirety:
-
- U.S. Provisional Patent Application Ser. No. 62/649,302, titled INTERACTIVE SURGICAL SYSTEMS WITH ENCRYPTED COMMUNICATION CAPABILITIES;
- U.S. Provisional Patent Application Ser. No. 62/649,294, titled DATA STRIPPING METHOD TO INTERROGATE PATIENT RECORDS AND CREATE ANONYMIZED RECORD;
- U.S. Provisional Patent Application Ser. No. 62/649,300, titled SURGICAL HUB SITUATIONAL AWARENESS;
- U.S. Provisional Patent Application Ser. No. 62/649,309, titled SURGICAL HUB SPATIAL AWARENESS TO DETERMINE DEVICES IN OPERATING THEATER;
- U.S. Provisional Patent Application Ser. No. 62/649,310, titled COMPUTER IMPLEMENTED INTERACTIVE SURGICAL SYSTEMS;
- U.S. Provisional Patent Application Ser. No. 62/649,291, titled USE OF LASER LIGHT AND RED-GREEN-BLUE COLORATION TO DETERMINE PROPERTIES OF BACK SCATTERED LIGHT;
- U.S. Provisional Patent Application Ser. No. 62/649,296, titled ADAPTIVE CONTROL PROGRAM UPDATES FOR SURGICAL DEVICES;
- U.S. Provisional Patent Application Ser. No. 62/649,333, titled CLOUD-BASED MEDICAL ANALYTICS FOR CUSTOMIZATION AND RECOMMENDATIONS TO A USER;
- U.S. Provisional Patent Application Ser. No. 62/649,327, titled CLOUD-BASED MEDICAL ANALYTICS FOR SECURITY AND AUTHENTICATION TRENDS AND REACTIVE MEASURES;
- U.S. Provisional Patent Application Ser. No. 62/649,315, titled DATA HANDLING AND PRIORITIZATION IN A CLOUD ANALYTICS NETWORK;
- U.S. Provisional Patent Application Ser. No. 62/649,313, titled CLOUD INTERFACE FOR COUPLED SURGICAL DEVICES;
- U.S. Provisional Patent Application Ser. No. 62/649,320, titled DRIVE ARRANGEMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS;
- U.S. Provisional Patent Application Ser. No. 62/649,307, titled AUTOMATIC TOOL ADJUSTMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS; and
- U.S. Provisional Patent Application Ser. No. 62/649,323, titled SENSING ARRANGEMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS. Applicant of the present application owns the following U.S. Patent Applications, filed on Mar. 29, 2018, each of which is herein incorporated by reference in its entirety:
- U.S. patent application Ser. No. 15/940,641, titled INTERACTIVE SURGICAL SYSTEMS WITH ENCRYPTED COMMUNICATION CAPABILITIES, now U.S. Pat. No. 10,944,728;
- U.S. patent application Ser. No. 15/940,648, titled INTERACTIVE SURGICAL SYSTEMS WITH CONDITION HANDLING OF DEVICES AND DATA CAPABILITIES, now U.S. Pat. No. 11,069,012;
- U.S. patent application Ser. No. 15/940,656, titled SURGICAL HUB COORDINATION OF CONTROL AND COMMUNICATION OF OPERATING ROOM DEVICES, now U.S. Pat. No. 11,166,772;
- U.S. patent application Ser. No. 15/940,666, titled SPATIAL AWARENESS OF SURGICAL HUBS IN OPERATING ROOMS, now U.S. Patent Application Publication No. 2019/0206551;
- U.S. patent application Ser. No. 15/940,670, titled COOPERATIVE UTILIZATION OF DATA DERIVED FROM SECONDARY SOURCES BY INTELLIGENT SURGICAL HUBS, now U.S. Pat. No. 11,266,468;
- U.S. patent application Ser. No. 15/940,677, titled SURGICAL HUB CONTROL ARRANGEMENTS, now U.S. Pat. No. 10,987,178;
- U.S. patent application Ser. No. 15/940,632, titled DATA STRIPPING METHOD TO INTERROGATE PATIENT RECORDS AND CREATE ANONYMIZED RECORD, now U.S. Pat. No. 11,132,462;
- U.S. patent application Ser. No. 15/940,640, titled COMMUNICATION HUB AND STORAGE DEVICE FOR STORING PARAMETERS AND STATUS OF A SURGICAL DEVICE TO BE SHARED WITH CLOUD BASED ANALYTICS SYSTEMS, now U.S. Pat. No. 11,202,570;
- U.S. patent application Ser. No. 15/940,645, titled SELF DESCRIBING DATA PACKETS GENERATED AT AN ISSUING INSTRUMENT, now U.S. Pat. No. 10,892,899;
- U.S. patent application Ser. No. 15/940,649, titled DATA PAIRING TO INTERCONNECT A DEVICE MEASURED PARAMETER WITH AN OUTCOME, now U.S. Patent Application Publication No. 2019/0205567;
- U.S. patent application Ser. No. 15/940,654, titled SURGICAL HUB SITUATIONAL AWARENESS, now U.S. Patent Application Publication No. 2019/0201140;
- U.S. patent application Ser. No. 15/940,663, titled SURGICAL SYSTEM DISTRIBUTED PROCESSING, now U.S. Patent Application Publication No. 2019/0201033;
- U.S. patent application Ser. No. 15/940,668, titled AGGREGATION AND REPORTING OF SURGICAL HUB DATA, now U.S. Patent Application Publication No. 2019/0201115;
- U.S. patent application Ser. No. 15/940,671, titled SURGICAL HUB SPATIAL AWARENESS TO DETERMINE DEVICES IN OPERATING THEATER, now U.S. Patent Application Publication No. 2019/0201104;
- U.S. patent application Ser. No. 15/940,686, titled DISPLAY OF ALIGNMENT OF STAPLE CARTRIDGE TO PRIOR LINEAR STAPLE LINE, now U.S. Pat. No. 11,026,751;
- U.S. patent application Ser. No. 15/940,700, titled STERILE FIELD INTERACTIVE CONTROL DISPLAYS, now U.S. Patent Application Publication No. 2019/0205001;
- U.S. patent application Ser. No. 15/940,629, titled COMPUTER IMPLEMENTED INTERACTIVE SURGICAL SYSTEMS, now U.S. Patent Application Publication No. 2019/0201112;
- U.S. patent application Ser. No. 15/940,704, titled USE OF LASER LIGHT AND RED-GREEN-BLUE COLORATION TO DETERMINE PROPERTIES OF BACK SCATTERED LIGHT, now U.S. Pat. No. 11,100,631;
- U.S. patent application Ser. No. 15/940,722, titled CHARACTERIZATION OF TISSUE IRREGULARITIES THROUGH THE USE OF MONO-CHROMATIC LIGHT REFRACTIVITY, now U.S. Patent Application Publication No. 2019/0200905; and
- U.S. patent application Ser. No. 15/940,742, titled DUAL CMOS ARRAY IMAGING, now U.S. Patent Application Publication No. 2019/0200906.
- Applicant of the present application owns the following U.S. Patent Applications, filed on Mar. 29, 2018, each of which is herein incorporated by reference in its entirety:
-
- U.S. patent application Ser. No. 15/940,636, titled ADAPTIVE CONTROL PROGRAM UPDATES FOR SURGICAL DEVICES, now U.S. Patent Application Publication No. 2019/0206003;
- U.S. patent application Ser. No. 15/940,653, titled ADAPTIVE CONTROL PROGRAM UPDATES FOR SURGICAL HUBS, now U.S. Pat. No. 11,076,921;
- U.S. patent application Ser. No. 15/940,660, titled CLOUD-BASED MEDICAL ANALYTICS FOR CUSTOMIZATION AND RECOMMENDATIONS TO A USER, now U.S. Patent Application Publication No. 2019/0206555;
- U.S. patent application Ser. No. 15/940,679, titled CLOUD-BASED MEDICAL ANALYTICS FOR LINKING OF LOCAL USAGE TRENDS WITH THE RESOURCE ACQUISITION BEHAVIORS OF LARGER DATA SET, now U.S. Pat. No. 10,932,872;
- U.S. patent application Ser. No. 15/940,694, titled CLOUD-BASED MEDICAL ANALYTICS FOR MEDICAL FACILITY SEGMENTED INDIVIDUALIZATION OF INSTRUMENT FUNCTION, now U.S. Pat. No. 10,966,791;
- U.S. patent application Ser. No. 15/940,634, titled CLOUD-BASED MEDICAL ANALYTICS FOR SECURITY AND AUTHENTICATION TRENDS AND REACTIVE MEASURES, now U.S. Pat. No. 11,179,208;
- U.S. patent application Ser. No. 15/940,706, titled DATA HANDLING AND PRIORITIZATION IN A CLOUD ANALYTICS NETWORK, now U.S. Patent Application Publication No. 2019/0206561; and
- U.S. patent application Ser. No. 15/940,675, titled CLOUD INTERFACE FOR COUPLED SURGICAL DEVICES, now U.S. Pat. No. 10,849,697.
- Applicant of the present application owns the following U.S. Patent Applications, filed on Mar. 29, 2018, each of which is herein incorporated by reference in its entirety:
-
- U.S. patent application Ser. No. 15/940,627, titled DRIVE ARRANGEMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS, now U.S. Pat. No. 11,013,563;
- U.S. patent application Ser. No. 15/940,637, titled COMMUNICATION ARRANGEMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS, now U.S. Patent Application Publication No. 2019/0201139;
- U.S. patent application Ser. No. 15/940,642, titled CONTROLS FOR ROBOT-ASSISTED SURGICAL PLATFORMS, now U.S. Patent Application Publication No. 2019/0201113;
- U.S. patent application Ser. No. 15/940,676, titled AUTOMATIC TOOL ADJUSTMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS, now U.S. Patent Application Publication No. 2019/0201142;
- U.S. patent application Ser. No. 15/940,680, titled CONTROLLERS FOR ROBOT-ASSISTED SURGICAL PLATFORMS, now U.S. Pat. No. 11,213,359;
- U.S. patent application Ser. No. 15/940,683, titled COOPERATIVE SURGICAL ACTIONS FOR ROBOT-ASSISTED SURGICAL PLATFORMS, now U.S. Pat. No. 11,058,498; and
- U.S. patent application Ser. No. 15/940,690, titled DISPLAY ARRANGEMENTS FOR ROBOT-ASSISTED SURGICAL PLATFORMS, now U.S. Patent Application Publication No. 2019/0201118.
- Before explaining various aspects of surgical devices and generators in detail, it should be noted that the illustrative examples are not limited in application or use to the details of construction and arrangement of parts illustrated in the accompanying drawings and description. The illustrative examples may be implemented or incorporated in other aspects, variations and modifications, and may be practiced or carried out in various ways. Further, unless otherwise indicated, the terms and expressions employed herein have been chosen for the purpose of describing the illustrative examples for the convenience of the reader and are not for the purpose of limitation thereof. Also, it will be appreciated that one or more of the following-described aspects, expressions of aspects, and/or examples, can be combined with any one or more of the other following-described aspects, expressions of aspects and/or examples.
- Referring to
FIG. 1 , a computer-implemented interactivesurgical system 100 includes one or moresurgical systems 102 and a cloud-based system (e.g., thecloud 104 that may include aremote server 113 coupled to a storage device 105). Eachsurgical system 102 includes at least onesurgical hub 106 in communication with thecloud 104 that may include aremote server 113. In one example, as illustrated inFIG. 1 , thesurgical system 102 includes avisualization system 108, arobotic system 110, and a handheld intelligentsurgical instrument 112, which are configured to communicate with one another and/or thehub 106. In some aspects, asurgical system 102 may include an M number ofhubs 106, an N number ofvisualization systems 108, an 0 number ofrobotic systems 110, and a P number of handheld intelligentsurgical instruments 112, where M, N, O, and P are integers greater than or equal to one. -
FIG. 3 depicts an example of asurgical system 102 being used to perform a surgical procedure on a patient who is lying down on an operating table 114 in asurgical operating room 116. Arobotic system 110 is used in the surgical procedure as a part of thesurgical system 102. Therobotic system 110 includes a surgeon'sconsole 118, a patient side cart 120 (surgical robot), and a surgicalrobotic hub 122. Thepatient side cart 120 can manipulate at least one removably coupledsurgical tool 117 through a minimally invasive incision in the body of the patient while the surgeon views the surgical site through the surgeon'sconsole 118. An image of the surgical site can be obtained by amedical imaging device 124, which can be manipulated by thepatient side cart 120 to orient theimaging device 124. Therobotic hub 122 can be used to process the images of the surgical site for subsequent display to the surgeon through the surgeon'sconsole 118. - Other types of robotic systems can be readily adapted for use with the
surgical system 102. Various examples of robotic systems and surgical tools that are suitable for use with the present disclosure are described in U.S. Provisional Patent Application Ser. No. 62/611,339, titled ROBOT ASSISTED SURGICAL PLATFORM, filed Dec. 28, 2017, the disclosure of which is herein incorporated by reference in its entirety. - Various examples of cloud-based analytics that are performed by the
cloud 104, and are suitable for use with the present disclosure, are described in U.S. Provisional Patent Application Ser. No. 62/611,340, titled CLOUD-BASED MEDICAL ANALYTICS, filed Dec. 28, 2017, the disclosure of which is herein incorporated by reference in its entirety. - In various aspects, the
imaging device 124 includes at least one image sensor and one or more optical components. Suitable image sensors include, but are not limited to, Charge-Coupled Device (CCD) sensors and Complementary Metal-Oxide Semiconductor (CMOS) sensors. - The optical components of the
imaging device 124 may include one or more illumination sources and/or one or more lenses. The one or more illumination sources may be directed to illuminate portions of the surgical field. The one or more image sensors may receive light reflected or refracted from the surgical field, including light reflected or refracted from tissue and/or surgical instruments. - The one or more illumination sources may be configured to radiate electromagnetic energy in the visible spectrum as well as the invisible spectrum. The visible spectrum, sometimes referred to as the optical spectrum or luminous spectrum, is that portion of the electromagnetic spectrum that is visible to (i.e., can be detected by) the human eye and may be referred to as visible light or simply light. A typical human eye will respond to wavelengths in air that are from about 380 nm to about 750 nm.
- The invisible spectrum (i.e., the non-luminous spectrum) is that portion of the electromagnetic spectrum that lies below and above the visible spectrum (i.e., wavelengths below about 380 nm and above about 750 nm). The invisible spectrum is not detectable by the human eye. Wavelengths greater than about 750 nm are longer than the red visible spectrum, and they become invisible infrared (IR), microwave, and radio electromagnetic radiation. Wavelengths less than about 380 nm are shorter than the violet spectrum, and they become invisible ultraviolet, x-ray, and gamma ray electromagnetic radiation.
- In various aspects, the
imaging device 124 is configured for use in a minimally invasive procedure. Examples of imaging devices suitable for use with the present disclosure include, but not limited to, an arthroscope, angioscope, bronchoscope, choledochoscope, colonoscope, cytoscope, duodenoscope, enteroscope, esophagogastro-duodenoscope (gastroscope), endoscope, laryngoscope, nasopharyngo-neproscope, sigmoidoscope, thoracoscope, and ureteroscope. - In one aspect, the imaging device employs multi-spectrum monitoring to discriminate topography and underlying structures. A multi-spectral image is one that captures image data within specific wavelength ranges across the electromagnetic spectrum. The wavelengths may be separated by filters or by the use of instruments that are sensitive to particular wavelengths, including light from frequencies beyond the visible light range, e.g., IR and ultraviolet. Spectral imaging can allow extraction of additional information the human eye fails to capture with its receptors for red, green, and blue. The use of multi-spectral imaging is described in greater detail under the heading “Advanced Imaging Acquisition Module” in U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, the disclosure of which is herein incorporated by reference in its entirety. Multi-spectrum monitoring can be a useful tool in relocating a surgical field after a surgical task is completed to perform one or more of the previously described tests on the treated tissue.
- It is axiomatic that strict sterilization of the operating room and surgical equipment is required during any surgery. The strict hygiene and sterilization conditions required in a “surgical theater,” i.e., an operating or treatment room, necessitate the highest possible sterility of all medical devices and equipment. Part of that sterilization process is the need to sterilize anything that comes in contact with the patient or penetrates the sterile field, including the
imaging device 124 and its attachments and components. It will be appreciated that the sterile field may be considered a specified area, such as within a tray or on a sterile towel, that is considered free of microorganisms, or the sterile field may be considered an area, immediately around a patient, who has been prepared for a surgical procedure. The sterile field may include the scrubbed team members, who are properly attired, and all furniture and fixtures in the area. - In various aspects, the
visualization system 108 includes one or more imaging sensors, one or more image processing units, one or more storage arrays, and one or more displays that are strategically arranged with respect to the sterile field, as illustrated inFIG. 2 . In one aspect, thevisualization system 108 includes an interface for HL7, PACS, and EMR. Various components of thevisualization system 108 are described under the heading “Advanced Imaging Acquisition Module” in U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, the disclosure of which is herein incorporated by reference in its entirety. - As illustrated in
FIG. 2 , aprimary display 119 is positioned in the sterile field to be visible to an operator at the operating table 114. In addition, a visualization tower 111 is positioned outside the sterile field. The visualization tower 111 includes a firstnon-sterile display 107 and a secondnon-sterile display 109, which face away from each other. Thevisualization system 108, guided by thehub 106, is configured to utilize thedisplays hub 106 may cause thevisualization system 108 to display a snap-shot of a surgical site, as recorded by animaging device 124, on anon-sterile display primary display 119. The snap-shot on thenon-sterile display - In one aspect, the
hub 106 is also configured to route a diagnostic input or feedback entered by a non-sterile operator at the visualization tower 111 to theprimary display 119 within the sterile field, where it can be viewed by a sterile operator at the operating table. In one example, the input can be in the form of a modification to the snap-shot displayed on thenon-sterile display primary display 119 by thehub 106. - Referring to
FIG. 2 , asurgical instrument 112 is being used in the surgical procedure as part of thesurgical system 102. Thehub 106 is also configured to coordinate information flow to a display of thesurgical instrument 112. For example, in U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, the disclosure of which is herein incorporated by reference in its entirety. A diagnostic input or feedback entered by a non-sterile operator at the visualization tower 111 can be routed by thehub 106 to thesurgical instrument display 115 within the sterile field, where it can be viewed by the operator of thesurgical instrument 112. Example surgical instruments that are suitable for use with thesurgical system 102 are described under the heading “Surgical Instrument Hardware” and in U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, the disclosure of which is herein incorporated by reference in its entirety, for example. - Referring now to
FIG. 3 , ahub 106 is depicted in communication with avisualization system 108, arobotic system 110, and a handheld intelligentsurgical instrument 112. Thehub 106 includes ahub display 135, animaging module 138, agenerator module 140, acommunication module 130, aprocessor module 132, and astorage array 134. In certain aspects, as illustrated inFIG. 3 , thehub 106 further includes asmoke evacuation module 126 and/or a suction/irrigation module 128. - During a surgical procedure, energy application to tissue, for sealing and/or cutting, is generally associated with smoke evacuation, suction of excess fluid, and/or irrigation of the tissue. Fluid, power, and/or data lines from different sources are often entangled during the surgical procedure. Valuable time can be lost addressing this issue during a surgical procedure. Detangling the lines may necessitate disconnecting the lines from their respective modules, which may require resetting the modules. The hub
modular enclosure 136 offers a unified environment for managing the power, data, and fluid lines, which reduces the frequency of entanglement between such lines. - Aspects of the present disclosure present a surgical hub for use in a surgical procedure that involves energy application to tissue at a surgical site. The surgical hub includes a hub enclosure and a combo generator module slidably receivable in a docking station of the hub enclosure. The docking station includes data and power contacts. The combo generator module includes two or more of an ultrasonic energy generator component, a bipolar RF energy generator component, and a monopolar RF energy generator component that are housed in a single unit. In one aspect, the combo generator module also includes a smoke evacuation component, at least one energy delivery cable for connecting the combo generator module to a surgical instrument, at least one smoke evacuation component configured to evacuate smoke, fluid, and/or particulates generated by the application of therapeutic energy to the tissue, and a fluid line extending from the remote surgical site to the smoke evacuation component.
- In one aspect, the fluid line is a first fluid line and a second fluid line extends from the remote surgical site to a suction and irrigation module slidably received in the hub enclosure. In one aspect, the hub enclosure comprises a fluid interface.
- Certain surgical procedures may require the application of more than one energy type to the tissue. One energy type may be more beneficial for cutting the tissue, while another different energy type may be more beneficial for sealing the tissue. For example, a bipolar generator can be used to seal the tissue while an ultrasonic generator can be used to cut the sealed tissue. Aspects of the present disclosure present a solution where a hub
modular enclosure 136 is configured to accommodate different generators, and facilitate an interactive communication therebetween. One of the advantages of the hubmodular enclosure 136 is enabling the quick removal and/or replacement of various modules. - Aspects of the present disclosure present a modular surgical enclosure for use in a surgical procedure that involves energy application to tissue. The modular surgical enclosure includes a first energy-generator module, configured to generate a first energy for application to the tissue, and a first docking station comprising a first docking port that includes first data and power contacts, wherein the first energy-generator module is slidably movable into an electrical engagement with the power and data contacts and wherein the first energy-generator module is slidably movable out of the electrical engagement with the first power and data contacts.
- Further to the above, the modular surgical enclosure also includes a second energy-generator module configured to generate a second energy, different than the first energy, for application to the tissue, and a second docking station comprising a second docking port that includes second data and power contacts, wherein the second energy-generator module is slidably movable into an electrical engagement with the power and data contacts, and wherein the second energy-generator module is slidably movable out of the electrical engagement with the second power and data contacts.
- In addition, the modular surgical enclosure also includes a communication bus between the first docking port and the second docking port, configured to facilitate communication between the first energy-generator module and the second energy-generator module.
- Referring to
FIGS. 3-7 , aspects of the present disclosure are presented for a hubmodular enclosure 136 that allows the modular integration of agenerator module 140, asmoke evacuation module 126, and a suction/irrigation module 128. The hubmodular enclosure 136 further facilitates interactive communication between themodules FIG. 5 , thegenerator module 140 can be a generator module with integrated monopolar, bipolar, and ultrasonic components supported in asingle housing unit 139 slidably insertable into the hubmodular enclosure 136. As illustrated inFIG. 5 , thegenerator module 140 can be configured to connect to amonopolar device 146, abipolar device 147, and anultrasonic device 148. Alternatively, thegenerator module 140 may comprise a series of monopolar, bipolar, and/or ultrasonic generator modules that interact through the hubmodular enclosure 136. The hubmodular enclosure 136 can be configured to facilitate the insertion of multiple generators and interactive communication between the generators docked into the hubmodular enclosure 136 so that the generators would act as a single generator. - In one aspect, the hub
modular enclosure 136 comprises a modular power andcommunication backplane 149 with external and wireless communication headers to enable the removable attachment of themodules - In one aspect, the hub
modular enclosure 136 includes docking stations, or drawers, 151, herein also referred to as drawers, which are configured to slidably receive themodules FIG. 4 illustrates a partial perspective view of asurgical hub enclosure 136, and acombo generator module 145 slidably receivable in adocking station 151 of thesurgical hub enclosure 136. Adocking port 152 with power and data contacts on a rear side of thecombo generator module 145 is configured to engage acorresponding docking port 150 with power and data contacts of acorresponding docking station 151 of the hubmodular enclosure 136 as thecombo generator module 145 is slid into position within thecorresponding docking station 151 of thehub module enclosure 136. In one aspect, thecombo generator module 145 includes a bipolar, ultrasonic, and monopolar module and a smoke evacuation module integrated together into asingle housing unit 139, as illustrated inFIG. 5 . - In various aspects, the
smoke evacuation module 126 includes afluid line 154 that conveys captured/collected smoke and/or fluid away from a surgical site and to, for example, thesmoke evacuation module 126. Vacuum suction originating from thesmoke evacuation module 126 can draw the smoke into an opening of a utility conduit at the surgical site. The utility conduit, coupled to the fluid line, can be in the form of a flexible tube terminating at thesmoke evacuation module 126. The utility conduit and the fluid line define a fluid path extending toward thesmoke evacuation module 126 that is received in thehub enclosure 136. - In various aspects, the suction/
irrigation module 128 is coupled to a surgical tool comprising an aspiration fluid line and a suction fluid line. In one example, the aspiration and suction fluid lines are in the form of flexible tubes extending from the surgical site toward the suction/irrigation module 128. One or more drive systems can be configured to cause irrigation and aspiration of fluids to and from the surgical site. - In one aspect, the surgical tool includes a shaft having an end effector at a distal end thereof and at least one energy treatment associated with the end effector, an aspiration tube, and an irrigation tube. The aspiration tube can have an inlet port at a distal end thereof and the aspiration tube extends through the shaft. Similarly, an irrigation tube can extend through the shaft and can have an inlet port in proximity to the energy deliver implement. The energy deliver implement is configured to deliver ultrasonic and/or RF energy to the surgical site and is coupled to the
generator module 140 by a cable extending initially through the shaft. - The irrigation tube can be in fluid communication with a fluid source, and the aspiration tube can be in fluid communication with a vacuum source. The fluid source and/or the vacuum source can be housed in the suction/
irrigation module 128. In one example, the fluid source and/or the vacuum source can be housed in thehub enclosure 136 separately from the suction/irrigation module 128. In such example, a fluid interface can be configured to connect the suction/irrigation module 128 to the fluid source and/or the vacuum source. - In one aspect, the
modules modular enclosure 136 may include alignment features that are configured to align the docking ports of the modules into engagement with their counterparts in the docking stations of the hubmodular enclosure 136. For example, as illustrated inFIG. 4 , thecombo generator module 145 includesside brackets 155 that are configured to slidably engage withcorresponding brackets 156 of thecorresponding docking station 151 of the hubmodular enclosure 136. The brackets cooperate to guide the docking port contacts of thecombo generator module 145 into an electrical engagement with the docking port contacts of the hubmodular enclosure 136. - In some aspects, the
drawers 151 of the hubmodular enclosure 136 are the same, or substantially the same size, and the modules are adjusted in size to be received in thedrawers 151. For example, theside brackets 155 and/or 156 can be larger or smaller depending on the size of the module. In other aspects, thedrawers 151 are different in size and are each designed to accommodate a particular module. - Furthermore, the contacts of a particular module can be keyed for engagement with the contacts of a particular drawer to avoid inserting a module into a drawer with mismatching contacts.
- As illustrated in
FIG. 4 , thedocking port 150 of onedrawer 151 can be coupled to thedocking port 150 of anotherdrawer 151 through a communications link 157 to facilitate an interactive communication between the modules housed in the hubmodular enclosure 136. Thedocking ports 150 of the hubmodular enclosure 136 may alternatively, or additionally, facilitate a wireless interactive communication between the modules housed in the hubmodular enclosure 136. Any suitable wireless communication can be employed, such as for example Air Titan-Bluetooth. -
FIG. 6 illustrates individual power bus attachments for a plurality of lateral docking ports of a lateralmodular housing 160 configured to receive a plurality of modules of asurgical hub 206. The lateralmodular housing 160 is configured to laterally receive and interconnect themodules 161. Themodules 161 are slidably inserted intodocking stations 162 of lateralmodular housing 160, which includes a backplane for interconnecting themodules 161. As illustrated inFIG. 6 , themodules 161 are arranged laterally in the lateralmodular housing 160. Alternatively, themodules 161 may be arranged vertically in a lateral modular housing. -
FIG. 7 illustrates a verticalmodular housing 164 configured to receive a plurality ofmodules 165 of thesurgical hub 106. Themodules 165 are slidably inserted into docking stations, or drawers, 167 of verticalmodular housing 164, which includes a backplane for interconnecting themodules 165. Although thedrawers 167 of the verticalmodular housing 164 are arranged vertically, in certain instances, a verticalmodular housing 164 may include drawers that are arranged laterally. Furthermore, themodules 165 may interact with one another through the docking ports of the verticalmodular housing 164. In the example ofFIG. 7 , adisplay 177 is provided for displaying data relevant to the operation of themodules 165. In addition, the verticalmodular housing 164 includes amaster module 178 housing a plurality of sub-modules that are slidably received in themaster module 178. - In various aspects, the
imaging module 138 comprises an integrated video processor and a modular light source and is adapted for use with various imaging devices. In one aspect, the imaging device is comprised of a modular housing that can be assembled with a light source module and a camera module. The housing can be a disposable housing. In at least one example, the disposable housing is removably coupled to a reusable controller, a light source module, and a camera module. The light source module and/or the camera module can be selectively chosen depending on the type of surgical procedure. In one aspect, the camera module comprises a CCD sensor. In another aspect, the camera module comprises a CMOS sensor. In another aspect, the camera module is configured for scanned beam imaging. Likewise, the light source module can be configured to deliver a white light or a different light, depending on the surgical procedure. - During a surgical procedure, removing a surgical device from the surgical field and replacing it with another surgical device that includes a different camera or a different light source can be inefficient. Temporarily losing sight of the surgical field may lead to undesirable consequences. The module imaging device of the present disclosure is configured to permit the replacement of a light source module or a camera module midstream during a surgical procedure, without having to remove the imaging device from the surgical field.
- In one aspect, the imaging device comprises a tubular housing that includes a plurality of channels. A first channel is configured to slidably receive the camera module, which can be configured for a snap-fit engagement with the first channel. A second channel is configured to slidably receive the light source module, which can be configured for a snap-fit engagement with the second channel. In another example, the camera module and/or the light source module can be rotated into a final position within their respective channels. A threaded engagement can be employed in lieu of the snap-fit engagement.
- In various examples, multiple imaging devices are placed at different positions in the surgical field to provide multiple views. The
imaging module 138 can be configured to switch between the imaging devices to provide an optimal view. In various aspects, theimaging module 138 can be configured to integrate the images from the different imaging device. - Various image processors and imaging devices suitable for use with the present disclosure are described in U.S. Pat. No. 7,995,045, titled COMBINED SBI AND CONVENTIONAL IMAGE PROCESSOR, which issued on Aug. 9, 2011, which is herein incorporated by reference in its entirety. In addition, U.S. Pat. No. 7,982,776, titled SBI MOTION ARTIFACT REMOVAL APPARATUS AND METHOD, which issued on Jul. 19, 2011, which is herein incorporated by reference in its entirety, describes various systems for removing motion artifacts from image data. Such systems can be integrated with the
imaging module 138. Furthermore, U.S. Patent Application Publication No. 2011/0306840, titled CONTROLLABLE MAGNETIC SOURCE TO FIXTURE INTRACORPOREAL APPARATUS, which published on Dec. 15, 2011, and U.S. Patent Application Publication No. 2014/0243597, titled SYSTEM FOR PERFORMING A MINIMALLY INVASIVE SURGICAL PROCEDURE, which published on Aug. 28, 2014, each of which is herein incorporated by reference in its entirety. -
FIG. 8 illustrates asurgical data network 201 comprising amodular communication hub 203 configured to connect modular devices located in one or more operating theaters of a healthcare facility, or any room in a healthcare facility specially equipped for surgical operations, to a cloud-based system (e.g., thecloud 204 that may include aremote server 213 coupled to a storage device 205). In one aspect, themodular communication hub 203 comprises anetwork hub 207 and/or anetwork switch 209 in communication with a network router. Themodular communication hub 203 also can be coupled to alocal computer system 210 to provide local computer processing and data manipulation. Thesurgical data network 201 may be configured as passive, intelligent, or switching. A passive surgical data network serves as a conduit for the data, enabling it to go from one device (or segment) to another and to the cloud computing resources. An intelligent surgical data network includes additional features to enable the traffic passing through the surgical data network to be monitored and to configure each port in thenetwork hub 207 ornetwork switch 209. An intelligent surgical data network may be referred to as a manageable hub or switch. A switching hub reads the destination address of each packet and then forwards the packet to the correct port. -
Modular devices 1 a-1 n located in the operating theater may be coupled to themodular communication hub 203. Thenetwork hub 207 and/or thenetwork switch 209 may be coupled to anetwork router 211 to connect thedevices 1 a-1 n to thecloud 204 or thelocal computer system 210. Data associated with thedevices 1 a-1 n may be transferred to cloud-based computers via the router for remote data processing and manipulation. Data associated with thedevices 1 a-1 n may also be transferred to thelocal computer system 210 for local data processing and manipulation.Modular devices 2 a-2 m located in the same operating theater also may be coupled to anetwork switch 209. Thenetwork switch 209 may be coupled to thenetwork hub 207 and/or thenetwork router 211 to connect to thedevices 2 a-2 m to thecloud 204. Data associated with thedevices 2 a-2 n may be transferred to thecloud 204 via thenetwork router 211 for data processing and manipulation. Data associated with thedevices 2 a-2 m may also be transferred to thelocal computer system 210 for local data processing and manipulation. - It will be appreciated that the
surgical data network 201 may be expanded by interconnectingmultiple network hubs 207 and/or multiple network switches 209 withmultiple network routers 211. Themodular communication hub 203 may be contained in a modular control tower configured to receivemultiple devices 1 a-1 n /2 a-2 m. Thelocal computer system 210 also may be contained in a modular control tower. Themodular communication hub 203 is connected to adisplay 212 to display images obtained by some of thedevices 1 a-1 n /2 a-2 m, for example during surgical procedures. In various aspects, thedevices 1 a-1 n /2 a-2 m may include, for example, various modules such as animaging module 138 coupled to an endoscope, agenerator module 140 coupled to an energy-based surgical device, asmoke evacuation module 126, a suction/irrigation module 128, acommunication module 130, aprocessor module 132, astorage array 134, a surgical device coupled to a display, and/or a non-contact sensor module, among other modular devices that may be connected to themodular communication hub 203 of thesurgical data network 201. - In one aspect, the
surgical data network 201 may comprise a combination of network hub(s), network switch(es), and network router(s) connecting thedevices 1 a-1 n /2 a-2 m to the cloud. Any one of or all of thedevices 1 a-1 n /2 a-2 m coupled to the network hub or network switch may collect data in real time and transfer the data to cloud computers for data processing and manipulation. It will be appreciated that cloud computing relies on sharing computing resources rather than having local servers or personal devices to handle software applications. The word “cloud” may be used as a metaphor for “the Internet,” although the term is not limited as such. Accordingly, the term “cloud computing” may be used herein to refer to “a type of Internet-based computing,” where different services—such as servers, storage, and applications—are delivered to themodular communication hub 203 and/orcomputer system 210 located in the surgical theater (e.g., a fixed, mobile, temporary, or field operating room or space) and to devices connected to themodular communication hub 203 and/orcomputer system 210 through the Internet. The cloud infrastructure may be maintained by a cloud service provider. In this context, the cloud service provider may be the entity that coordinates the usage and control of thedevices 1 a-1 n /2 a-2 m located in one or more operating theaters. The cloud computing services can perform a large number of calculations based on the data gathered by smart surgical instruments, robots, and other computerized devices located in the operating theater. The hub hardware enables multiple devices or connections to be connected to a computer that communicates with the cloud computing resources and storage. - Applying cloud computer data processing techniques on the data collected by the
devices 1 a-1 n /2 a-2 m, the surgical data network provides improved surgical outcomes, reduced costs, and improved patient satisfaction. At least some of thedevices 1 a-1 n /2 a-2 m may be employed to view tissue states to assess leaks or perfusion of sealed tissue after a tissue sealing and cutting procedure. At least some of thedevices 1 a-1 n /2 a-2 m may be employed to identify pathology, such as the effects of diseases, using the cloud-based computing to examine data including images of samples of body tissue for diagnostic purposes. This includes localization and margin confirmation of tissue and phenotypes. At least some of thedevices 1 a-1 n /2 a-2 m may be employed to identify anatomical structures of the body using a variety of sensors integrated with imaging devices and techniques such as overlaying images captured by multiple imaging devices. The data gathered by thedevices 1 a-1 n /2 a-2 m, including image data, may be transferred to thecloud 204 or thelocal computer system 210 or both for data processing and manipulation including image processing and manipulation. The data may be analyzed to improve surgical procedure outcomes by determining if further treatment, such as the application of endoscopic intervention, emerging technologies, a targeted radiation, targeted intervention, and precise robotics to tissue-specific sites and conditions, may be pursued. Such data analysis may further employ outcome analytics processing, and using standardized approaches may provide beneficial feedback to either confirm surgical treatments and the behavior of the surgeon or suggest modifications to surgical treatments and the behavior of the surgeon. - In one implementation, the
operating theater devices 1 a-1 n may be connected to themodular communication hub 203 over a wired channel or a wireless channel depending on the configuration of thedevices 1 a-1 n to a network hub. Thenetwork hub 207 may be implemented, in one aspect, as a local network broadcast device that works on the physical layer of the Open System Interconnection (OSI) model. The network hub provides connectivity to thedevices 1 a-1 n located in the same operating theater network. Thenetwork hub 207 collects data in the form of packets and sends them to the router in half duplex mode. Thenetwork hub 207 does not store any media access control/internet protocol (MAC/IP) to transfer the device data. Only one of thedevices 1 a-1 n can send data at a time through thenetwork hub 207. Thenetwork hub 207 has no routing tables or intelligence regarding where to send information and broadcasts all network data across each connection and to a remote server 213 (FIG. 9 ) over thecloud 204. Thenetwork hub 207 can detect basic network errors such as collisions, but having all information broadcast to multiple ports can be a security risk and cause bottlenecks. - In another implementation, the
operating theater devices 2 a-2 m may be connected to anetwork switch 209 over a wired channel or a wireless channel. Thenetwork switch 209 works in the data link layer of the OSI model. Thenetwork switch 209 is a multicast device for connecting thedevices 2 a-2 m located in the same operating theater to the network. Thenetwork switch 209 sends data in the form of frames to thenetwork router 211 and works in full duplex mode.Multiple devices 2 a-2 m can send data at the same time through thenetwork switch 209. Thenetwork switch 209 stores and uses MAC addresses of thedevices 2 a-2 m to transfer data. - The
network hub 207 and/or thenetwork switch 209 are coupled to thenetwork router 211 for connection to thecloud 204. Thenetwork router 211 works in the network layer of the OSI model. Thenetwork router 211 creates a route for transmitting data packets received from thenetwork hub 207 and/ornetwork switch 209 to cloud-based computer resources for further processing and manipulation of the data collected by any one of or all thedevices 1 a-1 n /2 a-2 m. Thenetwork router 211 may be employed to connect two or more different networks located in different locations, such as, for example, different operating theaters of the same healthcare facility or different networks located in different operating theaters of different healthcare facilities. Thenetwork router 211 sends data in the form of packets to thecloud 204 and works in full duplex mode. Multiple devices can send data at the same time. Thenetwork router 211 uses IP addresses to transfer data. - In one example, the
network hub 207 may be implemented as a USB hub, which allows multiple USB devices to be connected to a host computer. The USB hub may expand a single USB port into several tiers so that there are more ports available to connect devices to the host system computer. Thenetwork hub 207 may include wired or wireless capabilities to receive information over a wired channel or a wireless channel. In one aspect, a wireless USB short-range, high-bandwidth wireless radio communication protocol may be employed for communication between thedevices 1 a-1 n anddevices 2 a-2 m located in the operating theater. - In other examples, the
operating theater devices 1 a-1 n /2 a-2 m may communicate to themodular communication hub 203 via Bluetooth wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz) from fixed and mobile devices and building personal area networks (PANs). In other aspects, theoperating theater devices 1 a-1 n /2 a-2 m may communicate to themodular communication hub 203 via a number of wireless or wired communication standards or protocols, including but not limited to Wi-Fi (IEEE 802.11 family), WiMAX (IEEE 802.16 family), IEEE 802.20, long-term evolution (LTE), and Ev-DO, HSPA+, HSDPA+, HSUPA+, EDGE, GSM, GPRS, CDMA, TDMA, DECT, and Ethernet derivatives thereof, as well as any other wireless and wired protocols that are designated as 3G, 4G, 5G, and beyond. The computing module may include a plurality of communication modules. For instance, a first communication module may be dedicated to shorter-range wireless communications such as Wi-Fi and Bluetooth, and a second communication module may be dedicated to longer-range wireless communications such as GPS, EDGE, GPRS, CDMA, WiMAX, LTE, Ev-DO, and others. - The
modular communication hub 203 may serve as a central connection for one or all of theoperating theater devices 1 a-1 n /2 a-2 m and handles a data type known as frames. Frames carry the data generated by thedevices 1 a-1 n /2 a-2 m. When a frame is received by themodular communication hub 203, it is amplified and transmitted to thenetwork router 211, which transfers the data to the cloud computing resources by using a number of wireless or wired communication standards or protocols, as described herein. - The
modular communication hub 203 can be used as a standalone device or be connected to compatible network hubs and network switches to form a larger network. Themodular communication hub 203 is generally easy to install, configure, and maintain, making it a good option for networking theoperating theater devices 1 a-1 n /2 a-2 m. -
FIG. 9 illustrates a computer-implemented interactivesurgical system 200. The computer-implemented interactivesurgical system 200 is similar in many respects to the computer-implemented interactivesurgical system 100. For example, the computer-implemented interactivesurgical system 200 includes one or moresurgical systems 202, which are similar in many respects to thesurgical systems 102. Eachsurgical system 202 includes at least onesurgical hub 206 in communication with acloud 204 that may include aremote server 213. In one aspect, the computer-implemented interactivesurgical system 200 comprises amodular control tower 236 connected to multiple operating theater devices such as, for example, intelligent surgical instruments, robots, and other computerized devices located in the operating theater. As shown inFIG. 10 , themodular control tower 236 comprises amodular communication hub 203 coupled to acomputer system 210. As illustrated in the example ofFIG. 9 , themodular control tower 236 is coupled to animaging module 238 that is coupled to anendoscope 239, agenerator module 240 that is coupled to anenergy device 241, asmoke evacuator module 226, a suction/irrigation module 228, acommunication module 230, aprocessor module 232, astorage array 234, a smart device/instrument 235 optionally coupled to adisplay 237, and anon-contact sensor module 242. The operating theater devices are coupled to cloud computing resources and data storage via themodular control tower 236. Arobot hub 222 also may be connected to themodular control tower 236 and to the cloud computing resources. The devices/instruments 235,visualization systems 208, among others, may be coupled to themodular control tower 236 via wired or wireless communication standards or protocols, as described herein. Themodular control tower 236 may be coupled to a hub display 215 (e.g., monitor, screen) to display and overlay images received from the imaging module, device/instrument display, and/orother visualization systems 208. The hub display also may display data received from devices connected to the modular control tower in conjunction with images and overlaid images. -
FIG. 10 illustrates asurgical hub 206 comprising a plurality of modules coupled to themodular control tower 236. Themodular control tower 236 comprises amodular communication hub 203, e.g., a network connectivity device, and acomputer system 210 to provide local processing, visualization, and imaging, for example. As shown inFIG. 10 , themodular communication hub 203 may be connected in a tiered configuration to expand the number of modules (e.g., devices) that may be connected to themodular communication hub 203 and transfer data associated with the modules to thecomputer system 210, cloud computing resources, or both. As shown inFIG. 10 , each of the network hubs/switches in themodular communication hub 203 includes three downstream ports and one upstream port. The upstream network hub/switch is connected to a processor to provide a communication connection to the cloud computing resources and alocal display 217. Communication to thecloud 204 may be made either through a wired or a wireless communication channel. - The
surgical hub 206 employs anon-contact sensor module 242 to measure the dimensions of the operating theater and generate a map of the surgical theater using either ultrasonic or laser-type non-contact measurement devices. An ultrasound-based non-contact sensor module scans the operating theater by transmitting a burst of ultrasound and receiving the echo when it bounces off the perimeter walls of an operating theater as described under the heading “Surgical Hub Spatial Awareness Within an Operating Room” in U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, the disclosure of which is herein incorporated by reference in its entirety, in which the sensor module is configured to determine the size of the operating theater and to adjust Bluetooth-pairing distance limits. A laser-based non-contact sensor module scans the operating theater by transmitting laser light pulses, receiving laser light pulses that bounce off the perimeter walls of the operating theater, and comparing the phase of the transmitted pulse to the received pulse to determine the size of the operating theater and to adjust Bluetooth pairing distance limits, for example. - The
computer system 210 comprises aprocessor 244 and anetwork interface 245. Theprocessor 244 is coupled to acommunication module 247,storage 248,memory 249,non-volatile memory 250, and input/output interface 251 via a system bus. The system bus can be any of several types of bus structure(s) including the memory bus or memory controller, a peripheral bus or external bus, and/or a local bus using any variety of available bus architectures including, but not limited to, 9-bit bus, Industrial Standard Architecture (ISA), Micro-Charmel Architecture (MSA), Extended ISA (EISA), Intelligent Drive Electronics (IDE), VESA Local Bus (VLB), Peripheral Component Interconnect (PCI), USB, Advanced Graphics Port (AGP), Personal Computer Memory Card International Association bus (PCMCIA), Small Computer Systems Interface (SCSI), or any other proprietary bus. - The
processor 244 may be any single-core or multicore processor such as those known under the trade name ARM Cortex by Texas Instruments. In one aspect, the processor may be an LM4F230H5QR ARM Cortex-M4F Processor Core, available from Texas Instruments, for example, comprising an on-chip memory of 256 KB single-cycle flash memory, or other non-volatile memory, up to 40 MHz, a prefetch buffer to improve performance above 40 MHz, a 32 KB single-cycle serial random access memory (SRAM), an internal read-only memory (ROM) loaded with StellarisWare® software, a 2 KB electrically erasable programmable read-only memory (EEPROM), and/or one or more pulse width modulation (PWM) modules, one or more quadrature encoder inputs (QEI) analogs, one or more 12-bit analog-to-digital converters (ADCs) with 12 analog input channels, details of which are available for the product datasheet. - In one aspect, the
processor 244 may comprise a safety controller comprising two controller-based families such as TMS570 and RM4x, known under the trade name Hercules ARM Cortex R4, also by Texas Instruments. The safety controller may be configured specifically for IEC 61508 and ISO 26262 safety critical applications, among others, to provide advanced integrated safety features while delivering scalable performance, connectivity, and memory options. - The system memory includes volatile memory and non-volatile memory. The basic input/output system (BIOS), containing the basic routines to transfer information between elements within the computer system, such as during start-up, is stored in non-volatile memory. For example, the non-volatile memory can include ROM, programmable ROM (PROM), electrically programmable ROM (EPROM), EEPROM, or flash memory. Volatile memory includes random-access memory (RAM), which acts as external cache memory. Moreover, RAM is available in many forms such as SRAM, dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and direct Rambus RAM (DRRAM).
- The
computer system 210 also includes removable/non-removable, volatile/non-volatile computer storage media, such as for example disk storage. The disk storage includes, but is not limited to, devices like a magnetic disk drive, floppy disk drive, tape drive, Jaz drive, Zip drive, LS-60 drive, flash memory card, or memory stick. In addition, the disk storage can include storage media separately or in combination with other storage media including, but not limited to, an optical disc drive such as a compact disc ROM device (CD-ROM), compact disc recordable drive (CD-R Drive), compact disc rewritable drive (CD-RW Drive), or a digital versatile disc ROM drive (DVD-ROM). To facilitate the connection of the disk storage devices to the system bus, a removable or non-removable interface may be employed. - It is to be appreciated that the
computer system 210 includes software that acts as an intermediary between users and the basic computer resources described in a suitable operating environment. Such software includes an operating system. The operating system, which can be stored on the disk storage, acts to control and allocate resources of the computer system. System applications take advantage of the management of resources by the operating system through program modules and program data stored either in the system memory or on the disk storage. It is to be appreciated that various components described herein can be implemented with various operating systems or combinations of operating systems. - A user enters commands or information into the
computer system 210 through input device(s) coupled to the I/O interface 251. The input devices include, but are not limited to, a pointing device such as a mouse, trackball, stylus, touch pad, keyboard, microphone, joystick, game pad, satellite dish, scanner, TV tuner card, digital camera, digital video camera, web camera, and the like. These and other input devices connect to the processor through the system bus via interface port(s). The interface port(s) include, for example, a serial port, a parallel port, a game port, and a USB. The output device(s) use some of the same types of ports as input device(s). Thus, for example, a USB port may be used to provide input to the computer system and to output information from the computer system to an output device. An output adapter is provided to illustrate that there are some output devices like monitors, displays, speakers, and printers, among other output devices that require special adapters. The output adapters include, by way of illustration and not limitation, video and sound cards that provide a means of connection between the output device and the system bus. It should be noted that other devices and/or systems of devices, such as remote computer(s), provide both input and output capabilities. - The
computer system 210 can operate in a networked environment using logical connections to one or more remote computers, such as cloud computer(s), or local computers. The remote cloud computer(s) can be a personal computer, server, router, network PC, workstation, microprocessor-based appliance, peer device, or other common network node, and the like, and typically includes many or all of the elements described relative to the computer system. For purposes of brevity, only a memory storage device is illustrated with the remote computer(s). The remote computer(s) is logically connected to the computer system through a network interface and then physically connected via a communication connection. The network interface encompasses communication networks such as local area networks (LANs) and wide area networks (WANs). LAN technologies include Fiber Distributed Data Interface (FDDI), Copper Distributed Data Interface (CDDI), Ethernet/IEEE 802.3, Token Ring/IEEE 802.5 and the like. WAN technologies include, but are not limited to, point-to-point links, circuit-switching networks like Integrated Services Digital Networks (ISDN) and variations thereon, packet-switching networks, and Digital Subscriber Lines (DSL). - In various aspects, the
computer system 210 ofFIG. 10 , theimaging module 238 and/orvisualization system 208, and/or theprocessor module 232 ofFIGS. 9-10 , may comprise an image processor, image processing engine, media processor, or any specialized digital signal processor (DSP) used for the processing of digital images. The image processor may employ parallel computing with single instruction, multiple data (SIMD) or multiple instruction, multiple data (MIMD) technologies to increase speed and efficiency. The digital image processing engine can perform a range of tasks. The image processor may be a system on a chip with multicore processor architecture. - The communication connection(s) refers to the hardware/software employed to connect the network interface to the bus. While the communication connection is shown for illustrative clarity inside the computer system, it can also be external to the
computer system 210. The hardware/software necessary for connection to the network interface includes, for illustrative purposes only, internal and external technologies such as modems, including regular telephone-grade modems, cable modems, and DSL modems, ISDN adapters, and Ethernet cards. -
FIG. 11 illustrates a functional block diagram of one aspect of aUSB network hub 300 device, according to one aspect of the present disclosure. In the illustrated aspect, the USBnetwork hub device 300 employs a TUSB2036 integrated circuit hub by Texas Instruments. TheUSB network hub 300 is a CMOS device that provides an upstreamUSB transceiver port 302 and up to three downstreamUSB transceiver ports USB transceiver port 302 is a differential root data port comprising a differential data minus (DM0) input paired with a differential data plus (DP0) input. The three downstreamUSB transceiver ports - The
USB network hub 300 device is implemented with a digital state machine instead of a microcontroller, and no firmware programming is required. Fully compliant USB transceivers are integrated into the circuit for the upstreamUSB transceiver port 302 and all downstreamUSB transceiver ports USB transceiver ports USB network hub 300 device may be configured either in bus-powered or self-powered mode and includes ahub power logic 312 to manage power. - The
USB network hub 300 device includes a serial interface engine 310 (SIE). TheSIE 310 is the front end of theUSB network hub 300 hardware and handles most of the protocol described in chapter 8 of the USB specification. TheSIE 310 typically comprehends signaling up to the transaction level. The functions that it handles could include: packet recognition, transaction sequencing, SOP, EOP, RESET, and RESUME signal detection/generation, clock/data separation, non-return-to-zero invert (NRZI) data encoding/decoding and bit-stuffing, CRC generation and checking (token and data), packet ID (PID) generation and checking/decoding, and/or serial-parallel/parallel-serial conversion. The 310 receives aclock input 314 and is coupled to a suspend/resume logic andframe timer 316 circuit and ahub repeater circuit 318 to control communication between the upstreamUSB transceiver port 302 and the downstreamUSB transceiver ports port logic circuits SIE 310 is coupled to acommand decoder 326 viaSIE interface logic 328 to control commands from a serial EEPROM via aserial EEPROM interface 330. - In various aspects, the
USB network hub 300 can connect 127 functions configured in up to six logical layers (tiers) to a single computer. Further, theUSB network hub 300 can connect to all peripherals using a standardized four-wire cable that provides both communication and power distribution. The power configurations are bus-powered and self-powered modes. TheUSB network hub 300 may be configured to support four modes of power management: a bus-powered hub, with either individual-port power management or ganged-port power management, and the self-powered hub, with either individual-port power management or ganged-port power management. In one aspect, using a USB cable, theUSB network hub 300, the upstreamUSB transceiver port 302 is plugged into a USB host controller, and the downstreamUSB transceiver ports - Surgical Instrument Hardware
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FIG. 12 illustrates a logic diagram of acontrol system 470 of a surgical instrument or tool in accordance with one or more aspects of the present disclosure. Thesystem 470 comprises a control circuit. The control circuit includes amicrocontroller 461 comprising aprocessor 462 and amemory 468. One or more ofsensors processor 462. Amotor 482, driven by amotor driver 492, operably couples a longitudinally movable displacement member to drive the I-beam knife element. Atracking system 480 is configured to determine the position of the longitudinally movable displacement member. The position information is provided to theprocessor 462, which can be programmed or configured to determine the position of the longitudinally movable drive member as well as the position of a firing member, firing bar, and I-beam knife element. Additional motors may be provided at the tool driver interface to control I-beam firing, closure tube travel, shaft rotation, and articulation. Adisplay 473 displays a variety of operating conditions of the instruments and may include touch screen functionality for data input. Information displayed on thedisplay 473 may be overlaid with images acquired via endoscopic imaging modules. - In one aspect, the
microcontroller 461 may be any single-core or multicore processor such as those known under the trade name ARM Cortex by Texas Instruments. In one aspect, themain microcontroller 461 may be an LM4F230H5QR ARM Cortex-M4F Processor Core, available from Texas Instruments, for example, comprising an on-chip memory of 256 KB single-cycle flash memory, or other non-volatile memory, up to 40 MHz, a prefetch buffer to improve performance above 40 MHz, a 32 KB single-cycle SRAM, and internal ROM loaded with StellarisWare® software, a 2 KB EEPROM, one or more PWM modules, one or more QEI analogs, and/or one or more 12-bit ADCs with 12 analog input channels, details of which are available for the product datasheet. - In one aspect, the
microcontroller 461 may comprise a safety controller comprising two controller-based families such as TMS570 and RM4x, known under the trade name Hercules ARM Cortex R4, also by Texas Instruments. The safety controller may be configured specifically for IEC 61508 and ISO 26262 safety critical applications, among others, to provide advanced integrated safety features while delivering scalable performance, connectivity, and memory options. - The
microcontroller 461 may be programmed to perform various functions such as precise control over the speed and position of the knife and articulation systems. In one aspect, themicrocontroller 461 includes aprocessor 462 and amemory 468. Theelectric motor 482 may be a brushed direct current (DC) motor with a gearbox and mechanical links to an articulation or knife system. In one aspect, amotor driver 492 may be an A3941 available from Allegro Microsystems, Inc. Other motor drivers may be readily substituted for use in thetracking system 480 comprising an absolute positioning system. A detailed description of an absolute positioning system is described in U.S. Patent Application Publication No. 2017/0296213, titled SYSTEMS AND METHODS FOR CONTROLLING A SURGICAL STAPLING AND CUTTING INSTRUMENT, which published on Oct. 19, 2017, which is herein incorporated by reference in its entirety. - The
microcontroller 461 may be programmed to provide precise control over the speed and position of displacement members and articulation systems. Themicrocontroller 461 may be configured to compute a response in the software of themicrocontroller 461. The computed response is compared to a measured response of the actual system to obtain an “observed” response, which is used for actual feedback decisions. The observed response is a favorable, tuned value that balances the smooth, continuous nature of the simulated response with the measured response, which can detect outside influences on the system. - In one aspect, the
motor 482 may be controlled by themotor driver 492 and can be employed by the firing system of the surgical instrument or tool. In various forms, themotor 482 may be a brushed DC driving motor having a maximum rotational speed of approximately 25,000 RPM. In other arrangements, themotor 482 may include a brushless motor, a cordless motor, a synchronous motor, a stepper motor, or any other suitable electric motor. Themotor driver 492 may comprise an H-bridge driver comprising field-effect transistors (FETs), for example. Themotor 482 can be powered by a power assembly releasably mounted to the handle assembly or tool housing for supplying control power to the surgical instrument or tool. The power assembly may comprise a battery which may include a number of battery cells connected in series that can be used as the power source to power the surgical instrument or tool. In certain circumstances, the battery cells of the power assembly may be replaceable and/or rechargeable. In at least one example, the battery cells can be lithium-ion batteries which can be couplable to and separable from the power assembly. - The
motor driver 492 may be an A3941 available from Allegro Microsystems, Inc. TheA3941 492 is a full-bridge controller for use with external N-channel power metal-oxide semiconductor field-effect transistors (MOSFETs) specifically designed for inductive loads, such as brush DC motors. Thedriver 492 comprises a unique charge pump regulator that provides full (>10 V) gate drive for battery voltages down to 7 V and allows the A3941 to operate with a reduced gate drive, down to 5.5 V. A bootstrap capacitor may be employed to provide the above battery supply voltage required for N-channel MOSFETs. An internal charge pump for the high-side drive allows DC (100% duty cycle) operation. The full bridge can be driven in fast or slow decay modes using diode or synchronous rectification. In the slow decay mode, current recirculation can be through the high-side or the lowside FETs. The power FETs are protected from shoot-through by resistor-adjustable dead time. Integrated diagnostics provide indications of undervoltage, overtemperature, and power bridge faults and can be configured to protect the power MOSFETs under most short circuit conditions. Other motor drivers may be readily substituted for use in thetracking system 480 comprising an absolute positioning system. - The
tracking system 480 comprises a controlled motor drive circuit arrangement comprising aposition sensor 472 according to one aspect of this disclosure. Theposition sensor 472 for an absolute positioning system provides a unique position signal corresponding to the location of a displacement member. In one aspect, the displacement member represents a longitudinally movable drive member comprising a rack of drive teeth for meshing engagement with a corresponding drive gear of a gear reducer assembly. In other aspects, the displacement member represents the firing member, which could be adapted and configured to include a rack of drive teeth. In yet another aspect, the displacement member represents a firing bar or the I-beam, each of which can be adapted and configured to include a rack of drive teeth. Accordingly, as used herein, the term displacement member is used generically to refer to any movable member of the surgical instrument or tool such as the drive member, the firing member, the firing bar, the I-beam, or any element that can be displaced. In one aspect, the longitudinally movable drive member is coupled to the firing member, the firing bar, and the I-beam. Accordingly, the absolute positioning system can, in effect, track the linear displacement of the I-beam by tracking the linear displacement of the longitudinally movable drive member. In various other aspects, the displacement member may be coupled to anyposition sensor 472 suitable for measuring linear displacement. Thus, the longitudinally movable drive member, the firing member, the firing bar, or the I-beam, or combinations thereof, may be coupled to any suitable linear displacement sensor. Linear displacement sensors may include contact or non-contact displacement sensors. Linear displacement sensors may comprise linear variable differential transformers (LVDT), differential variable reluctance transducers (DVRT), a slide potentiometer, a magnetic sensing system comprising a movable magnet and a series of linearly arranged Hall effect sensors, a magnetic sensing system comprising a fixed magnet and a series of movable, linearly arranged Hall effect sensors, an optical sensing system comprising a movable light source and a series of linearly arranged photo diodes or photo detectors, an optical sensing system comprising a fixed light source and a series of movable linearly, arranged photo diodes or photo detectors, or any combination thereof. - The
electric motor 482 can include a rotatable shaft that operably interfaces with a gear assembly that is mounted in meshing engagement with a set, or rack, of drive teeth on the displacement member. A sensor element may be operably coupled to a gear assembly such that a single revolution of theposition sensor 472 element corresponds to some linear longitudinal translation of the displacement member. An arrangement of gearing and sensors can be connected to the linear actuator, via a rack and pinion arrangement, or a rotary actuator, via a spur gear or other connection. A power source supplies power to the absolute positioning system and an output indicator may display the output of the absolute positioning system. The displacement member represents the longitudinally movable drive member comprising a rack of drive teeth formed thereon for meshing engagement with a corresponding drive gear of the gear reducer assembly. The displacement member represents the longitudinally movable firing member, firing bar, I-beam, or combinations thereof. - A single revolution of the sensor element associated with the
position sensor 472 is equivalent to a longitudinal linear displacement dl of the of the displacement member, where dl is the longitudinal linear distance that the displacement member moves from point “a” to point “b” after a single revolution of the sensor element coupled to the displacement member. The sensor arrangement may be connected via a gear reduction that results in theposition sensor 472 completing one or more revolutions for the full stroke of the displacement member. Theposition sensor 472 may complete multiple revolutions for the full stroke of the displacement member. - A series of switches, where n is an integer greater than one, may be employed alone or in combination with a gear reduction to provide a unique position signal for more than one revolution of the
position sensor 472. The state of the switches are fed back to themicrocontroller 461 that applies logic to determine a unique position signal corresponding to the longitudinal linear displacement d1+d2+ . . . dn of the displacement member. The output of theposition sensor 472 is provided to themicrocontroller 461. Theposition sensor 472 of the sensor arrangement may comprise a magnetic sensor, an analog rotary sensor like a potentiometer, or an array of analog Hall-effect elements, which output a unique combination of position signals or values. - The
position sensor 472 may comprise any number of magnetic sensing elements, such as, for example, magnetic sensors classified according to whether they measure the total magnetic field or the vector components of the magnetic field. The techniques used to produce both types of magnetic sensors encompass many aspects of physics and electronics. The technologies used for magnetic field sensing include search coil, fluxgate, optically pumped, nuclear precession, SQUID, Hall-effect, anisotropic magnetoresistance, giant magnetoresistance, magnetic tunnel junctions, giant magnetoimpedance, magnetostrictive/piezoelectric composites, magnetodiode, magnetotransistor, fiber-optic, magneto-optic, and microelectromechanical systems-based magnetic sensors, among others. - In one aspect, the
position sensor 472 for thetracking system 480 comprising an absolute positioning system comprises a magnetic rotary absolute positioning system. Theposition sensor 472 may be implemented as an AS5055EQFT single-chip magnetic rotary position sensor available from Austria Microsystems, AG. Theposition sensor 472 is interfaced with themicrocontroller 461 to provide an absolute positioning system. Theposition sensor 472 is a low-voltage and low-power component and includes four Hall-effect elements in an area of theposition sensor 472 that is located above a magnet. A high-resolution ADC and a smart power management controller are also provided on the chip. A coordinate rotation digital computer (CORDIC) processor, also known as the digit-by-digit method and Volder's algorithm, is provided to implement a simple and efficient algorithm to calculate hyperbolic and trigonometric functions that require only addition, subtraction, bitshift, and table lookup operations. The angle position, alarm bits, and magnetic field information are transmitted over a standard serial communication interface, such as a serial peripheral interface (SPI) interface, to themicrocontroller 461. Theposition sensor 472 provides 12 or 14 bits of resolution. Theposition sensor 472 may be an AS5055 chip provided in a small QFN 16-pin 4×4×0.85 mm package. - The
tracking system 480 comprising an absolute positioning system may comprise and/or be programmed to implement a feedback controller, such as a PID, state feedback, and adaptive controller. A power source converts the signal from the feedback controller into a physical input to the system: in this case the voltage. Other examples include a PWM of the voltage, current, and force. Other sensor(s) may be provided to measure physical parameters of the physical system in addition to the position measured by theposition sensor 472. In some aspects, the other sensor(s) can include sensor arrangements such as those described in U.S. Pat. No. 9,345,481, titled STAPLE CARTRIDGE TISSUE THICKNESS SENSOR SYSTEM, which issued on May 24, 2016, which is herein incorporated by reference in its entirety; U.S. Patent Application Publication No. 2014/0263552, titled STAPLE CARTRIDGE TISSUE THICKNESS SENSOR SYSTEM, which published on Sep. 18, 2014, which is herein incorporated by reference in its entirety; and U.S. patent application Ser. No. 15/628,175, titled TECHNIQUES FOR ADAPTIVE CONTROL OF MOTOR VELOCITY OF A SURGICAL STAPLING AND CUTTING INSTRUMENT, filed Jun. 20, 2017, which is herein incorporated by reference in its entirety. In a digital signal processing system, an absolute positioning system is coupled to a digital data acquisition system where the output of the absolute positioning system will have a finite resolution and sampling frequency. The absolute positioning system may comprise a compare-and-combine circuit to combine a computed response with a measured response using algorithms, such as a weighted average and a theoretical control loop, that drive the computed response towards the measured response. The computed response of the physical system takes into account properties like mass, inertial, viscous friction, inductance resistance, etc., to predict what the states and outputs of the physical system will be by knowing the input. - The absolute positioning system provides an absolute position of the displacement member upon power-up of the instrument, without retracting or advancing the displacement member to a reset (zero or home) position as may be required with conventional rotary encoders that merely count the number of steps forwards or backwards that the
motor 482 has taken to infer the position of a device actuator, drive bar, knife, or the like. - A
sensor 474, such as, for example, a strain gauge or a micro-strain gauge, is configured to measure one or more parameters of the end effector, such as, for example, the amplitude of the strain exerted on the anvil during a clamping operation, which can be indicative of the closure forces applied to the anvil. The measured strain is converted to a digital signal and provided to theprocessor 462. Alternatively, or in addition to thesensor 474, asensor 476, such as, for example, a load sensor, can measure the closure force applied by the closure drive system to the anvil. Thesensor 476, such as, for example, a load sensor, can measure the firing force applied to an I-beam in a firing stroke of the surgical instrument or tool. The I-beam is configured to engage a wedge sled, which is configured to upwardly cam staple drivers to force out staples into deforming contact with an anvil. The I-beam also includes a sharpened cutting edge that can be used to sever tissue as the I-beam is advanced distally by the firing bar. Alternatively, acurrent sensor 478 can be employed to measure the current drawn by themotor 482. The force required to advance the firing member can correspond to the current drawn by themotor 482, for example. The measured force is converted to a digital signal and provided to theprocessor 462. - In one form, the
strain gauge sensor 474 can be used to measure the force applied to the tissue by the end effector. A strain gauge can be coupled to the end effector to measure the force on the tissue being treated by the end effector. A system for measuring forces applied to the tissue grasped by the end effector comprises astrain gauge sensor 474, such as, for example, a micro-strain gauge, that is configured to measure one or more parameters of the end effector, for example. In one aspect, thestrain gauge sensor 474 can measure the amplitude or magnitude of the strain exerted on a jaw member of an end effector during a clamping operation, which can be indicative of the tissue compression. The measured strain is converted to a digital signal and provided to aprocessor 462 of themicrocontroller 461. Aload sensor 476 can measure the force used to operate the knife element, for example, to cut the tissue captured between the anvil and the staple cartridge. A magnetic field sensor can be employed to measure the thickness of the captured tissue. The measurement of the magnetic field sensor also may be converted to a digital signal and provided to theprocessor 462. - The measurements of the tissue compression, the tissue thickness, and/or the force required to close the end effector on the tissue, as respectively measured by the
sensors microcontroller 461 to characterize the selected position of the firing member and/or the corresponding value of the speed of the firing member. In one instance, amemory 468 may store a technique, an equation, and/or a lookup table which can be employed by themicrocontroller 461 in the assessment. - The
control system 470 of the surgical instrument or tool also may comprise wired or wireless communication circuits to communicate with the modular communication hub as shown inFIGS. 8-11 . -
FIG. 13 illustrates acontrol circuit 500 configured to control aspects of the surgical instrument or tool according to one aspect of this disclosure. Thecontrol circuit 500 can be configured to implement various processes described herein. Thecontrol circuit 500 may comprise a microcontroller comprising one or more processors 502 (e.g., microprocessor, microcontroller) coupled to at least onememory circuit 504. Thememory circuit 504 stores machine-executable instructions that, when executed by theprocessor 502, cause theprocessor 502 to execute machine instructions to implement various processes described herein. Theprocessor 502 may be any one of a number of single-core or multicore processors known in the art. Thememory circuit 504 may comprise volatile and non-volatile storage media. Theprocessor 502 may include aninstruction processing unit 506 and anarithmetic unit 508. The instruction processing unit may be configured to receive instructions from thememory circuit 504 of this disclosure. -
FIG. 14 illustrates acombinational logic circuit 510 configured to control aspects of the surgical instrument or tool according to one aspect of this disclosure. Thecombinational logic circuit 510 can be configured to implement various processes described herein. Thecombinational logic circuit 510 may comprise a finite state machine comprising acombinational logic 512 configured to receive data associated with the surgical instrument or tool at aninput 514, process the data by thecombinational logic 512, and provide anoutput 516. -
FIG. 15 illustrates asequential logic circuit 520 configured to control aspects of the surgical instrument or tool according to one aspect of this disclosure. Thesequential logic circuit 520 or thecombinational logic 522 can be configured to implement various processes described herein. Thesequential logic circuit 520 may comprise a finite state machine. Thesequential logic circuit 520 may comprise acombinational logic 522, at least onememory circuit 524, and aclock 529, for example. The at least onememory circuit 524 can store a current state of the finite state machine. In certain instances, thesequential logic circuit 520 may be synchronous or asynchronous. Thecombinational logic 522 is configured to receive data associated with the surgical instrument or tool from aninput 526, process the data by thecombinational logic 522, and provide anoutput 528. In other aspects, the circuit may comprise a combination of a processor (e.g.,processor 502,FIG. 13 ) and a finite state machine to implement various processes herein. In other aspects, the finite state machine may comprise a combination of a combinational logic circuit (e.g.,combinational logic circuit 510,FIG. 14 ) and thesequential logic circuit 520. -
FIG. 16 illustrates a surgical instrument or tool comprising a plurality of motors which can be activated to perform various functions. In certain instances, a first motor can be activated to perform a first function, a second motor can be activated to perform a second function, a third motor can be activated to perform a third function, a fourth motor can be activated to perform a fourth function, and so on. In certain instances, the plurality of motors of roboticsurgical instrument 600 can be individually activated to cause firing, closure, and/or articulation motions in the end effector. The firing, closure, and/or articulation motions can be transmitted to the end effector through a shaft assembly, for example. - In certain instances, the surgical instrument system or tool may include a firing
motor 602. The firingmotor 602 may be operably coupled to a firingmotor drive assembly 604 which can be configured to transmit firing motions, generated by themotor 602 to the end effector, in particular to displace the I-beam element. In certain instances, the firing motions generated by themotor 602 may cause the staples to be deployed from the staple cartridge into tissue captured by the end effector and/or the cutting edge of the I-beam element to be advanced to cut the captured tissue, for example. The I-beam element may be retracted by reversing the direction of themotor 602. - In certain instances, the surgical instrument or tool may include a
closure motor 603. Theclosure motor 603 may be operably coupled to a closuremotor drive assembly 605 which can be configured to transmit closure motions, generated by themotor 603 to the end effector, in particular to displace a closure tube to close the anvil and compress tissue between the anvil and the staple cartridge. The closure motions may cause the end effector to transition from an open configuration to an approximated configuration to capture tissue, for example. The end effector may be transitioned to an open position by reversing the direction of themotor 603. - In certain instances, the surgical instrument or tool may include one or
more articulation motors motors motor drive assemblies motors - As described above, the surgical instrument or tool may include a plurality of motors which may be configured to perform various independent functions. In certain instances, the plurality of motors of the surgical instrument or tool can be individually or separately activated to perform one or more functions while the other motors remain inactive. For example, the
articulation motors motor 602 remains inactive. Alternatively, the firingmotor 602 can be activated to fire the plurality of staples, and/or to advance the cutting edge, while the articulation motor 606 remains inactive. Furthermore theclosure motor 603 may be activated simultaneously with the firingmotor 602 to cause the closure tube and the I-beam element to advance distally as described in more detail hereinbelow. - In certain instances, the surgical instrument or tool may include a
common control module 610 which can be employed with a plurality of motors of the surgical instrument or tool. In certain instances, thecommon control module 610 may accommodate one of the plurality of motors at a time. For example, thecommon control module 610 can be couplable to and separable from the plurality of motors of the robotic surgical instrument individually. In certain instances, a plurality of the motors of the surgical instrument or tool may share one or more common control modules such as thecommon control module 610. In certain instances, a plurality of motors of the surgical instrument or tool can be individually and selectively engaged with thecommon control module 610. In certain instances, thecommon control module 610 can be selectively switched from interfacing with one of a plurality of motors of the surgical instrument or tool to interfacing with another one of the plurality of motors of the surgical instrument or tool. - In at least one example, the
common control module 610 can be selectively switched between operable engagement with thearticulation motors motor 602 or theclosure motor 603. In at least one example, as illustrated inFIG. 16 , aswitch 614 can be moved or transitioned between a plurality of positions and/or states. In afirst position 616, theswitch 614 may electrically couple thecommon control module 610 to the firingmotor 602; in a second position 617, theswitch 614 may electrically couple thecommon control module 610 to theclosure motor 603; in athird position 618 a, theswitch 614 may electrically couple thecommon control module 610 to thefirst articulation motor 606 a ; and in afourth position 618 b, theswitch 614 may electrically couple thecommon control module 610 to thesecond articulation motor 606 b, for example. In certain instances, separatecommon control modules 610 can be electrically coupled to the firingmotor 602, theclosure motor 603, and the articulations motor 606 a, 606 b at the same time. In certain instances, theswitch 614 may be a mechanical switch, an electromechanical switch, a solid-state switch, or any suitable switching mechanism. - Each of the
motors - In various instances, as illustrated in
FIG. 16 , thecommon control module 610 may comprise amotor driver 626 which may comprise one or more H-Bridge FETs. Themotor driver 626 may modulate the power transmitted from apower source 628 to a motor coupled to thecommon control module 610 based on input from a microcontroller 620 (the “controller”), for example. In certain instances, themicrocontroller 620 can be employed to determine the current drawn by the motor, for example, while the motor is coupled to thecommon control module 610, as described above. - In certain instances, the
microcontroller 620 may include a microprocessor 622 (the “processor”) and one or more non-transitory computer-readable mediums or memory units 624 (the “memory”). In certain instances, thememory 624 may store various program instructions, which when executed may cause theprocessor 622 to perform a plurality of functions and/or calculations described herein. In certain instances, one or more of thememory units 624 may be coupled to theprocessor 622, for example. - In certain instances, the
power source 628 can be employed to supply power to themicrocontroller 620, for example. In certain instances, thepower source 628 may comprise a battery (or “battery pack” or “power pack”), such as a lithium-ion battery, for example. In certain instances, the battery pack may be configured to be releasably mounted to a handle for supplying power to thesurgical instrument 600. A number of battery cells connected in series may be used as thepower source 628. In certain instances, thepower source 628 may be replaceable and/or rechargeable, for example. - In various instances, the
processor 622 may control themotor driver 626 to control the position, direction of rotation, and/or velocity of a motor that is coupled to thecommon control module 610. In certain instances, theprocessor 622 can signal themotor driver 626 to stop and/or disable a motor that is coupled to thecommon control module 610. It should be understood that the term “processor” as used herein includes any suitable microprocessor, microcontroller, or other basic computing device that incorporates the functions of a computer's central processing unit (CPU) on an integrated circuit or, at most, a few integrated circuits. The processor is a multipurpose, programmable device that accepts digital data as input, processes it according to instructions stored in its memory, and provides results as output. It is an example of sequential digital logic, as it has internal memory. Processors operate on numbers and symbols represented in the binary numeral system. - In one instance, the
processor 622 may be any single-core or multicore processor such as those known under the trade name ARM Cortex by Texas Instruments. In certain instances, themicrocontroller 620 may be an LM 4F230H5QR, available from Texas Instruments, for example. In at least one example, the Texas Instruments LM4F230H5QR is an ARM Cortex-M4F Processor Core comprising an on-chip memory of 256 KB single-cycle flash memory, or other non-volatile memory, up to 40 MHz, a prefetch buffer to improve performance above 40 MHz, a 32 KB single-cycle SRAM, an internal ROM loaded with StellarisWare® software, a 2 KB EEPROM, one or more PWM modules, one or more QEI analogs, one or more 12-bit ADCs with 12 analog input channels, among other features that are readily available for the product datasheet. Other microcontrollers may be readily substituted for use with the module 4410. Accordingly, the present disclosure should not be limited in this context. - In certain instances, the
memory 624 may include program instructions for controlling each of the motors of thesurgical instrument 600 that are couplable to thecommon control module 610. For example, thememory 624 may include program instructions for controlling the firingmotor 602, theclosure motor 603, and thearticulation motors processor 622 to control the firing, closure, and articulation functions in accordance with inputs from algorithms or control programs of the surgical instrument or tool. - In certain instances, one or more mechanisms and/or sensors such as, for example,
sensors 630 can be employed to alert theprocessor 622 to the program instructions that should be used in a particular setting. For example, thesensors 630 may alert theprocessor 622 to use the program instructions associated with firing, closing, and articulating the end effector. In certain instances, thesensors 630 may comprise position sensors which can be employed to sense the position of theswitch 614, for example. Accordingly, theprocessor 622 may use the program instructions associated with firing the I-beam of the end effector upon detecting, through thesensors 630 for example, that theswitch 614 is in thefirst position 616; theprocessor 622 may use the program instructions associated with closing the anvil upon detecting, through thesensors 630 for example, that theswitch 614 is in the second position 617; and theprocessor 622 may use the program instructions associated with articulating the end effector upon detecting, through thesensors 630 for example, that theswitch 614 is in the third orfourth position -
FIG. 17 is a schematic diagram of a roboticsurgical instrument 700 configured to operate a surgical tool described herein according to one aspect of this disclosure. The roboticsurgical instrument 700 may be programmed or configured to control distal/proximal translation of a displacement member, distal/proximal displacement of a closure tube, shaft rotation, and articulation, either with single or multiple articulation drive links. In one aspect, thesurgical instrument 700 may be programmed or configured to individually control a firing member, a closure member, a shaft member, and/or one or more articulation members. Thesurgical instrument 700 comprises acontrol circuit 710 configured to control motor-driven firing members, closure members, shaft members, and/or one or more articulation members. - In one aspect, the robotic
surgical instrument 700 comprises acontrol circuit 710 configured to control ananvil 716 and an I-beam 714 (including a sharp cutting edge) portion of anend effector 702, a removablestaple cartridge 718, ashaft 740, and one ormore articulation members position sensor 734 may be configured to provide position feedback of the I-beam 714 to thecontrol circuit 710.Other sensors 738 may be configured to provide feedback to thecontrol circuit 710. A timer/counter 731 provides timing and counting information to thecontrol circuit 710. Anenergy source 712 may be provided to operate the motors 704 a-704 e, and acurrent sensor 736 provides motor current feedback to thecontrol circuit 710. The motors 704 a-704 e can be operated individually by thecontrol circuit 710 in an open-loop or closed-loop feedback control. - In one aspect, the
control circuit 710 may comprise one or more microcontrollers, microprocessors, or other suitable processors for executing instructions that cause the processor or processors to perform one or more tasks. In one aspect, a timer/counter 731 provides an output signal, such as the elapsed time or a digital count, to thecontrol circuit 710 to correlate the position of the I-beam 714 as determined by theposition sensor 734 with the output of the timer/counter 731 such that thecontrol circuit 710 can determine the position of the I-beam 714 at a specific time (t) relative to a starting position or the time (t) when the I-beam 714 is at a specific position relative to a starting position. The timer/counter 731 may be configured to measure elapsed time, count external events, or time external events. - In one aspect, the
control circuit 710 may be programmed to control functions of theend effector 702 based on one or more tissue conditions. Thecontrol circuit 710 may be programmed to sense tissue conditions, such as thickness, either directly or indirectly, as described herein. Thecontrol circuit 710 may be programmed to select a firing control program or closure control program based on tissue conditions. A firing control program may describe the distal motion of the displacement member. Different firing control programs may be selected to better treat different tissue conditions. For example, when thicker tissue is present, thecontrol circuit 710 may be programmed to translate the displacement member at a lower velocity and/or with lower power. When thinner tissue is present, thecontrol circuit 710 may be programmed to translate the displacement member at a higher velocity and/or with higher power. A closure control program may control the closure force applied to the tissue by theanvil 716. Other control programs control the rotation of theshaft 740 and thearticulation members - In one aspect, the
control circuit 710 may generate motor set point signals. The motor set point signals may be provided to various motor controllers 708 a-708 e. The motor controllers 708 a-708 e may comprise one or more circuits configured to provide motor drive signals to the motors 704 a-704 e to drive the motors 704 a-704 e as described herein. In some examples, the motors 704 a-704 e may be brushed DC electric motors. For example, the velocity of the motors 704 a-704 e may be proportional to the respective motor drive signals. In some examples, the motors 704 a-704 e may be brushless DC electric motors, and the respective motor drive signals may comprise a PWM signal provided to one or more stator windings of the motors 704 a-704 e. Also, in some examples, the motor controllers 708 a-708 e may be omitted and thecontrol circuit 710 may generate the motor drive signals directly. - In one aspect, the
control circuit 710 may initially operate each of the motors 704 a-704 e in an open-loop configuration for a first open-loop portion of a stroke of the displacement member. Based on the response of the roboticsurgical instrument 700 during the open-loop portion of the stroke, thecontrol circuit 710 may select a firing control program in a closed-loop configuration. The response of the instrument may include a translation distance of the displacement member during the open-loop portion, a time elapsed during the open-loop portion, the energy provided to one of the motors 704 a-704 e during the open-loop portion, a sum of pulse widths of a motor drive signal, etc. After the open-loop portion, thecontrol circuit 710 may implement the selected firing control program for a second portion of the displacement member stroke. For example, during a closed-loop portion of the stroke, thecontrol circuit 710 may modulate one of the motors 704 a-704 e based on translation data describing a position of the displacement member in a closed-loop manner to translate the displacement member at a constant velocity. - In one aspect, the motors 704 a-704 e may receive power from an
energy source 712. Theenergy source 712 may be a DC power supply driven by a main alternating current power source, a battery, a super capacitor, or any other suitable energy source. The motors 704 a-704 e may be mechanically coupled to individual movable mechanical elements such as the I-beam 714,anvil 716,shaft 740,articulation 742 a, andarticulation 742 b via respective transmissions 706 a-706 e. The transmissions 706 a-706 e may include one or more gears or other linkage components to couple the motors 704 a-704 e to movable mechanical elements. Aposition sensor 734 may sense a position of the I-beam 714. Theposition sensor 734 may be or include any type of sensor that is capable of generating position data that indicate a position of the I-beam 714. In some examples, theposition sensor 734 may include an encoder configured to provide a series of pulses to thecontrol circuit 710 as the I-beam 714 translates distally and proximally. Thecontrol circuit 710 may track the pulses to determine the position of the I-beam 714. Other suitable position sensors may be used, including, for example, a proximity sensor. Other types of position sensors may provide other signals indicating motion of the I-beam 714. Also, in some examples, theposition sensor 734 may be omitted. Where any of the motors 704 a-704 e is a stepper motor, thecontrol circuit 710 may track the position of the I-beam 714 by aggregating the number and direction of steps that the motor 704 has been instructed to execute. Theposition sensor 734 may be located in theend effector 702 or at any other portion of the instrument. The outputs of each of the motors 704 a-704 e include a torque sensor 744 a-744 e to sense force and have an encoder to sense rotation of the drive shaft. - In one aspect, the
control circuit 710 is configured to drive a firing member such as the I-beam 714 portion of theend effector 702. Thecontrol circuit 710 provides a motor set point to amotor control 708 a, which provides a drive signal to themotor 704 a. The output shaft of themotor 704 a is coupled to a torque sensor 744 a. The torque sensor 744 a is coupled to atransmission 706 a which is coupled to the I-beam 714. Thetransmission 706 a comprises movable mechanical elements such as rotating elements and a firing member to control the movement of the I-beam 714 distally and proximally along a longitudinal axis of theend effector 702. In one aspect, themotor 704 a may be coupled to the knife gear assembly, which includes a knife gear reduction set that includes a first knife drive gear and a second knife drive gear. A torque sensor 744 a provides a firing force feedback signal to thecontrol circuit 710. The firing force signal represents the force required to fire or displace the I-beam 714. Aposition sensor 734 may be configured to provide the position of the I-beam 714 along the firing stroke or the position of the firing member as a feedback signal to thecontrol circuit 710. Theend effector 702 may includeadditional sensors 738 configured to provide feedback signals to thecontrol circuit 710. When ready to use, thecontrol circuit 710 may provide a firing signal to themotor control 708 a. In response to the firing signal, themotor 704 a may drive the firing member distally along the longitudinal axis of theend effector 702 from a proximal stroke start position to a stroke end position distal to the stroke start position. As the firing member translates distally, an I-beam 714, with a cutting element positioned at a distal end, advances distally to cut tissue located between thestaple cartridge 718 and theanvil 716. - In one aspect, the
control circuit 710 is configured to drive a closure member such as theanvil 716 portion of theend effector 702. Thecontrol circuit 710 provides a motor set point to amotor control 708 b, which provides a drive signal to themotor 704 b. The output shaft of themotor 704 b is coupled to atorque sensor 744 b. Thetorque sensor 744 b is coupled to atransmission 706 b which is coupled to theanvil 716. Thetransmission 706 b comprises movable mechanical elements such as rotating elements and a closure member to control the movement of theanvil 716 from the open and closed positions. In one aspect, themotor 704 b is coupled to a closure gear assembly, which includes a closure reduction gear set that is supported in meshing engagement with the closure spur gear. Thetorque sensor 744 b provides a closure force feedback signal to thecontrol circuit 710. The closure force feedback signal represents the closure force applied to theanvil 716. Theposition sensor 734 may be configured to provide the position of the closure member as a feedback signal to thecontrol circuit 710.Additional sensors 738 in theend effector 702 may provide the closure force feedback signal to thecontrol circuit 710. Thepivotable anvil 716 is positioned opposite thestaple cartridge 718. When ready to use, thecontrol circuit 710 may provide a closure signal to themotor control 708 b. In response to the closure signal, themotor 704 b advances a closure member to grasp tissue between theanvil 716 and thestaple cartridge 718. - In one aspect, the
control circuit 710 is configured to rotate a shaft member such as theshaft 740 to rotate theend effector 702. Thecontrol circuit 710 provides a motor set point to amotor control 708 c, which provides a drive signal to themotor 704 c. The output shaft of themotor 704 c is coupled to atorque sensor 744 c. Thetorque sensor 744 c is coupled to atransmission 706 c which is coupled to theshaft 740. Thetransmission 706 c comprises movable mechanical elements such as rotating elements to control the rotation of theshaft 740 clockwise or counterclockwise up to and over 360°. In one aspect, themotor 704 c is coupled to the rotational transmission assembly, which includes a tube gear segment that is formed on (or attached to) the proximal end of the proximal closure tube for operable engagement by a rotational gear assembly that is operably supported on the tool mounting plate. Thetorque sensor 744 c provides a rotation force feedback signal to thecontrol circuit 710. The rotation force feedback signal represents the rotation force applied to theshaft 740. Theposition sensor 734 may be configured to provide the position of the closure member as a feedback signal to thecontrol circuit 710.Additional sensors 738 such as a shaft encoder may provide the rotational position of theshaft 740 to thecontrol circuit 710. - In one aspect, the
control circuit 710 is configured to articulate theend effector 702. Thecontrol circuit 710 provides a motor set point to amotor control 708 d, which provides a drive signal to themotor 704 d. The output shaft of themotor 704 d is coupled to atorque sensor 744 d. Thetorque sensor 744 d is coupled to atransmission 706d which is coupled to anarticulation member 742 a. Thetransmission 706d comprises movable mechanical elements such as articulation elements to control the articulation of theend effector 702 ±65°. In one aspect, themotor 704 d is coupled to an articulation nut, which is rotatably journaled on the proximal end portion of the distal spine portion and is rotatably driven thereon by an articulation gear assembly. Thetorque sensor 744 d provides an articulation force feedback signal to thecontrol circuit 710. The articulation force feedback signal represents the articulation force applied to theend effector 702.Sensors 738, such as an articulation encoder, may provide the articulation position of theend effector 702 to thecontrol circuit 710. - In another aspect, the articulation function of the robotic
surgical system 700 may comprise two articulation members, or links, 742 a, 742 b. Thesearticulation members motors separate firing motor 704 a is provided, each ofarticulation links articulation members - In one aspect, the one or more motors 704 a-704 e may comprise a brushed DC motor with a gearbox and mechanical links to a firing member, closure member, or articulation member. Another example includes electric motors 704 a-704 e that operate the movable mechanical elements such as the displacement member, articulation links, closure tube, and shaft. An outside influence is an unmeasured, unpredictable influence of things like tissue, surrounding bodies, and friction on the physical system. Such outside influence can be referred to as drag, which acts in opposition to one of electric motors 704 a-704 e. The outside influence, such as drag, may cause the operation of the physical system to deviate from a desired operation of the physical system.
- In one aspect, the
position sensor 734 may be implemented as an absolute positioning system. In one aspect, theposition sensor 734 may comprise a magnetic rotary absolute positioning system implemented as an AS5055EQFT single-chip magnetic rotary position sensor available from Austria Microsystems, AG. Theposition sensor 734 may interface with thecontrol circuit 710 to provide an absolute positioning system. The position may include multiple Hall-effect elements located above a magnet and coupled to a CORDIC processor, also known as the digit-by-digit method and Volder's algorithm, that is provided to implement a simple and efficient algorithm to calculate hyperbolic and trigonometric functions that require only addition, subtraction, bitshift, and table lookup operations. - In one aspect, the
control circuit 710 may be in communication with one ormore sensors 738. Thesensors 738 may be positioned on theend effector 702 and adapted to operate with the roboticsurgical instrument 700 to measure the various derived parameters such as the gap distance versus time, tissue compression versus time, and anvil strain versus time. Thesensors 738 may comprise a magnetic sensor, a magnetic field sensor, a strain gauge, a load cell, a pressure sensor, a force sensor, a torque sensor, an inductive sensor such as an eddy current sensor, a resistive sensor, a capacitive sensor, an optical sensor, and/or any other suitable sensor for measuring one or more parameters of theend effector 702. Thesensors 738 may include one or more sensors. Thesensors 738 may be located on thestaple cartridge 718 deck to determine tissue location using segmented electrodes. The torque sensors 744 a-744 e may be configured to sense force such as firing force, closure force, and/or articulation force, among others. Accordingly, thecontrol circuit 710 can sense (1) the closure load experienced by the distal closure tube and its position, (2) the firing member at the rack and its position, (3) what portion of thestaple cartridge 718 has tissue on it, and (4) the load and position on both articulation rods. - In one aspect, the one or
more sensors 738 may comprise a strain gauge, such as a micro-strain gauge, configured to measure the magnitude of the strain in theanvil 716 during a clamped condition. The strain gauge provides an electrical signal whose amplitude varies with the magnitude of the strain. Thesensors 738 may comprise a pressure sensor configured to detect a pressure generated by the presence of compressed tissue between theanvil 716 and thestaple cartridge 718. Thesensors 738 may be configured to detect impedance of a tissue section located between theanvil 716 and thestaple cartridge 718 that is indicative of the thickness and/or fullness of tissue located therebetween. - In one aspect, the
sensors 738 may be implemented as one or more limit switches, electromechanical devices, solid-state switches, Hall-effect devices, magneto-resistive (MR) devices, giant magneto-resistive (GMR) devices, magnetometers, among others. In other implementations, thesensors 738 may be implemented as solid-state switches that operate under the influence of light, such as optical sensors, IR sensors, ultraviolet sensors, among others. Still, the switches may be solid-state devices such as transistors (e.g., FET, junction FET, MOSFET, bipolar, and the like). In other implementations, thesensors 738 may include electrical conductorless switches, ultrasonic switches, accelerometers, and inertial sensors, among others. - In one aspect, the
sensors 738 may be configured to measure forces exerted on theanvil 716 by the closure drive system. For example, one ormore sensors 738 can be at an interaction point between the closure tube and theanvil 716 to detect the closure forces applied by the closure tube to theanvil 716. The forces exerted on theanvil 716 can be representative of the tissue compression experienced by the tissue section captured between theanvil 716 and thestaple cartridge 718. The one ormore sensors 738 can be positioned at various interaction points along the closure drive system to detect the closure forces applied to theanvil 716 by the closure drive system. The one ormore sensors 738 may be sampled in real time during a clamping operation by the processor of thecontrol circuit 710. Thecontrol circuit 710 receives real-time sample measurements to provide and analyze time-based information and assess, in real time, closure forces applied to theanvil 716. - In one aspect, a
current sensor 736 can be employed to measure the current drawn by each of the motors 704 a-704 e. The force required to advance any of the movable mechanical elements such as the I-beam 714 corresponds to the current drawn by one of the motors 704 a-704 e. The force is converted to a digital signal and provided to thecontrol circuit 710. Thecontrol circuit 710 can be configured to simulate the response of the actual system of the instrument in the software of the controller. A displacement member can be actuated to move an I-beam 714 in theend effector 702 at or near a target velocity. The roboticsurgical instrument 700 can include a feedback controller, which can be one of any feedback controllers, including, but not limited to a PID, a state feedback, a linear-quadratic (LQR), and/or an adaptive controller, for example. The roboticsurgical instrument 700 can include a power source to convert the signal from the feedback controller into a physical input such as case voltage, PWM voltage, frequency modulated voltage, current, torque, and/or force, for example. Additional details are disclosed in U.S. patent application Ser. No. 15/636,829, titled CLOSED LOOP VELOCITY CONTROL TECHNIQUES FOR ROBOTIC SURGICAL INSTRUMENT, filed Jun. 29, 2017, which is herein incorporated by reference in its entirety. -
FIG. 18 illustrates a block diagram of asurgical instrument 750 programmed to control the distal translation of a displacement member according to one aspect of this disclosure. In one aspect, thesurgical instrument 750 is programmed to control the distal translation of a displacement member such as the I-beam 764. Thesurgical instrument 750 comprises anend effector 752 that may comprise ananvil 766, an I-beam 764 (including a sharp cutting edge), and a removablestaple cartridge 768. - The position, movement, displacement, and/or translation of a linear displacement member, such as the I-
beam 764, can be measured by an absolute positioning system, sensor arrangement, andposition sensor 784. Because the I-beam 764 is coupled to a longitudinally movable drive member, the position of the I-beam 764 can be determined by measuring the position of the longitudinally movable drive member employing theposition sensor 784. Accordingly, in the following description, the position, displacement, and/or translation of the I-beam 764 can be achieved by theposition sensor 784 as described herein. Acontrol circuit 760 may be programmed to control the translation of the displacement member, such as the I-beam 764. Thecontrol circuit 760, in some examples, may comprise one or more microcontrollers, microprocessors, or other suitable processors for executing instructions that cause the processor or processors to control the displacement member, e.g., the I-beam 764, in the manner described. In one aspect, a timer/counter 781 provides an output signal, such as the elapsed time or a digital count, to thecontrol circuit 760 to correlate the position of the I-beam 764 as determined by theposition sensor 784 with the output of the timer/counter 781 such that thecontrol circuit 760 can determine the position of the I-beam 764 at a specific time (t) relative to a starting position. The timer/counter 781 may be configured to measure elapsed time, count external events, or time external events. - The
control circuit 760 may generate a motor setpoint signal 772. The motor setpoint signal 772 may be provided to amotor controller 758. Themotor controller 758 may comprise one or more circuits configured to provide amotor drive signal 774 to themotor 754 to drive themotor 754 as described herein. In some examples, themotor 754 may be a brushed DC electric motor. For example, the velocity of themotor 754 may be proportional to themotor drive signal 774. In some examples, themotor 754 may be a brushless DC electric motor and themotor drive signal 774 may comprise a PWM signal provided to one or more stator windings of themotor 754. Also, in some examples, themotor controller 758 may be omitted, and thecontrol circuit 760 may generate themotor drive signal 774 directly. - The
motor 754 may receive power from anenergy source 762. Theenergy source 762 may be or include a battery, a super capacitor, or any other suitable energy source. Themotor 754 may be mechanically coupled to the I-beam 764 via atransmission 756. Thetransmission 756 may include one or more gears or other linkage components to couple themotor 754 to the I-beam 764. Aposition sensor 784 may sense a position of the I-beam 764. Theposition sensor 784 may be or include any type of sensor that is capable of generating position data that indicate a position of the I-beam 764. In some examples, theposition sensor 784 may include an encoder configured to provide a series of pulses to thecontrol circuit 760 as the I-beam 764 translates distally and proximally. Thecontrol circuit 760 may track the pulses to determine the position of the I-beam 764. Other suitable position sensors may be used, including, for example, a proximity sensor. Other types of position sensors may provide other signals indicating motion of the I-beam 764. Also, in some examples, theposition sensor 784 may be omitted. Where themotor 754 is a stepper motor, thecontrol circuit 760 may track the position of the I-beam 764 by aggregating the number and direction of steps that themotor 754 has been instructed to execute. Theposition sensor 784 may be located in theend effector 752 or at any other portion of the instrument. - The
control circuit 760 may be in communication with one ormore sensors 788. Thesensors 788 may be positioned on theend effector 752 and adapted to operate with thesurgical instrument 750 to measure the various derived parameters such as gap distance versus time, tissue compression versus time, and anvil strain versus time. Thesensors 788 may comprise a magnetic sensor, a magnetic field sensor, a strain gauge, a pressure sensor, a force sensor, an inductive sensor such as an eddy current sensor, a resistive sensor, a capacitive sensor, an optical sensor, and/or any other suitable sensor for measuring one or more parameters of theend effector 752. Thesensors 788 may include one or more sensors. - The one or
more sensors 788 may comprise a strain gauge, such as a micro-strain gauge, configured to measure the magnitude of the strain in theanvil 766 during a clamped condition. The strain gauge provides an electrical signal whose amplitude varies with the magnitude of the strain. Thesensors 788 may comprise a pressure sensor configured to detect a pressure generated by the presence of compressed tissue between theanvil 766 and thestaple cartridge 768. Thesensors 788 may be configured to detect impedance of a tissue section located between theanvil 766 and thestaple cartridge 768 that is indicative of the thickness and/or fullness of tissue located therebetween. - The
sensors 788 may be is configured to measure forces exerted on theanvil 766 by a closure drive system. For example, one ormore sensors 788 can be at an interaction point between a closure tube and theanvil 766 to detect the closure forces applied by a closure tube to theanvil 766. The forces exerted on theanvil 766 can be representative of the tissue compression experienced by the tissue section captured between theanvil 766 and thestaple cartridge 768. The one ormore sensors 788 can be positioned at various interaction points along the closure drive system to detect the closure forces applied to theanvil 766 by the closure drive system. The one ormore sensors 788 may be sampled in real time during a clamping operation by a processor of thecontrol circuit 760. Thecontrol circuit 760 receives real-time sample measurements to provide and analyze time-based information and assess, in real time, closure forces applied to theanvil 766. - A
current sensor 786 can be employed to measure the current drawn by themotor 754. The force required to advance the I-beam 764 corresponds to the current drawn by themotor 754. The force is converted to a digital signal and provided to thecontrol circuit 760. - The
control circuit 760 can be configured to simulate the response of the actual system of the instrument in the software of the controller. A displacement member can be actuated to move an I-beam 764 in theend effector 752 at or near a target velocity. Thesurgical instrument 750 can include a feedback controller, which can be one of any feedback controllers, including, but not limited to a PID, a state feedback, LQR, and/or an adaptive controller, for example. Thesurgical instrument 750 can include a power source to convert the signal from the feedback controller into a physical input such as case voltage, PWM voltage, frequency modulated voltage, current, torque, and/or force, for example. - The actual drive system of the
surgical instrument 750 is configured to drive the displacement member, cutting member, or I-beam 764, by a brushed DC motor with gearbox and mechanical links to an articulation and/or knife system. Another example is theelectric motor 754 that operates the displacement member and the articulation driver, for example, of an interchangeable shaft assembly. An outside influence is an unmeasured, unpredictable influence of things like tissue, surrounding bodies and friction on the physical system. Such outside influence can be referred to as drag which acts in opposition to theelectric motor 754. The outside influence, such as drag, may cause the operation of the physical system to deviate from a desired operation of the physical system. - Various example aspects are directed to a
surgical instrument 750 comprising anend effector 752 with motor-driven surgical stapling and cutting implements. For example, amotor 754 may drive a displacement member distally and proximally along a longitudinal axis of theend effector 752. Theend effector 752 may comprise apivotable anvil 766 and, when configured for use, astaple cartridge 768 positioned opposite theanvil 766. A clinician may grasp tissue between theanvil 766 and thestaple cartridge 768, as described herein. When ready to use theinstrument 750, the clinician may provide a firing signal, for example by depressing a trigger of theinstrument 750. In response to the firing signal, themotor 754 may drive the displacement member distally along the longitudinal axis of theend effector 752 from a proximal stroke begin position to a stroke end position distal of the stroke begin position. As the displacement member translates distally, an I-beam 764 with a cutting element positioned at a distal end, may cut the tissue between thestaple cartridge 768 and theanvil 766. - In various examples, the
surgical instrument 750 may comprise acontrol circuit 760 programmed to control the distal translation of the displacement member, such as the I-beam 764, for example, based on one or more tissue conditions. Thecontrol circuit 760 may be programmed to sense tissue conditions, such as thickness, either directly or indirectly, as described herein. Thecontrol circuit 760 may be programmed to select a firing control program based on tissue conditions. A firing control program may describe the distal motion of the displacement member. Different firing control programs may be selected to better treat different tissue conditions. For example, when thicker tissue is present, thecontrol circuit 760 may be programmed to translate the displacement member at a lower velocity and/or with lower power. When thinner tissue is present, thecontrol circuit 760 may be programmed to translate the displacement member at a higher velocity and/or with higher power. - In some examples, the
control circuit 760 may initially operate themotor 754 in an open loop configuration for a first open loop portion of a stroke of the displacement member. Based on a response of theinstrument 750 during the open loop portion of the stroke, thecontrol circuit 760 may select a firing control program. The response of the instrument may include, a translation distance of the displacement member during the open loop portion, a time elapsed during the open loop portion, energy provided to themotor 754 during the open loop portion, a sum of pulse widths of a motor drive signal, etc. After the open loop portion, thecontrol circuit 760 may implement the selected firing control program for a second portion of the displacement member stroke. For example, during the closed loop portion of the stroke, thecontrol circuit 760 may modulate themotor 754 based on translation data describing a position of the displacement member in a closed loop manner to translate the displacement member at a constant velocity. Additional details are disclosed in U.S. Patent Application Ser. No. 15/720,852, titled SYSTEM AND METHODS FOR CONTROLLING A DISPLAY OF A SURGICAL INSTRUMENT, filed Sep. 29, 2017, which is herein incorporated by reference in its entirety. -
FIG. 19 is a schematic diagram of asurgical instrument 790 configured to control various functions according to one aspect of this disclosure. In one aspect, thesurgical instrument 790 is programmed to control distal translation of a displacement member such as the I-beam 764. Thesurgical instrument 790 comprises anend effector 792 that may comprise ananvil 766, an I-beam 764, and a removablestaple cartridge 768 which may be interchanged with an RF cartridge 796 (shown in dashed line). - In one aspect,
sensors 788 may be implemented as a limit switch, electromechanical device, solid-state switches, Hall-effect devices, MR devices, GMR devices, magnetometers, among others. In other implementations, the sensors 638 may be solid-state switches that operate under the influence of light, such as optical sensors, IR sensors, ultraviolet sensors, among others. Still, the switches may be solid-state devices such as transistors (e.g., FET, junction FET, MOSFET, bipolar, and the like). In other implementations, thesensors 788 may include electrical conductorless switches, ultrasonic switches, accelerometers, and inertial sensors, among others. - In one aspect, the
position sensor 784 may be implemented as an absolute positioning system comprising a magnetic rotary absolute positioning system implemented as an AS5055EQFT single-chip magnetic rotary position sensor available from Austria Microsystems, AG. Theposition sensor 784 may interface with thecontrol circuit 760 to provide an absolute positioning system. The position may include multiple Hall-effect elements located above a magnet and coupled to a CORDIC processor, also known as the digit-by-digit method and Volder's algorithm, that is provided to implement a simple and efficient algorithm to calculate hyperbolic and trigonometric functions that require only addition, subtraction, bitshift, and table lookup operations. - In one aspect, the I-
beam 764 may be implemented as a knife member comprising a knife body that operably supports a tissue cutting blade thereon and may further include anvil engagement tabs or features and channel engagement features or a foot. In one aspect, thestaple cartridge 768 may be implemented as a standard (mechanical) surgical fastener cartridge. In one aspect, theRF cartridge 796 may be implemented as an RF cartridge. These and other sensors arrangements are described in commonly owned U.S. patent application Ser. No. 15/628,175, titled TECHNIQUES FOR ADAPTIVE CONTROL OF MOTOR VELOCITY OF A SURGICAL STAPLING AND CUTTING INSTRUMENT, filed Jun. 20, 2017, which is herein incorporated by reference in its entirety. - The position, movement, displacement, and/or translation of a linear displacement member, such as the I-
beam 764, can be measured by an absolute positioning system, sensor arrangement, and position sensor represented asposition sensor 784. Because the I-beam 764 is coupled to the longitudinally movable drive member, the position of the I-beam 764 can be determined by measuring the position of the longitudinally movable drive member employing theposition sensor 784. Accordingly, in the following description, the position, displacement, and/or translation of the I-beam 764 can be achieved by theposition sensor 784 as described herein. Acontrol circuit 760 may be programmed to control the translation of the displacement member, such as the I-beam 764, as described herein. Thecontrol circuit 760, in some examples, may comprise one or more microcontrollers, microprocessors, or other suitable processors for executing instructions that cause the processor or processors to control the displacement member, e.g., the I-beam 764, in the manner described. In one aspect, a timer/counter 781 provides an output signal, such as the elapsed time or a digital count, to thecontrol circuit 760 to correlate the position of the I-beam 764 as determined by theposition sensor 784 with the output of the timer/counter 781 such that thecontrol circuit 760 can determine the position of the I-beam 764 at a specific time (t) relative to a starting position. The timer/counter 781 may be configured to measure elapsed time, count external events, or time external events. - The
control circuit 760 may generate a motor setpoint signal 772. The motor setpoint signal 772 may be provided to amotor controller 758. Themotor controller 758 may comprise one or more circuits configured to provide amotor drive signal 774 to themotor 754 to drive themotor 754 as described herein. In some examples, themotor 754 may be a brushed DC electric motor. For example, the velocity of themotor 754 may be proportional to themotor drive signal 774. In some examples, themotor 754 may be a brushless DC electric motor and themotor drive signal 774 may comprise a PWM signal provided to one or more stator windings of themotor 754. Also, in some examples, themotor controller 758 may be omitted, and thecontrol circuit 760 may generate themotor drive signal 774 directly. - The
motor 754 may receive power from anenergy source 762. Theenergy source 762 may be or include a battery, a super capacitor, or any other suitable energy source. Themotor 754 may be mechanically coupled to the I-beam 764 via atransmission 756. Thetransmission 756 may include one or more gears or other linkage components to couple themotor 754 to the I-beam 764. Aposition sensor 784 may sense a position of the I-beam 764. Theposition sensor 784 may be or include any type of sensor that is capable of generating position data that indicate a position of the I-beam 764. In some examples, theposition sensor 784 may include an encoder configured to provide a series of pulses to thecontrol circuit 760 as the I-beam 764 translates distally and proximally. Thecontrol circuit 760 may track the pulses to determine the position of the I-beam 764. Other suitable position sensors may be used, including, for example, a proximity sensor. Other types of position sensors may provide other signals indicating motion of the I-beam 764. Also, in some examples, theposition sensor 784 may be omitted. Where themotor 754 is a stepper motor, thecontrol circuit 760 may track the position of the I-beam 764 by aggregating the number and direction of steps that the motor has been instructed to execute. Theposition sensor 784 may be located in theend effector 792 or at any other portion of the instrument. - The
control circuit 760 may be in communication with one ormore sensors 788. Thesensors 788 may be positioned on theend effector 792 and adapted to operate with thesurgical instrument 790 to measure the various derived parameters such as gap distance versus time, tissue compression versus time, and anvil strain versus time. Thesensors 788 may comprise a magnetic sensor, a magnetic field sensor, a strain gauge, a pressure sensor, a force sensor, an inductive sensor such as an eddy current sensor, a resistive sensor, a capacitive sensor, an optical sensor, and/or any other suitable sensor for measuring one or more parameters of theend effector 792. Thesensors 788 may include one or more sensors. - The one or
more sensors 788 may comprise a strain gauge, such as a micro-strain gauge, configured to measure the magnitude of the strain in theanvil 766 during a clamped condition. The strain gauge provides an electrical signal whose amplitude varies with the magnitude of the strain. Thesensors 788 may comprise a pressure sensor configured to detect a pressure generated by the presence of compressed tissue between theanvil 766 and thestaple cartridge 768. Thesensors 788 may be configured to detect impedance of a tissue section located between theanvil 766 and thestaple cartridge 768 that is indicative of the thickness and/or fullness of tissue located therebetween. - The
sensors 788 may be is configured to measure forces exerted on theanvil 766 by the closure drive system. For example, one ormore sensors 788 can be at an interaction point between a closure tube and theanvil 766 to detect the closure forces applied by a closure tube to theanvil 766. The forces exerted on theanvil 766 can be representative of the tissue compression experienced by the tissue section captured between theanvil 766 and thestaple cartridge 768. The one ormore sensors 788 can be positioned at various interaction points along the closure drive system to detect the closure forces applied to theanvil 766 by the closure drive system. The one ormore sensors 788 may be sampled in real time during a clamping operation by a processor portion of thecontrol circuit 760. Thecontrol circuit 760 receives real-time sample measurements to provide and analyze time-based information and assess, in real time, closure forces applied to theanvil 766. - A
current sensor 786 can be employed to measure the current drawn by themotor 754. The force required to advance the I-beam 764 corresponds to the current drawn by themotor 754. The force is converted to a digital signal and provided to thecontrol circuit 760. - An
RF energy source 794 is coupled to theend effector 792 and is applied to theRF cartridge 796 when theRF cartridge 796 is loaded in theend effector 792 in place of thestaple cartridge 768. Thecontrol circuit 760 controls the delivery of the RF energy to theRF cartridge 796. - Additional details are disclosed in U.S. patent application Ser. No. 15/636,096, titled SURGICAL SYSTEM COUPLABLE WITH STAPLE CARTRIDGE AND RADIO FREQUENCY CARTRIDGE, AND METHOD OF USING SAME, filed Jun. 28, 2017, which is herein incorporated by reference in its entirety.
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FIG. 20 is a simplified block diagram of agenerator 800 configured to provide inductorless tuning, among other benefits. Additional details of thegenerator 800 are described in U.S. Pat. No. 9,060,775, titled SURGICAL GENERATOR FOR ULTRASONIC AND ELECTROSURGICAL DEVICES, which issued on Jun. 23, 2015, which is herein incorporated by reference in its entirety. Thegenerator 800 may comprise a patientisolated stage 802 in communication with anon-isolated stage 804 via a power transformer 806. A secondary winding 808 of the power transformer 806 is contained in theisolated stage 802 and may comprise a tapped configuration (e.g., a center-tapped or a non-center-tapped configuration) to define drive signal outputs 810 a, 810 b, 810 c for delivering drive signals to different surgical instruments, such as, for example, an ultrasonic surgical instrument, an RF electrosurgical instrument, and a multifunction surgical instrument which includes ultrasonic and RF energy modes that can be delivered alone or simultaneously. In particular, drive signal outputs 810 a, 810 c may output an ultrasonic drive signal (e.g., a 420V root-mean-square (RMS) drive signal) to an ultrasonic surgical instrument, and drive signal outputs 810 b, 810 c may output an RF electrosurgical drive signal (e.g., a 100V RMS drive signal) to an RF electrosurgical instrument, with thedrive signal output 810 b corresponding to the center tap of the power transformer 806. - In certain forms, the ultrasonic and electrosurgical drive signals may be provided simultaneously to distinct surgical instruments and/or to a single surgical instrument, such as the multifunction surgical instrument, having the capability to deliver both ultrasonic and electrosurgical energy to tissue. It will be appreciated that the electrosurgical signal, provided either to a dedicated electrosurgical instrument and/or to a combined multifunction ultrasonic/electrosurgical instrument may be either a therapeutic or sub-therapeutic level signal where the sub-therapeutic signal can be used, for example, to monitor tissue or instrument conditions and provide feedback to the generator. For example, the ultrasonic and RF signals can be delivered separately or simultaneously from a generator with a single output port in order to provide the desired output signal to the surgical instrument, as will be discussed in more detail below. Accordingly, the generator can combine the ultrasonic and electrosurgical RF energies and deliver the combined energies to the multifunction ultrasonic/electrosurgical instrument. Bipolar electrodes can be placed on one or both jaws of the end effector. One jaw may be driven by ultrasonic energy in addition to electrosurgical RF energy, working simultaneously. The ultrasonic energy may be employed to dissect tissue, while the electrosurgical RF energy may be employed for vessel sealing.
- The
non-isolated stage 804 may comprise apower amplifier 812 having an output connected to a primary winding 814 of the power transformer 806. In certain forms, thepower amplifier 812 may comprise a push-pull amplifier. For example, thenon-isolated stage 804 may further comprise alogic device 816 for supplying a digital output to a digital-to-analog converter (DAC)circuit 818, which in turn supplies a corresponding analog signal to an input of thepower amplifier 812. In certain forms, thelogic device 816 may comprise a programmable gate array (PGA), a FPGA, programmable logic device (PLD), among other logic circuits, for example. Thelogic device 816, by virtue of controlling the input of thepower amplifier 812 via theDAC circuit 818, may therefore control any of a number of parameters (e.g., frequency, waveform shape, waveform amplitude) of drive signals appearing at the drive signal outputs 810 a, 810 b, 810 c. In certain forms and as discussed below, thelogic device 816, in conjunction with a processor (e.g., a DSP discussed below), may implement a number of DSP-based and/or other control algorithms to control parameters of the drive signals output by thegenerator 800. - Power may be supplied to a power rail of the
power amplifier 812 by a switch-mode regulator 820, e.g., a power converter. In certain forms, the switch-mode regulator 820 may comprise an adjustable buck regulator, for example. Thenon-isolated stage 804 may further comprise afirst processor 822, which in one form may comprise a DSP processor such as an Analog Devices ADSP-21469 SHARC DSP, available from Analog Devices, Norwood, MA, for example, although in various forms any suitable processor may be employed. In certain forms theDSP processor 822 may control the operation of the switch-mode regulator 820 responsive to voltage feedback data received from thepower amplifier 812 by theDSP processor 822 via anADC circuit 824. In one form, for example, theDSP processor 822 may receive as input, via theADC circuit 824, the waveform envelope of a signal (e.g., an RF signal) being amplified by thepower amplifier 812. TheDSP processor 822 may then control the switch-mode regulator 820 (e.g., via a PWM output) such that the rail voltage supplied to thepower amplifier 812 tracks the waveform envelope of the amplified signal. By dynamically modulating the rail voltage of thepower amplifier 812 based on the waveform envelope, the efficiency of thepower amplifier 812 may be significantly improved relative to a fixed rail voltage amplifier schemes. - In certain forms, the
logic device 816, in conjunction with theDSP processor 822, may implement a digital synthesis circuit such as a direct digital synthesizer control scheme to control the waveform shape, frequency, and/or amplitude of drive signals output by thegenerator 800. In one form, for example, thelogic device 816 may implement a DDS control algorithm by recalling waveform samples stored in a dynamically updated lookup table (LUT), such as a RAM LUT, which may be embedded in an FPGA. This control algorithm is particularly useful for ultrasonic applications in which an ultrasonic transducer, such as an ultrasonic transducer, may be driven by a clean sinusoidal current at its resonant frequency. Because other frequencies may excite parasitic resonances, minimizing or reducing the total distortion of the motional branch current may correspondingly minimize or reduce undesirable resonance effects. Because the waveform shape of a drive signal output by thegenerator 800 is impacted by various sources of distortion present in the output drive circuit (e.g., the power transformer 806, the power amplifier 812), voltage and current feedback data based on the drive signal may be input into an algorithm, such as an error control algorithm implemented by theDSP processor 822, which compensates for distortion by suitably pre-distorting or modifying the waveform samples stored in the LUT on a dynamic, ongoing basis (e.g., in real time). In one form, the amount or degree of pre-distortion applied to the LUT samples may be based on the error between a computed motional branch current and a desired current waveform shape, with the error being determined on a sample-by-sample basis. In this way, the pre-distorted LUT samples, when processed through the drive circuit, may result in a motional branch drive signal having the desired waveform shape (e.g., sinusoidal) for optimally driving the ultrasonic transducer. In such forms, the LUT waveform samples will therefore not represent the desired waveform shape of the drive signal, but rather the waveform shape that is required to ultimately produce the desired waveform shape of the motional branch drive signal when distortion effects are taken into account. - The
non-isolated stage 804 may further comprise afirst ADC circuit 826 and asecond ADC circuit 828 coupled to the output of the power transformer 806 via respective isolation transformers 830, 832 for respectively sampling the voltage and current of drive signals output by thegenerator 800. In certain forms, theADC circuits ADC circuits ADC circuit generator 800 may enable, among other things, calculation of the complex current flowing through the motional branch (which may be used in certain forms to implement DDS-based waveform shape control described above), accurate digital filtering of the sampled signals, and calculation of real power consumption with a high degree of precision. Voltage and current feedback data output by theADC circuits logic device 816 and stored in data memory for subsequent retrieval by, for example, theDSP processor 822. As noted above, voltage and current feedback data may be used as input to an algorithm for pre-distorting or modifying LUT waveform samples on a dynamic and ongoing basis. In certain forms, this may require each stored voltage and current feedback data pair to be indexed based on, or otherwise associated with, a corresponding LUT sample that was output by thelogic device 816 when the voltage and current feedback data pair was acquired. Synchronization of the LUT samples and the voltage and current feedback data in this manner contributes to the correct timing and stability of the pre-distortion algorithm. - In certain forms, the voltage and current feedback data may be used to control the frequency and/or amplitude (e.g., current amplitude) of the drive signals. In one form, for example, voltage and current feedback data may be used to determine impedance phase. The frequency of the drive signal may then be controlled to minimize or reduce the difference between the determined impedance phase and an impedance phase setpoint (e.g., 0°), thereby minimizing or reducing the effects of harmonic distortion and correspondingly enhancing impedance phase measurement accuracy. The determination of phase impedance and a frequency control signal may be implemented in the
DSP processor 822, for example, with the frequency control signal being supplied as input to a DDS control algorithm implemented by thelogic device 816. - In another form, for example, the current feedback data may be monitored in order to maintain the current amplitude of the drive signal at a current amplitude setpoint. The current amplitude setpoint may be specified directly or determined indirectly based on specified voltage amplitude and power setpoints. In certain forms, control of the current amplitude may be implemented by control algorithm, such as, for example, a proportional-integral-derivative (PID) control algorithm, in the
DSP processor 822. Variables controlled by the control algorithm to suitably control the current amplitude of the drive signal may include, for example, the scaling of the LUT waveform samples stored in thelogic device 816 and/or the full-scale output voltage of the DAC circuit 818 (which supplies the input to the power amplifier 812) via aDAC circuit 834. - The
non-isolated stage 804 may further comprise asecond processor 836 for providing, among other things user interface (UI) functionality. In one form, theUI processor 836 may comprise an Atmel AT91SAM9263 processor having an ARM 926EJ-S core, available from Atmel Corporation, San Jose, Calif., for example. Examples of UI functionality supported by theUI processor 836 may include audible and visual user feedback, communication with peripheral devices (e.g., via a USB interface), communication with a foot switch, communication with an input device (e.g., a touch screen display) and communication with an output device (e.g., a speaker). TheUI processor 836 may communicate with theDSP processor 822 and the logic device 816 (e.g., via SPI buses). Although theUI processor 836 may primarily support UI functionality, it may also coordinate with theDSP processor 822 to implement hazard mitigation in certain forms. For example, theUI processor 836 may be programmed to monitor various aspects of user input and/or other inputs (e.g., touch screen inputs, foot switch inputs, temperature sensor inputs) and may disable the drive output of thegenerator 800 when an erroneous condition is detected. - In certain forms, both the
DSP processor 822 and theUI processor 836, for example, may determine and monitor the operating state of thegenerator 800. For theDSP processor 822, the operating state of thegenerator 800 may dictate, for example, which control and/or diagnostic processes are implemented by theDSP processor 822. For theUI processor 836, the operating state of thegenerator 800 may dictate, for example, which elements of a UI (e.g., display screens, sounds) are presented to a user. The respective DSP andUI processors generator 800 and recognize and evaluate possible transitions out of the current operating state. TheDSP processor 822 may function as the master in this relationship and determine when transitions between operating states are to occur. TheUI processor 836 may be aware of valid transitions between operating states and may confirm if a particular transition is appropriate. For example, when theDSP processor 822 instructs theUI processor 836 to transition to a specific state, theUI processor 836 may verify that requested transition is valid. In the event that a requested transition between states is determined to be invalid by theUI processor 836, theUI processor 836 may cause thegenerator 800 to enter a failure mode. - The
non-isolated stage 804 may further comprise acontroller 838 for monitoring input devices (e.g., a capacitive touch sensor used for turning thegenerator 800 on and off, a capacitive touch screen). In certain forms, thecontroller 838 may comprise at least one processor and/or other controller device in communication with theUI processor 836. In one form, for example, thecontroller 838 may comprise a processor (e.g., a Meg168 8-bit controller available from Atmel) configured to monitor user input provided via one or more capacitive touch sensors. In one form, thecontroller 838 may comprise a touch screen controller (e.g., a QT5480 touch screen controller available from Atmel) to control and manage the acquisition of touch data from a capacitive touch screen. - In certain forms, when the
generator 800 is in a “power off” state, thecontroller 838 may continue to receive operating power (e.g., via a line from a power supply of thegenerator 800, such as thepower supply 854 discussed below). In this way, thecontroller 838 may continue to monitor an input device (e.g., a capacitive touch sensor located on a front panel of the generator 800) for turning thegenerator 800 on and off. When thegenerator 800 is in the power off state, thecontroller 838 may wake the power supply (e.g., enable operation of one or more DC/DC voltage converters 856 of the power supply 854) if activation of the “on/off” input device by a user is detected. Thecontroller 838 may therefore initiate a sequence for transitioning thegenerator 800 to a “power on” state. Conversely, thecontroller 838 may initiate a sequence for transitioning thegenerator 800 to the power off state if activation of the “on/off” input device is detected when thegenerator 800 is in the power on state. In certain forms, for example, thecontroller 838 may report activation of the “on/off” input device to theUI processor 836, which in turn implements the necessary process sequence for transitioning thegenerator 800 to the power off state. In such forms, thecontroller 838 may have no independent ability for causing the removal of power from thegenerator 800 after its power on state has been established. - In certain forms, the
controller 838 may cause thegenerator 800 to provide audible or other sensory feedback for alerting the user that a power on or power off sequence has been initiated. Such an alert may be provided at the beginning of a power on or power off sequence and prior to the commencement of other processes associated with the sequence. - In certain forms, the
isolated stage 802 may comprise aninstrument interface circuit 840 to, for example, provide a communication interface between a control circuit of a surgical instrument (e.g., a control circuit comprising handpiece switches) and components of thenon-isolated stage 804, such as, for example, thelogic device 816, theDSP processor 822, and/or theUI processor 836. Theinstrument interface circuit 840 may exchange information with components of thenon-isolated stage 804 via a communication link that maintains a suitable degree of electrical isolation between the isolated andnon-isolated stages instrument interface circuit 840 using, for example, a low-dropout voltage regulator powered by an isolation transformer driven from thenon-isolated stage 804. - In one form, the
instrument interface circuit 840 may comprise a logic circuit 842 (e.g., logic circuit, programmable logic circuit, PGA, FPGA, PLD) in communication with a signal conditioning circuit 844. The signal conditioning circuit 844 may be configured to receive a periodic signal from the logic circuit 842 (e.g., a 2 kHz square wave) to generate a bipolar interrogation signal having an identical frequency. The interrogation signal may be generated, for example, using a bipolar current source fed by a differential amplifier. The interrogation signal may be communicated to a surgical instrument control circuit (e.g., by using a conductive pair in a cable that connects thegenerator 800 to the surgical instrument) and monitored to determine a state or configuration of the control circuit. The control circuit may comprise a number of switches, resistors, and/or diodes to modify one or more characteristics (e.g., amplitude, rectification) of the interrogation signal such that a state or configuration of the control circuit is uniquely discernable based on the one or more characteristics. In one form, for example, the signal conditioning circuit 844 may comprise an ADC circuit for generating samples of a voltage signal appearing across inputs of the control circuit resulting from passage of interrogation signal therethrough. The logic circuit 842 (or a component of the non-isolated stage 804) may then determine the state or configuration of the control circuit based on the ADC circuit samples. - In one form, the
instrument interface circuit 840 may comprise a first data circuit interface 846 to enable information exchange between the logic circuit 842 (or other element of the instrument interface circuit 840) and a first data circuit disposed in or otherwise associated with a surgical instrument. In certain forms, for example, a first data circuit may be disposed in a cable integrally attached to a surgical instrument handpiece or in an adaptor for interfacing a specific surgical instrument type or model with thegenerator 800. The first data circuit may be implemented in any suitable manner and may communicate with the generator according to any suitable protocol, including, for example, as described herein with respect to the first data circuit. In certain forms, the first data circuit may comprise a non-volatile storage device, such as an EEPROM device. In certain forms, the first data circuit interface 846 may be implemented separately from the logic circuit 842 and comprise suitable circuitry (e.g., discrete logic devices, a processor) to enable communication between the logic circuit 842 and the first data circuit. In other forms, the first data circuit interface 846 may be integral with the logic circuit 842. - In certain forms, the first data circuit may store information pertaining to the particular surgical instrument with which it is associated. Such information may include, for example, a model number, a serial number, a number of operations in which the surgical instrument has been used, and/or any other type of information. This information may be read by the instrument interface circuit 840 (e.g., by the logic circuit 842), transferred to a component of the non-isolated stage 804 (e.g., to
logic device 816,DSP processor 822, and/or UI processor 836) for presentation to a user via an output device and/or for controlling a function or operation of thegenerator 800. Additionally, any type of information may be communicated to the first data circuit for storage therein via the first data circuit interface 846 (e.g., using the logic circuit 842). Such information may comprise, for example, an updated number of operations in which the surgical instrument has been used and/or dates and/or times of its usage. - As discussed previously, a surgical instrument may be detachable from a handpiece (e.g., the multifunction surgical instrument may be detachable from the handpiece) to promote instrument interchangeability and/or disposability. In such cases, conventional generators may be limited in their ability to recognize particular instrument configurations being used and to optimize control and diagnostic processes accordingly. The addition of readable data circuits to surgical instruments to address this issue is problematic from a compatibility standpoint, however. For example, designing a surgical instrument to remain backwardly compatible with generators that lack the requisite data reading functionality may be impractical due to, for example, differing signal schemes, design complexity, and cost. Forms of instruments discussed herein address these concerns by using data circuits that may be implemented in existing surgical instruments economically and with minimal design changes to preserve compatibility of the surgical instruments with current generator platforms.
- Additionally, forms of the
generator 800 may enable communication with instrument-based data circuits. For example, thegenerator 800 may be configured to communicate with a second data circuit contained in an instrument (e.g., the multifunction surgical instrument). In some forms, the second data circuit may be implemented in a many similar to that of the first data circuit described herein. Theinstrument interface circuit 840 may comprise a seconddata circuit interface 848 to enable this communication. In one form, the seconddata circuit interface 848 may comprise a tri-state digital interface, although other interfaces may also be used. In certain forms, the second data circuit may generally be any circuit for transmitting and/or receiving data. In one form, for example, the second data circuit may store information pertaining to the particular surgical instrument with which it is associated. Such information may include, for example, a model number, a serial number, a number of operations in which the surgical instrument has been used, and/or any other type of information. - In some forms, the second data circuit may store information about the electrical and/or ultrasonic properties of an associated ultrasonic transducer, end effector, or ultrasonic drive system. For example, the first data circuit may indicate a burn-in frequency slope, as described herein. Additionally or alternatively, any type of information may be communicated to second data circuit for storage therein via the second data circuit interface 848 (e.g., using the logic circuit 842). Such information may comprise, for example, an updated number of operations in which the instrument has been used and/or dates and/or times of its usage. In certain forms, the second data circuit may transmit data acquired by one or more sensors (e.g., an instrument-based temperature sensor). In certain forms, the second data circuit may receive data from the
generator 800 and provide an indication to a user (e.g., a light emitting diode indication or other visible indication) based on the received data. - In certain forms, the second data circuit and the second
data circuit interface 848 may be configured such that communication between the logic circuit 842 and the second data circuit can be effected without the need to provide additional conductors for this purpose (e.g., dedicated conductors of a cable connecting a handpiece to the generator 800). In one form, for example, information may be communicated to and from the second data circuit using a one-wire bus communication scheme implemented on existing cabling, such as one of the conductors used transmit interrogation signals from the signal conditioning circuit 844 to a control circuit in a handpiece. In this way, design changes or modifications to the surgical instrument that might otherwise be necessary are minimized or reduced. Moreover, because different types of communications implemented over a common physical channel can be frequency-band separated, the presence of a second data circuit may be “invisible” to generators that do not have the requisite data reading functionality, thus enabling backward compatibility of the surgical instrument. - In certain forms, the
isolated stage 802 may comprise at least one blocking capacitor 850-1 connected to thedrive signal output 810 b to prevent passage of DC current to a patient. A single blocking capacitor may be required to comply with medical regulations or standards, for example. While failure in single-capacitor designs is relatively uncommon, such failure may nonetheless have negative consequences. In one form, a second blocking capacitor 850-2 may be provided in series with the blocking capacitor 850-1, with current leakage from a point between the blocking capacitors 850-1, 850-2 being monitored by, for example, anADC circuit 852 for sampling a voltage induced by leakage current. The samples may be received by the logic circuit 842, for example. Based changes in the leakage current (as indicated by the voltage samples), thegenerator 800 may determine when at least one of the blocking capacitors 850-1, 850-2 has failed, thus providing a benefit over single-capacitor designs having a single point of failure. - In certain forms, the
non-isolated stage 804 may comprise apower supply 854 for delivering DC power at a suitable voltage and current. The power supply may comprise, for example, a 400 W power supply for delivering a 48 VDC system voltage. Thepower supply 854 may further comprise one or more DC/DC voltage converters 856 for receiving the output of the power supply to generate DC outputs at the voltages and currents required by the various components of thegenerator 800. As discussed above in connection with thecontroller 838, one or more of the DC/DC voltage converters 856 may receive an input from thecontroller 838 when activation of the “on/off” input device by a user is detected by thecontroller 838 to enable operation of, or wake, the DC/DC voltage converters 856. -
FIG. 21 illustrates an example of agenerator 900, which is one form of the generator 800 (FIG. 20 ). Thegenerator 900 is configured to deliver multiple energy modalities to a surgical instrument. Thegenerator 900 provides RF and ultrasonic signals for delivering energy to a surgical instrument either independently or simultaneously. The RF and ultrasonic signals may be provided alone or in combination and may be provided simultaneously. As noted above, at least one generator output can deliver multiple energy modalities (e.g., ultrasonic, bipolar or monopolar RF, irreversible and/or reversible electroporation, and/or microwave energy, among others) through a single port, and these signals can be delivered separately or simultaneously to the end effector to treat tissue. - The
generator 900 comprises aprocessor 902 coupled to awaveform generator 904. Theprocessor 902 andwaveform generator 904 are configured to generate a variety of signal waveforms based on information stored in a memory coupled to theprocessor 902, not shown for clarity of disclosure. The digital information associated with a waveform is provided to thewaveform generator 904 which includes one or more DAC circuits to convert the digital input into an analog output. The analog output is fed to an amplifier 1106 for signal conditioning and amplification. The conditioned and amplified output of theamplifier 906 is coupled to apower transformer 908. The signals are coupled across thepower transformer 908 to the secondary side, which is in the patient isolation side. A first signal of a first energy modality is provided to the surgical instrument between the terminals labeled ENERGY1 and RETURN. A second signal of a second energy modality is coupled across acapacitor 910 and is provided to the surgical instrument between the terminals labeled ENERGY2 and RETURN. It will be appreciated that more than two energy modalities may be output and thus the subscript “n” may be used to designate that up to n ENERGYn terminals may be provided, where n is a positive integer greater than 1. It also will be appreciated that up to “n” return paths RETURNn may be provided without departing from the scope of the present disclosure. - A first
voltage sensing circuit 912 is coupled across the terminals labeled ENERGY1 and the RETURN path to measure the output voltage therebetween. A secondvoltage sensing circuit 924 is coupled across the terminals labeled ENERGY2 and the RETURN path to measure the output voltage therebetween. Acurrent sensing circuit 914 is disposed in series with the RETURN leg of the secondary side of thepower transformer 908 as shown to measure the output current for either energy modality. If different return paths are provided for each energy modality, then a separate current sensing circuit should be provided in each return leg. The outputs of the first and secondvoltage sensing circuits respective isolation transformers current sensing circuit 914 is provided to another isolation transformer 918. The outputs of theisolation transformers more ADC circuit 926. The digitized output of theADC circuit 926 is provided to theprocessor 902 for further processing and computation. The output voltages and output current feedback information can be employed to adjust the output voltage and current provided to the surgical instrument and to compute output impedance, among other parameters. Input/output communications between theprocessor 902 and patient isolated circuits is provided through aninterface circuit 920. Sensors also may be in electrical communication with theprocessor 902 by way of theinterface circuit 920. - In one aspect, the impedance may be determined by the
processor 902 by dividing the output of either the firstvoltage sensing circuit 912 coupled across the terminals labeled ENERGY1/RETURN or the secondvoltage sensing circuit 924 coupled across the terminals labeled ENERGY2/RETURN by the output of thecurrent sensing circuit 914 disposed in series with the RETURN leg of the secondary side of thepower transformer 908. The outputs of the first and secondvoltage sensing circuits isolations transformers current sensing circuit 914 is provided to anotherisolation transformer 916. The digitized voltage and current sensing measurements from theADC circuit 926 are provided theprocessor 902 for computing impedance. As an example, the first energy modality ENERGY1 may be ultrasonic energy and the second energy modality ENERGY2 may be RF energy. Nevertheless, in addition to ultrasonic and bipolar or monopolar RF energy modalities, other energy modalities include irreversible and/or reversible electroporation and/or microwave energy, among others. Also, although the example illustrated inFIG. 21 shows a single return path RETURN may be provided for two or more energy modalities, in other aspects, multiple return paths RETURNn may be provided for each energy modality ENERGYn. Thus, as described herein, the ultrasonic transducer impedance may be measured by dividing the output of the firstvoltage sensing circuit 912 by thecurrent sensing circuit 914 and the tissue impedance may be measured by dividing the output of the secondvoltage sensing circuit 924 by thecurrent sensing circuit 914. - As shown in
FIG. 21 , thegenerator 900 comprising at least one output port can include apower transformer 908 with a single output and with multiple taps to provide power in the form of one or more energy modalities, such as ultrasonic, bipolar or monopolar RF, irreversible and/or reversible electroporation, and/or microwave energy, among others, for example, to the end effector depending on the type of treatment of tissue being performed. For example, thegenerator 900 can deliver energy with higher voltage and lower current to drive an ultrasonic transducer, with lower voltage and higher current to drive RF electrodes for sealing tissue, or with a coagulation waveform for spot coagulation using either monopolar or bipolar RF electrosurgical electrodes. The output waveform from thegenerator 900 can be steered, switched, or filtered to provide the frequency to the end effector of the surgical instrument. The connection of an ultrasonic transducer to thegenerator 900 output would be preferably located between the output labeled ENERGY1 and RETURN as shown inFIG. 21 . In one example, a connection of RF bipolar electrodes to thegenerator 900 output would be preferably located between the output labeled ENERGY2 and RETURN. In the case of monopolar output, the preferred connections would be active electrode (e.g., pencil or other probe) to the ENERGY2 output and a suitable return pad connected to the RETURN output. - Additional details are disclosed in U.S. Patent Application Publication No. 2017/0086914, titled TECHNIQUES FOR OPERATING GENERATOR FOR DIGITALLY GENERATING ELECTRICAL SIGNAL WAVEFORMS AND SURGICAL INSTRUMENTS, which published on Mar. 30, 2017, which is herein incorporated by reference in its entirety.
- As used throughout this description, the term “wireless” and its derivatives may be used to describe circuits, devices, systems, methods, techniques, communications channels, etc., that may communicate data through the use of modulated electromagnetic radiation through a non-solid medium. The term does not imply that the associated devices do not contain any wires, although in some aspects they might not. The communication module may implement any of a number of wireless or wired communication standards or protocols, including but not limited to Wi-Fi (IEEE 802.11 family), WiMAX (IEEE 802.16 family), IEEE 802.20, long term evolution (LTE), Ev-DO, HSPA+, HSDPA+, HSUPA+, EDGE, GSM, GPRS, CDMA, TDMA, DECT, Bluetooth, Ethernet derivatives thereof, as well as any other wireless and wired protocols that are designated as 3G, 4G, 5G, and beyond. The computing module may include a plurality of communication modules. For instance, a first communication module may be dedicated to shorter range wireless communications such as Wi-Fi and Bluetooth and a second communication module may be dedicated to longer range wireless communications such as GPS, EDGE, GPRS, CDMA, WiMAX, LTE, Ev-DO, and others.
- As used herein a processor or processing unit is an electronic circuit which performs operations on some external data source, usually memory or some other data stream. The term is used herein to refer to the central processor (central processing unit) in a system or computer systems (especially systems on a chip (SoCs)) that combine a number of specialized “processors.”
- As used herein, a system on a chip or system on chip (SoC or SOC) is an integrated circuit (also known as an “IC” or “chip”) that integrates all components of a computer or other electronic systems. It may contain digital, analog, mixed-signal, and often radio-frequency functions—all on a single substrate. A SoC integrates a microcontroller (or microprocessor) with advanced peripherals like graphics processing unit (GPU), Wi-Fi module, or coprocessor. A SoC may or may not contain built-in memory.
- As used herein, a microcontroller or controller is a system that integrates a microprocessor with peripheral circuits and memory. A microcontroller (or MCU for microcontroller unit) may be implemented as a small computer on a single integrated circuit. It may be similar to a SoC; an SoC may include a microcontroller as one of its components. A microcontroller may contain one or more core processing units (CPUs) along with memory and programmable input/output peripherals. Program memory in the form of Ferroelectric RAM, NOR flash or OTP ROM is also often included on chip, as well as a small amount of RAM. Microcontrollers may be employed for embedded applications, in contrast to the microprocessors used in personal computers or other general purpose applications consisting of various discrete chips.
- As used herein, the term controller or microcontroller may be a stand-alone IC or chip device that interfaces with a peripheral device. This may be a link between two parts of a computer or a controller on an external device that manages the operation of (and connection with) that device.
- Any of the processors or microcontrollers described herein, may be implemented by any single core or multicore processor such as those known under the trade name ARM Cortex by Texas Instruments. In one aspect, the processor may be an LM4F230H5QR ARM Cortex-M4F Processor Core, available from Texas Instruments, for example, comprising on-chip memory of 256 KB single-cycle flash memory, or other non-volatile memory, up to 40 MHz, a prefetch buffer to improve performance above 40 MHz, a 32 KB single-cycle serial random access memory (SRAM), internal read-only memory (ROM) loaded with StellarisWare® software, 2 KB electrically erasable programmable read-only memory (EEPROM), one or more pulse width modulation (PWM) modules, one or more quadrature encoder inputs (QEI) analog, one or more 12-bit Analog-to-Digital Converters (ADC) with 12 analog input channels, details of which are available for the product datasheet.
- In one aspect, the processor may comprise a safety controller comprising two controller-based families such as TMS570 and RM4x known under the trade name Hercules ARM Cortex R4, also by Texas Instruments. The safety controller may be configured specifically for IEC 61508 and ISO 26262 safety critical applications, among others, to provide advanced integrated safety features while delivering scalable performance, connectivity, and memory options.
- Modular devices include the modules (as described in connection with
FIGS. 3 and 9 , for example) that are receivable within a surgical hub and the surgical devices or instruments that can be connected to the various modules in order to connect or pair with the corresponding surgical hub. The modular devices include, for example, intelligent surgical instruments, medical imaging devices, suction/irrigation devices, smoke evacuators, energy generators, ventilators, insufflators, and displays. The modular devices described herein can be controlled by control algorithms. The control algorithms can be executed on the modular device itself, on the surgical hub to which the particular modular device is paired, or on both the modular device and the surgical hub (e.g., via a distributed computing architecture). In some exemplifications, the modular devices' control algorithms control the devices based on data sensed by the modular device itself (i.e., by sensors in, on, or connected to the modular device). This data can be related to the patient being operated on (e.g., tissue properties or insufflation pressure) or the modular device itself (e.g., the rate at which a knife is being advanced, motor current, or energy levels). For example, a control algorithm for a surgical stapling and cutting instrument can control the rate at which the instrument's motor drives its knife through tissue according to resistance encountered by the knife as it advances. - Situational awareness is the ability of some aspects of a surgical system to determine or infer information related to a surgical procedure from data received from databases and/or instruments. The information can include the type of procedure being undertaken, the type of tissue being operated on, or the body cavity that is the subject of the procedure. With the contextual information related to the surgical procedure, the surgical system can, for example, improve the manner in which it controls the modular devices (e.g. a robotic arm and/or robotic surgical tool) that are connected to it and provide contextualized information or suggestions to the surgeon during the course of the surgical procedure.
- Referring now to
FIG. 56 , atimeline 5200 depicting situational awareness of a hub, such as thesurgical hub timeline 5200 is an illustrative surgical procedure and the contextual information that thesurgical hub timeline 5200 depicts the typical steps that would be taken by the nurses, surgeons, and other medical personnel during the course of a lung segmentectomy procedure, beginning with setting up the operating theater and ending with transferring the patient to a post-operative recovery room. - The situationally aware
surgical hub surgical hub surgical hub surgical hub - As the
first step 5202 in this illustrative procedure, the hospital staff members retrieve the patient's Electronic Medical Record (EMR) from the hospital's EMR database. Based on select patient data in the EMR, thesurgical hub -
Second step 5204, the staff members scan the incoming medical supplies for the procedure. Thesurgical hub surgical hub -
Third step 5206, the medical personnel scan the patient band via a scanner that is communicably connected to thesurgical hub surgical hub -
Fourth step 5208, the medical staff turns on the auxiliary equipment. The auxiliary equipment being utilized can vary according to the type of surgical procedure and the techniques to be used by the surgeon, but in this illustrative case they include a smoke evacuator, insufflator, and medical imaging device. When activated, the auxiliary equipment that are modular devices can automatically pair with thesurgical hub surgical hub surgical hub surgical hub surgical hub surgical hub - Fifth step 5210, the staff members attach the EKG electrodes and other patient monitoring devices to the patient. The EKG electrodes and other patient monitoring devices are able to pair with the
surgical hub surgical hub surgical hub - Sixth step 5212, the medical personnel induce anesthesia in the patient. The
surgical hub -
Seventh step 5214, the patient's lung that is being operated on is collapsed (while ventilation is switched to the contralateral lung). Thesurgical hub surgical hub -
Eighth step 5216, the medical imaging device (e.g., a scope) is inserted and video from the medical imaging device is initiated. Thesurgical hub surgical hub surgical hub surgical hub second step 5204 of the procedure). The data from the medical imaging device 124 (FIG. 2 ) can be utilized to determine contextual information regarding the type of procedure being performed in a number of different ways, including by determining the angle at which the medical imaging device is oriented with respect to the visualization of the patient's anatomy, monitoring the number or medical imaging devices being utilized (i.e., that are activated and paired with thesurgical hub 106, 206), and monitoring the types of visualization devices utilized. For example, one technique for performing a VATS lobectomy places the camera in the lower anterior corner of the patient's chest cavity above the diaphragm, whereas one technique for performing a VATS segmentectomy places the camera in an anterior intercostal position relative to the segmental fissure. Using pattern recognition or machine learning techniques, for example, the situational awareness system can be trained to recognize the positioning of the medical imaging device according to the visualization of the patient's anatomy. As another example, one technique for performing a VATS lobectomy utilizes a single medical imaging device, whereas another technique for performing a VATS segmentectomy utilizes multiple cameras. As yet another example, one technique for performing a VATS segmentectomy utilizes an infrared light source (which can be communicably coupled to the surgical hub as part of the visualization system) to visualize the segmental fissure, which is not utilized in a VATS lobectomy. By tracking any or all of this data from the medical imaging device, thesurgical hub - Ninth step 5218, the surgical team begins the dissection step of the procedure. The
surgical hub surgical hub -
Tenth step 5220, the surgical team proceeds to the ligation step of the procedure. Thesurgical hub surgical hub -
Eleventh step 5222, the segmentectomy portion of the procedure is performed. Thesurgical hub surgical hub - Twelfth step 5224, the node dissection step is then performed. The
surgical hub surgical hub -
Thirteenth step 5226, the patient's anesthesia is reversed. Thesurgical hub - Lastly, the
fourteenth step 5228 is that the medical personnel remove the various patient monitoring devices from the patient. Thesurgical hub surgical hub surgical hub - Situational awareness is further described in U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, the disclosure of which is herein incorporated by reference in its entirety. In certain instances, operation of a robotic surgical system, including the various robotic surgical systems disclosed herein, for example, can be controlled by the
hub cloud 104. - Robotic surgical systems can be used in minimally invasive medical procedures. During such medical procedures, a patient can be placed on a platform adjacent to a robotic surgical system, and a surgeon can be positioned at a console that is remote from the platform and/or from the robot. For example, the surgeon can be positioned outside the sterile field that surrounds the surgical site. The surgeon provides input to a user interface via an input device at the console to manipulate a surgical tool coupled to an arm of the robotic system. The input device can be a mechanical input devices such as control handles or joysticks, for example, or contactless input devices such as optical gesture sensors, for example.
- The robotic surgical system can include a robot tower supporting one or more robotic arms. At least one surgical tool (e.g. an end effector and/or endoscope) can be mounted to the robotic arm. The surgical tool(s) can be configured to articulate relative to the respective robotic arm via an articulating wrist assembly and/or to translate relative to the robotic arm via a linear slide mechanism, for example. During the surgical procedure, the surgical tool can be inserted into a small incision in a patient via a cannula or trocar, for example, or into a natural orifice of the patient to position the distal end of the surgical tool at the surgical site within the body of the patient. Additionally or alternatively, the robotic surgical system can be employed in an open surgical procedure in certain instances.
- A schematic of a robotic
surgical system 15000 is depicted inFIG. 22 . The roboticsurgical system 15000 includes acentral control unit 15002, a surgeon'sconsole 15012, arobot 15022 including one or morerobotic arms 15024, and aprimary display 15040 operably coupled to thecontrol unit 15002. The surgeon'sconsole 15012 includes adisplay 15014 and at least one manual input device 15016 (e.g., switches, buttons, touch screens, joysticks, gimbals, etc.) that allow the surgeon to telemanipulate therobotic arms 15024 of therobot 15022. The reader will appreciate that additional and alternative input devices can be employed. - The
central control unit 15002 includes aprocessor 15004 operably coupled to amemory 15006. Theprocessor 15004 includes a plurality of inputs and outputs for interfacing with the components of the roboticsurgical system 15000. Theprocessor 15004 can be configured to receive input signals and/or generate output signals to control one or more of the various components (e.g., one or more motors, sensors, and/or displays) of the roboticsurgical system 15000. The output signals can include, and/or can be based upon, algorithmic instructions which may be pre-programmed and/or input by the surgeon or another clinician. Theprocessor 15004 can be configured to accept a plurality of inputs from a user, such as the surgeon at theconsole 15012, and/or may interface with a remote system. Thememory 15006 can be directly and/or indirectly coupled to theprocessor 15004 to store instructions and/or databases. - The
robot 15022 includes one or morerobotic arms 15024. Eachrobotic arm 15024 includes one ormore motors 15026 and eachmotor 15026 is coupled to one ormore motor drivers 15028. For example, themotors 15026, which can be assigned to different drivers and/or mechanisms, can be housed in a carriage assembly or housing. In certain instances, a transmission intermediate amotor 15026 and one ormore drivers 15028 can permit coupling and decoupling of themotor 15026 to one ormore drivers 15028. Thedrivers 15028 can be configured to implement one or more surgical functions. For example, one ormore drivers 15028 can be tasked with moving arobotic arm 15024 by rotating therobotic arm 15024 and/or a linkage and/or joint thereof. Additionally, one ormore drivers 15028 can be coupled to asurgical tool 15030 and can implement articulating, rotating, clamping, sealing, stapling, energizing, firing, cutting, and/or opening, for example. In certain instances, thesurgical tools 15030 can be interchangeable and/or replaceable. Examples of robotic surgical systems and surgical tools are further described herein. - The reader will readily appreciate that the computer-implemented interactive surgical system 100 (
FIG. 1 ) and the computer-implemented interactive surgical system 200 (FIG. 9 ) can incorporate the roboticsurgical system 15000. Additionally or alternatively, the roboticsurgical system 15000 can include various features and/or components of the computer-implemented interactivesurgical systems - In one exemplification, the robotic
surgical system 15000 can encompass the robotic system 110 (FIG. 2 ), which includes the surgeon'sconsole 118, thesurgical robot 120, and therobotic hub 122. Additionally or alternatively, the roboticsurgical system 15000 can communicate with another hub, such as thesurgical hub 106, for example. In one instance, the roboticsurgical system 15000 can be incorporated into a surgical system, such as the computer-implemented interactive surgical system 100 (FIG. 1 ) or the computer-implemented interactive surgical system 200 (FIG. 9 ), for example. In such instances, the roboticsurgical system 15000 may interact with thecloud 104 or thecloud 204, respectively, and thesurgical hub 106 or thesurgical hub 206, respectively. In certain instances, a robotic hub or a surgical hub can include thecentral control unit 15002 and/or thecentral control unit 15002 can communicate with a cloud. In other instances, a surgical hub can embody a discrete unit that is separate from thecentral control unit 15002 and which can communicate with thecentral control unit 15002. - Another robotic surgical system is the VERSIUS® robotic surgical system by Cambridge Medical Robots Ltd. of Cambridge, England. An example of such a system is depicted in
FIG. 23 . Referring toFIG. 23 , the surgical robot includes anarm 14400 which extends from abase 14401. Thearm 14400 includes a number ofrigid limbs 14402 that are coupled together byrevolute joints 14403. The mostproximal limb 14402 a is coupled to thebase 14401 by a joint 14403a. The mostproximal limb 14402 a and the other limbs (e.g. limbs joints 14403. Awrist 14404 can be made up of four individual revolute joints. Thewrist 14404 couples one limb (e.g. limb 14402 b ) to the most distal limb (e.g. thelimb 14402 c inFIG. 23 ) of thearm 14400. The mostdistal limb 14402 c carries anattachment 14405 for asurgical tool 14406. Each joint 14403 of thearm 14400 has one ormore motors 14407, which can be operated to cause rotational motion at the respective joint, and one or more position and/ortorque sensors 14408, which provide information regarding the current configuration and/or load at that joint 14403. Themotors 14407 can be arranged proximally of thejoints 14403 whose motion they drive, so as to improve weight distribution, for example. For clarity, only some of the motors and sensors are shown inFIG. 23 . Thearm 14400 may be generally as described in Patent Application PCT/GB2014/053523 and International Patent Application Publication No. WO 2015/025140, titled DISTRIBUTOR APPARATUS WITH A PAIR OF INTERMESHING SCREW ROTORS, filed Aug. 18, 2014, which published on Feb. 26, 2015, and which is herein incorporated by reference in its entirety. Torque sensing is further described in U.S. Patent Application Publication No. 2016/0331482, titled TORQUE SENSING IN A SURGICAL ROBOTIC WRIST, filed May 13, 2016, which published on Nov. 17, 2016, which is herein incorporated by reference in its entirety. - The
arm 14400 terminates in theattachment 14405 for interfacing with thesurgical tool 14406. Theattachment 14405 includes a drive assembly for driving articulation of thesurgical tool 14406. Movable interface elements of a drive assembly interface mechanically to engage corresponding movable interface elements of the tool interface in order to transfer drive motions from therobot arm 14400 to thesurgical tool 14406. One surgical tool may be exchanged for another surgical tool one or more times during a typical operation. Thesurgical tool 14406 can be attachable and detachable from therobot arm 14400 during the operation. Features of the drive assembly interface and the tool interface can aid in their alignment when brought into engagement with each other, so as to reduce the accuracy with which they need to be aligned by the user. A bar for guiding engagement of a robotic arm and surgical tool is further described in U.S. Patent Application Publication No. 2017/0165012, titled GUIDING ENGAGEMENT OF A ROBOT ARM AND SURGICAL INSTRUMENT, filed Dec. 9, 2016, which published on Jun. 15, 2017, which is herein incorporated by reference in its entirety. - The
surgical tool 14406 further includes an end effector for performing an operation. The end effector may take any suitable form. For example, the end effector may include smooth jaws, serrated jaws, a gripper, a pair of shears, a needle for suturing, a camera, a laser, a knife, a stapler, one or more electrodes, an ultrasonic blade, a cauterizer, and/or a suctioner. Alternative end effectors are further described herein. Thesurgical tool 14406 can include an articulation junction between the shaft and the end effector, which can permit the end effector to move relative to the shaft of the tool. The joints in the articulation junction can be actuated by driving elements, such as pulley cables. Pulley arrangements for articulating thesurgical tool 14406 are described in U.S. Patent Application Publication No. 2017/0172553, titled PULLEY ARRANGEMENT FOR ARTICULATING A SURGICAL INSTRUMENT, filed Dec. 9, 2016, which published on Jun. 22, 2017, which is herein incorporated by reference in its entirety. The driving elements for articulating thesurgical tool 14406 are secured to the interface elements of the tool interface. Thus, therobot arm 14400 can transfer drive motions to the end effector as follows: movement of a drive assembly interface element moves a tool interface element, which moves a driving element in thetool 14406, which moves a joint of the articulation junction, which moves the end effector. Control of a robotic arm and tool, such as thearm 14400 and thetool 14406, are further described in U.S. Patent Application Publication No. 2016/0331482, titled TORQUE SENSING IN A SURGICAL ROBOTIC WRIST, filed May 13, 2016 and which was published on Nov. 17, 2016, and in International Patent Application Publication No. WO 2016/116753, titled ROBOT TOOL RETRACTION, filed Jan. 21, 2016 and which was published on Jul. 28, 2016, each of which is herein incorporated by reference in its entirety. - Controllers for the
motors 14407 and the sensors 14408 (e.g. torque sensors and encoders) are distributed within therobot arm 14400. The controllers are connected via a communication bus to acontrol unit 14409. Examples of communication paths in a robotic arm, such as thearm 14400, are further described in U.S. Patent Application Publication No. 2017/0021507, titled DRIVE MECHANISMS FOR ROBOT ARMS and in U.S. Patent Application Publication No. 2017/0021508, titled GEAR PACKAGING FOR ROBOTIC ARMS, each of which was filed Jul. 22, 2016 and published on Jan. 26, 2017, and each of which is herein incorporated by reference in its entirety. Thecontrol unit 14409 includes aprocessor 14410 and amemory 14411. Thememory 14411 can store software in a non-transient way that is executable by theprocessor 14410 to control the operation of themotors 14407 to cause thearm 14400 to operate in the manner described herein. In particular, the software can control theprocessor 14410 to cause the motors 14407 (for example via distributed controllers) to drive in dependence on inputs from thesensors 14408 and from asurgeon command interface 14412. - The
control unit 14409 is coupled to themotors 14407 for driving them in accordance with outputs generated by execution of the software. Thecontrol unit 14409 is coupled to thesensors 14408 for receiving sensed input from thesensors 14408, and to thecommand interface 14412 for receiving input from it. The respective couplings may, for example, each be electrical or optical cables, and/or may be provided by a wireless connection. Thecommand interface 14412 includes one or more input devices whereby a user can request motion of the end effector in a desired way. The input devices could, for example, be manually operable mechanical input devices such as control handles or joysticks, or contactless input devices such as optical gesture sensors. The software stored in thememory 14411 is configured to respond to those inputs and cause the joints of thearm 14400 and thetool 14406 to move accordingly, in compliance with a pre-determined control strategy. The control strategy may include safety features which moderate the motion of the arm 144400 and thetool 14406 in response to command inputs. In summary, a surgeon at thecommand interface 14412 can control thesurgical tool 14406 to move in such a way as to perform a desired surgical procedure. Thecontrol unit 14409 and/or thecommand interface 14412 may be remote from thearm 14400. - Additional features and operations of a surgical robot system, such as the robotic surgical system depicted in
FIG. 23 , are further described in the following references, each of which is herein incorporated by reference in its entirety: - International Patent Application Publication No. WO 2016/116753, titled ROBOT TOOL RETRACTION, filed Jan. 21, 2016, which published on Jul. 28, 2016;
- 1U.S. Patent Application Publication No. 2016/0331482, titled TORQUE SENSING IN A SURGICAL ROBOTIC WRIST, filed May 13, 2016, which published on Nov. 17, 2016;
-
- U.S. Patent Application Publication No. 2017/0021507, titled DRIVE MECHANISMS FOR ROBOT ARMS, filed Jul. 22, 2016, which published on Jan. 27, 2017;
- U.S. Patent Application Publication No. 2017/0021508, titled GEAR PACKAGING FOR ROBOTIC ARMS, filed Jul. 22, 2016, which published on Jan. 27, 2017;
- U.S. Patent Application Publication No. 2017/0165012, titled GUIDING ENGAGEMENT OF A ROBOT ARM AND SURGICAL INSTRUMENT, filed Dec. 9, 2016, which published on Jun. 15, 2017; and
- U.S. Patent Application Publication No. 2017/0172553, titled PULLEY ARRANGEMENT FOR ARTICULATING A SURGICAL INSTRUMENT, filed Dec. 9, 2016, which published on Jun. 22, 2017.
- In one instance, the robotic surgical systems and features disclosed herein can be employed with the VERSIUS® robotic surgical system and/or the robotic surgical system of
FIG. 23 . The reader will further appreciate that various systems and/or features disclosed herein can also be employed with alternative surgical systems including the computer-implemented interactivesurgical system 100, the computer-implemented interactivesurgical system 200, the roboticsurgical system 110, therobotic hub 122, therobotic hub 222, and/or the roboticsurgical system 15000, for example. - In various instances, a robotic surgical system can include a robotic control tower, which can house the control unit of the system. For example, the
control unit 14409 of the robotic surgical system depicted inFIG. 23 can be housed within a robotic control tower. The robotic control tower can include a robot hub such as the robotic hub 122 (FIG. 2 ) or the robotic hub 222 (FIG. 9 ), for example. Such a robotic hub can include a modular interface for coupling with one or more generators, such as an ultrasonic generator and/or a radio frequency generator, and/or one or more modules, such as an imaging module, a suction module, an irrigation module, a smoke evacuation module, and/or a communication module, for example. - The reader will readily appreciate that the computer-implemented interactive surgical system 100 (
FIG. 1 ) and the computer-implemented interactive surgical system 200 (FIG. 9 ) disclosed herein can incorporate therobotic arm 14400. Additionally or alternatively, the robotic surgical system depicted inFIG. 23 can include various features and/or components of the computer-implemented interactivesurgical systems - A robotic hub can include a situational awareness module, which can be configured to synthesize data from multiple sources to determine an appropriate response to a surgical event. For example, a situational awareness module can determine the type of surgical procedure, step in the surgical procedure, type of tissue, and/or tissue characteristics, as further described herein. Moreover, such a module can recommend a particular course of action or possible choices to the robotic system based on the synthesized data. In various instances, a sensor system encompassing a plurality of sensors distributed throughout the robotic system can provide data, images, and/or other information to the situational awareness module. Such a situational awareness module can be incorporated into a control unit, such as the
control unit 14409, for example. In various instances, the situational awareness module can obtain data and/or information from a non-robotic surgical hub and/or a cloud, such as thesurgical hub 106, thesurgical hub 206, thecloud 104, and/or thecloud 204, for example. Situational awareness of a surgical system is further disclosed herein and in U.S. Provisional Patent Application Ser. No. 62/611,341, titled INTERACTIVE SURGICAL PLATFORM, filed Dec. 28, 2017, and in U.S. Provisional Patent Application Ser. No. 62/611,340, titled CLOUD-BASED MEDICAL ANALYTICS, filed Dec. 28, 2017, the disclosure of each of which is herein incorporated by reference in its entirety. - Referring again to
FIG. 23 , therobotic arm 14400 does not include a linear slide mechanism for moving the attachedsurgical tool 14406 along a longitudinal axis of thetool 14406. Rather, thelimbs 14402 of thearm 14400 are configured to rotate about thevarious joints 14403 of thearm 14400 to move thesurgical tool 14406. In other words, even movement of thesurgical tool 14406 along the longitudinal axis AT thereof requires the articulation ofvarious limbs 14402. For example, to move thesurgical tool 14406 along the longitudinal axis AT, therobotic arm 14400 would move at multiplerevolute joints 14403 thereof. In effect, linear displacement of thetool 14406 for extending the end effector through a trocar, retracting the end effector from the trocar, and/or for localized displacements of thesurgical tool 14406 along the longitudinal axis AT, such as during a suturing process, for example, would require the actuation of multiplerevolute joints 14403 and the corresponding movement of multiplerigid limb portions 14402 of thearm 14400. - In instances in which a robotic surgical system lacks a linear slide mechanism, as described herein, intelligent sensing systems, additional communication paths, and/or interactive displays can enable more precise control of the robotic arm including the implementation of control motions that involve a linear displacement of the surgical tool along an axis thereof. For example, to ensure the accurate positioning of the
tool 14406 and to avoid inadvertent collisions within an operating room, it may be desirable to include additional systems in the robotic system for determining the position of asurgical tool 14406 and/or portions of therobotic arm 14400, for repositioning of therobotic arm 14400 from within the sterile field, for communicating the position of thesurgical tool 14406 relative to the surgical site, for visualizing thesurgical tool 14406 at the surgical site, and/or for manipulating thesurgical tool 14406 around the surgical site, for example. - In one aspect, a robotic surgical system can include a primary control mechanism for positioning the tool and a secondary means for directly and/or independently measuring the position of the tool. In one aspect, a redundant or secondary sensing system can be configured to determine and/or verify a position of a robotic arm and/or a surgical tool attached to the robotic arm. The secondary sensing system can be independent of a primary sensing system.
- In one instance, the primary control mechanism can rely on closed-loop feedback to calculate the position of the tool. For example, a control unit of a robotic surgical system can issue control motions for the robotic arm, including the various motors and/or drivers thereof to move portions of the robotic arm in a three-dimensional space, as further described herein. Such a control unit can determine the position and/or orientation of the portions of the robotic arm based on torque sensors on the motors and/or displacement sensors on the drivers, for example. In such instances, the position of the surgical tool, the end effector, and/or components thereof can be determined by proximally-located sensors. The proximally-located sensors can be located in a proximal housing or mounting portion of the tool and/or the robotic arm. In one instance, such proximally-located sensors can be positioned outside the sterile field, for example. The position of a surgical tool mounted to a robotic arm can be determined by measuring the angle(s) of each joint of the arm, for example. The control unit and sensors in communication therewith, which determine the position of the arm based on the control motions delivered thereto, can be considered a primary or first sensing system of the robotic surgical system.
- In addition to a primary sensing system, as described herein, a redundant or secondary sensing system can be employed by the robotic surgical system. The secondary sensing system can include one or more distally-located sensors. The distally-located sensors can be positioned within the sterile field and/or on the end effector, for example. The distally-located sensors are distal to the proximally-located sensors of the primary sensing system, for example. In one instance, the distally-located sensors can be “local” sensors because they are local to the sterile field and/or the surgical site, and the proximally-located sensors can be “remote” sensors because they are remote from the sterile field and/or the surgical site.
- Referring now to
FIG. 31 , portions of a roboticsurgical system 14300 are schematically depicted. The roboticsurgical system 14300 is similar in many respects to the robotic surgical system ofFIG. 23 . For example, the roboticsurgical system 14300 includes a plurality ofmovable components 14302. In one aspect, themovable components 14302 are rigid limbs that are mechanically coupled in series at revolute joints. Suchmoveable components 14302 can form a robotic arm, similar to the robotic arm 14440 (FIG. 23 ), for example. Thedistal-most component 14302 includes an attachment for releasably attaching interchangeable surgical tools, such as thesurgical tool 14306, for example. Eachcomponent 14302 of the robotic arm has one ormore motors 14307 andmotor drivers 14314, which can be operated to affect rotational motion at the respective joint. - Each
component 14302 includes one ormore sensors 14308, which can be position sensors and/or torque sensors, for example. Thesensors 14308 can provide information regarding the current configuration and/or load at the respective joint between thecomponents 14402. Themotors 14307 can be controlled by acontrol unit 14309, which is configured to receive inputs from thesensors 14308 and/or from a surgical command interface, such as surgical command interface 14412 (FIG. 23 ), for example. - A
primary sensing system 14310 is incorporated into thecontrol unit 14309. In one aspect, theprimary sensing system 14310 can be configured to detect the position of one ormore components 14302. For example, theprimary sensing system 14310 can include thesensors 14308 for the motors 14307and/or thedrivers 14314.Such sensors 14308 are remote from the patient P and located outside of the sterile field. Though located outside of the sterile field, theprimary sensing system 14310 can be configured to detect the position(s) of the component(s) 14302 and/or thetool 14306 within the sterile field, such as at the position of the distal end of the robotic arm and/or the attachment portion thereof. Based on the position of the robotic arm andcomponents 14302 thereof, thecontrol unit 14309 can extrapolate the position of thesurgical tool 14306, for example. - The robotic
surgical system 14300 ofFIG. 31 also includes asecondary sensing system 14312 for directly tracking the position and/or orientation or various parts of the roboticsurgical system 14300 and/or parts of an associated, non-robotic system such as handheldsurgical instruments 14350. Referring still toFIG. 31 , thesecondary sensing system 14312 includes a magnetic field emitter 14320 that is configured to emit a magnetic field in the vicinity of one or more magnetic sensors to detect the positions thereof.Components 14302 of the robotic arm includemagnetic sensors 14322, which can be utilized to determine and/or verify the position of therespective components 14302. Themagnetic sensors 14322 are remote to themotors 14307 and thedrivers 14308, for example. In any event, the torque through the motor and/or the displacement of a driver may not affect the output from the magnetic sensors. Consequently, the sensing systems are independent. - In certain instances, the
magnetic sensors 14322 can be positioned within the sterile field. For example, thesurgical tool 14306 can include themagnetic sensor 14324, which can be utilized to determine and/or verify the position of thesurgical tool 14306 attached to the robotic arm and/or to determine and/or verify the position of a component of thesurgical tool 14306, such as a firing element, for example. Additionally or alternatively, one or more patient sensors 14326 can be positioned within the patient P to measure the patient's location and/or anatomic orientation. Additionally or alternatively, one ormore trocar sensors 14328 can be positioned on atrocar 14330 to measure the trocar's location and/or orientation, for example. - Referring again to the
robotic arm 14400 depicted inFIG. 23 , thesurgical tool 14406 is attached to theattachment portion 14405 at the distal end of therobotic arm 14400. When thesurgical tool 14406 is positioned within a trocar, the robotic surgical system can establish a virtual pivot which can be fixed by the robotic surgical system, such that thearm 14400 and/or thesurgical tool 14406 can be manipulated thereabout to avoid and/or minimize the application of lateral forces to the trocar. In certain instances, applying force(s) to the trocar may damage the surrounding tissue, for example. Thus, to avoid inadvertent damage to tissue, therobotic arm 14400 and/or thesurgical tool 14406 can be configured to move about the virtual pivot of the trocar without upsetting the position thereof and, thus, without upsetting the corresponding position of the trocar. Even when applying a linear displacement of thesurgical tool 14406 to enter or exit the trocar, the virtual pivot can remain undisturbed. - In one aspect, the trocar sensor(s) 14328 in
FIG. 31A can be positioned at avirtual pivot 14332 on thetrocar 14330. In other instances, thetrocar sensors 14328 can be adjacent to thevirtual pivot 14332. Placement of thetrocar sensors 14328 at and/or adjacent to thevirtual pivot 14332 thereof can track the position of thetrocar 14330 andvirtual pivot 14332 and help to ensure that thetrocar 14330 does not move during displacement of thesurgical tool 14306, for example. In such instances, without physically engaging or holding thetrocar 14330, the roboticsurgical system 14300 can confirm and/or maintain the location of thetrocar 14330. For example, thesecondary sensing system 14312 can confirm the location of thevirtual pivot 14332 of thetrocar 14330 and thesurgical tool 14306 relative thereto. - Additionally or alternatively, one or
more sensors 14352 can be positioned on one or more handheldsurgical instruments 14350, which can be employed during a surgical procedure in combination with thesurgical tools 14306 utilized by the roboticsurgical system 14300. Thesecondary sensing system 14312 is configured to detect the position and/or orientation of one or more handheldsurgical instruments 14350 within the surgical field, for example, within the operating room and/or sterile field. Such handheldsurgical instruments 14350 can include autonomous control units, which may not be robotically controlled, for example. As depicted inFIG. 31 , the handheldsurgical instruments 14350 can includesensors 14352, which can be detected by the magnetic field emitter 14320, for example, such that the position and/or location of the handheldsurgical instruments 14350 can be ascertained by the roboticsurgical system 14300. In other instances, components of the handheldsurgical instruments 14350 can provide a detectable output. For example, a motor and/or battery pack can be detectable by a sensor in the operating room. - In one aspect, the magnetic field emitter 14320 can be incorporated into a main robot tower. The
sensors display 14340, such that the position of the various components of the surgical robot,surgical tool 14302,trocar 14330, patient P, and/or handheldsurgical instruments 14350 can be overlaid onto a real-time view of the surgical site, such as views obtained by an endoscope at the surgical site. For example, thedisplay 14340 can be in signal communication with the control unit of the robotic surgical system and/or with a robotic hub, such as thehub 106,robotic hub 122, thehub 206, and/or the robot hub 222 (FIG. 9 ), for example. - In other instances, the magnetic field emitter 14320 can be external to the robot control tower. For example, the magnetic field emitter 14320 can be incorporated into a hub.
- Similar to the
secondary sensing system 14312, which includes the magnetic field emitter 14320, in certain instances, time-of-flight sensors can be positioned on one or more of the robot component(s) 14302, the surgical tool(s) 14306, the patient P, the trocar(s) 14328, and/or the handheld surgical instrument(s) 14350 to provide an array of distances between the emitter and the reflector points. Such time-of-flight sensors can provide primary or secondary (e.g. redundant) sensing of the position of the robot component(s) 14302, the surgical tool(s) 14306, the patient P, the trocar(s) 14328, and/or the handheld surgical instrument(s) 14350, for example. In one instance, the time-of-flight sensor(s) can employ an infrared light pulse to provide distance mapping and/or facilitate 3D imaging within the sterile field. - In one instance, the
secondary sensing system 14312 can include a redundant sensing system that is configured to confirm the position of the robotic components and/or tools. Additionally or alternatively, thesecondary sensing system 14312 can be used to calibrate theprimary sensing system 14310. Additionally or alternatively, thesecondary sensing system 14312 can be configured to prevent inadvertent entanglement and/or collisions between robotic arms and/or components of a robotic surgical system. - Referring again to
FIG. 31 , in one instance, thecomponents 14302 of the roboticsurgical system 14300 can correspond to discrete robotic arms, such as therobotic arms 15024 in the robotic surgical system 15000 (FIG. 22 ) and/or the robotic arms depicted inFIG. 2 , for example. Thesecondary sensing system 14312 can be configured to detect the position of the robotic arms and/or portions thereof as the multiple arms are manipulated around the surgical theater. In certain instances, as one or more arms are commanded to move towards a potential collision, thesecondary sensing system 14312 can alert the surgeon via an alarm and/or an indication at the surgeon's console in order to prevent an inadvertent collision of the arms. - Referring now to
FIG. 32 , a flow chart for a robotic surgical system is depicted. The flow chart can be utilized by the robotic surgical system 14300 (FIG. 31 ), for example. In various instances, two independent sensing systems can be configured to detect the location and/or orientation of a surgical component, such as a portion of a robotic arm and/or a surgical tool. The first sensing system, or primary sensing system, can rely on the torque and/or load sensors on the motors and/or motor drivers of the robotic arm. The second sensing system, or secondary sensing system, can rely on magnetic and/or time-of-flight sensors on the robotic arm and/or surgical tool. The first and second sensing systems are configured to operate independently and in parallel. For example, atstep 14502, the first sensing system determines the location and orientation of a robotic component and, atstep 14504, communicates the detected location and orientation to a control unit. Concurrently, atstep 14506, the second sensing system determines the location and orientation of the robotic component and, atstep 14508, communicates the detected location and orientation to the control unit. - The independently-ascertained locations and orientations of the robotic component are communicated to a central control unit at
step 14510, such as to therobotic control unit 14309 and/or a surgical hub. Upon comparing the locations and/or orientations, the control motions for the robotic component can be optimized atstep 14512. For example, discrepancies between the independently-determined positions can be used to improve the accuracy and precision of control motions. In certain instances, the control unit can calibrate the control motions based on the feedback from the secondary sensing system. The data from the primary and secondary sensing systems can be aggregated by a hub, such as thehub 106 or thehub 206, for example, and/or data stored in a cloud, such as thecloud 104 or thecloud 204, for example, to further optimize the control motions of the robotic surgical system. - In certain instances, the
robotic system 14300 can be in signal communication with a hub, such as thehub 106 of thehub 206, for example. Thehubs first sensor system 14310 and thesecond sensor system 14312 are data sources for the situational awareness module. For example, thesensor systems hub robotic arm 14300 and/or thesurgical tool 14306 based on the data from the sensor systems in combination with the situational awareness, for example. In one aspect, a sensing system, such as thesecondary sensing system 14312 can inform thehub surgical instrument 14350 has entered the operating room or surgical theater and/or when an end effector has been fired, for example. Based on such information, thehub - The reader will appreciate that various independent and redundant sensing systems disclosed herein can be utilized by a robotic surgical system to improve the accuracy of the control motions, especially when moving the surgical tool along a longitudinal axis without relying on a linear slide mechanism, for example.
- In one aspect, the surgical hub includes a processor and a memory communicatively coupled to the processor, as described herein. The memory stores instructions executable by the processor to detect a position of a robotically-controlled component independent of a primary sensing system, as described above.
- In various aspects, the present disclosure provides a control circuit configured to detect a position of a robotically-controlled component independent of a primary sensing system, as described above. In various aspects, the present disclosure provides a non-transitory computer readable medium storing computer readable instructions which, when executed, cause a machine to detect a position of a robotically-controlled component independent of a primary sensing system, as described above.
- In one aspect, a robotic surgical system can be configured to wirelessly communicate with one or more intelligent surgical tools mounted to a robotic arm thereof. The control unit of the robotic system can communicate with the one or more intelligent surgical tools via a wireless connection, for example. Additionally or alternatively, the robotic surgical system can include a robotic hub, which can wirelessly communicate with the intelligent surgical tool(s) mounted to the robotic arm(s). In still other instances, a non-robotic surgical hub can wirelessly communicate with the intelligent surgical tool(s) mounted to a robotic arm. In certain instances, information and/or commands can be provided to the intelligent surgical tool(s) from the control unit via the wireless connection. For example, certain functions of a surgical tool can be controlled via data received through a wireless communication link on the surgical tool. Similarly, in one aspect, closed-loop feedback can be provided to the robotic surgical system via data received via the wireless communication link to the surgical tool.
- Referring primarily to
FIGS. 28-30 , asurgical tool 14206 is mounted to arobotic arm 14000 of a surgical robot. Therobotic arm 14000 is similar in many respects to therobotic arm 14400 inFIG. 23 . For example, thearm 14000 includes a plurality ofmovable components 14002. In one aspect, themovable components 14002 are rigid limbs that are mechanically coupled in series atrevolute joints 14003. Suchmoveable components 14002 form therobotic arm 14400, similar to the arm 14400 (FIG. 23 ), for example. Adistal-most component 14002 c of therobotic arm 14400 includes anattachment 14005 for releasably attaching interchangeable surgical tools, such as thesurgical tool 14206. Eachcomponent 14002 of thearm 14000 has one or more motors and motor drivers, which can be operated to affect rotational motion at therespective joint 14003. - Each
component 14002 includes one or more sensors, which can be position sensors and/or torque sensors, for example, and can provide information regarding the current configuration and/or load at the respective joint between thecomponents 14002. The motors can be controlled by a control unit, such as the control unit 14409 (FIG. 23 ), which is configured to receive inputs from the sensors 14008 and/or from a command interface, such as the surgeon's command console 14412 (FIG. 23 ), for example. - The
surgical tool 14206 is a linear stapler including a wireless communication module 14208 (FIG. 29 ). The linear stapler can be an intelligent linear stapler and can include an intelligent fastener cartridge, an intelligent end effector, and/or an intelligent shaft, for example. Intelligent surgical components can be configured to determine various tissue properties, for example. In one instance, one or more advanced end effector functions may be implemented based on the detected tissue properties. A surgical end effector can include one or more sensors for determining tissue thickness, compression, and/or impedance, for example. Moreover, certain sensed parameters can indicate tissue variations, such as the location of a tumor, for example. Intelligent surgical devices for sensing various tissue properties are further disclosed the following references: -
- U.S. Pat. No. 9,757,128, filed Sep. 5, 2014, titled MULTIPLE SENSORS WITH ONE SENSOR AFFECTING A SECOND SENSOR'S OUTPUT OR INTERPRETATION, which issued on Sep. 12, 2017;
- U.S. patent application Ser. No. 14/640,935, titled OVERLAID MULTI SENSOR RADIO FREQUENCY (RF) ELECTRODE SYSTEM TO MEASURE TISSUE COMPRESSION, filed Mar. 6, 2015, now U.S. Patent Application Publication No. 2016/0256071, which published on Sep. 8, 2016;
- U.S. patent application Ser. No. 15/382,238, titled MODULAR BATTERY POWERED HANDHELD SURGICAL INSTRUMENT WITH SELECTIVE APPLICATION OF ENERGY BASED ON TISSUE CHARACTERIZATION, filed Dec. 16, 2016, now U.S. Patent Application Publication No. 2017/0202591, which published on Jul. 20, 2017; and
- U.S. patent application Ser. No. 15/237,753, titled CONTROL OF ADVANCEMENT RATE AND APPLICATION FORCE BASED ON MEASURED FORCES, filed Aug. 16, 2016, now U.S. Patent Application Publication No. 2018/0049822, which published on Feb. 22, 2018;
each of which is herein incorporated by reference in its entirety.
- As depicted in
FIG. 28 , awireless communication link 14210 is provided between thesurgical tool 14206 and ahub 14212. Thehub 14212 is a surgical hub, like thehub 106 or thehub 206, for example. In other instances, thehub 14212 can be a robotic hub, like therobotic hub 122 or therobotic hub 222, for example. InFIG. 28 , thewireless communication module 14208 includes a wireless signal transmitter that is located near the distal end of the end effector of thesurgical tool 14206. In other instances, the wireless transmitter can be positioned on a proximal portion of the end effector or on the shaft of thesurgical tool 14206. - The
wireless communication link 14212 between thesurgical tool 14206 and thesurgical hub 14212 provides real-time data transfer through asterile barrier 14230. Additionally or alternatively, thewireless communication module 14208 can be configured to communicate with a robot control tower and/or the control unit, which issues the control motions to therobotic arm 14000 and actuations to thesurgical tool 14206 based on inputs at the surgeon's command console. In certain instances, the control unit for therobotic arm 14000 can be incorporated into thesurgical hub 14212 and/or a robotic hub, such as the robotic hub 122 (FIG. 2 ) or the robotic hub 222 (FIG. 9 ), for example. - In certain instances, it can be difficult to confirm the position of the
surgical tool 14206 within the surgical theater, around the surgical site, and/or relative to the targeted tissue. For example, lateral displacement of thesurgical tool 14206 can be constrained by a physical boundary, such as a longitudinally-extending trocar, for example. In such instances, lateral displacement of thesurgical tool 14206 can be determined by a resistance force from and/or on the trocar. Conversely, linear displacement of thesurgical tool 14206 can be unconstrained by physical boundaries of the surgical system. In such instances, when the control unit directs linear displacement of thesurgical tool 14206 or a portion thereof, and the variousmovable links 14002 andjoints 14003 articulate to affect the linear displacement, it can be difficult to determine and/or confirm the position of thesurgical tool 14206 and respective portions thereof. - When the
surgical tool 14206 is moved along the longitudinal axis of the tool AT (FIG. 29 ), which is collinear with the shaft of thesurgical tool 14206, it can be difficult to determine and/or confirm the exact position of thesurgical tool 14206. In certain instances, as provided herein, the robotic surgical system can include a secondary sensing system, which is configured to detect the position of thesurgical tool 14206. For example, thewireless communication module 14208 can be in signal communication with a secondary sensing system, such as the secondary sensing system 14312 (FIG. 31 ) and/or a sensor thereof. Moreover, thewireless communication module 14208 can communicate the position of thesurgical tool 14206, as detected by thesecondary sensing system 14312, to thesurgical hub 14212 via thewireless communication link 14210. Additionally or alternatively, thewireless communication module 14208 can communicate information from the various sensors and/or systems of the intelligentsurgical tool 14206 to thesurgical hub 14212. Thesurgical hub 14212 can disseminate the information to displays within the operating room or external displays, to a cloud, and/or to one or more hubs and/or control units used in connection with the surgical procedure. - Referring primarily to
FIG. 29 , in one instance, thesurgical tool 14206 can be employed to remove acancerous tumor 14242 from patient tissue T. To ensure complete removal of thetumor 14242 while minimizing the removal of healthy tissue, apredefined margin zone 14240 can be defined around thetumor 14242. The margin zone can be determined by the surgeon based on patient data, aggregated data from a hub and/or a cloud, and/or data sensed by one or more intelligent components of the surgical system, for example. During the operation, thesurgical tool 14206 can transect the tissue T along themargin zone 14240 such that themargin zone 14240 is removed along with thetumor 14242. The primary andsecondary sensing systems 14310 and 14312 (FIG. 31 ) can determine the position of thesurgical tool 14206 relative to the margin zone, for example. Moreover, thewireless communication module 14208 can communicate the detected position(s) to the control unit. - In certain instances, the robotic system of
FIGS. 28-30 can be configured to actuate (e.g. fire) thesurgical tool 14206 when thesurgical tool 14206 moves within themargin zone 14240. For example, referring primarily toFIG. 30 , a graphical display 14250 of distance and force-to-close over time for thelinear stapler 14206 during the surgical procedure ofFIG. 28 is depicted. As thesurgical tool 14206 approaches themargin zone 14240 at time t1, the force-to-close (FTC) increases indicating that thesurgical tool 14206 is being clamped on tissue T around thetumor 14242 between time t1 and time t2. More specifically, thesurgical tool 14206 is clamped when moved into position a distance between distances D1 and D2. The distance D1 can refer to the outer boundary of themargin zone 14240 around thetumor 14242, for example, and the distance D2 can refer to the inner boundary of themargin zone 14240, which can be assumed boundary of thetumor 14242, for example. - In various instances, the control unit and the processor thereof can automatically affect the clamping motion when the
surgical tool 14206 is positioned at the appropriate distance based on input from a primary sensing system and/or a secondary sensing system. In other instances, the control unit and the processor thereof can automatically alert the surgeon that thesurgical tool 14206 is positioned at the appropriate distance. Similarly, in certain instances, the processor can automatically fire thesurgical tool 14206 and/or suggest to the surgeon that thesurgical tool 14206 be fired based on the detected position(s) of thesurgical tool 14206. The reader will readily appreciate that other actuation motions are envisioned, such as energizing an energy tool and/or articulating and articulatable end effector, for example. - In certain instances, the
hub 14212 can include a situational awareness system, as further described herein. In one aspect, the position of thetumor 14242 and/or themargin zone 14240 therearound can be determined by the situational awareness system or module of thehub 14212. In certain instances, thewireless communication module 14208 can be in signal communication with the situational awareness module of thehub 14212. For example, referring again toFIG. 33 , the stapler data and/or the cartridge data provided atsteps wireless communication module 14208 of thestapling tool 14206, for example. - In one aspect, sensors positioned on the
surgical tool 14206 can be utilized to determine and/or confirm the position of the surgical tool 14206 (i.e. a secondary sensing system). Moreover, the detected position of the linear stapler can be communicated to thesurgical hub 14212 across thewireless communication link 14210, as further described herein. In such instances, thesurgical hub 14212 can obtain real-time, or near real-time, information regarding the position of thesurgical tool 14206 relative to thetumor 14242 and themargin zone 14240 based on the data communicated via thewireless communication link 14210. In various instances, the robotic surgical system can also determine the position of thesurgical tool 14206 based on the motor control algorithms utilized to position therobotic arm 14000 around the surgical theater (i.e. a primary sensing system). - In one aspect, a robotic surgical system can integrate with an imaging system. Real-time feeds from the surgical site, which are obtained by the imaging system, can be communicated to the robotic surgical system. For example, referring again to
FIGS. 2 and 3 , real-time feeds from theimaging module 138 in thehub 106 can be communicated to the roboticsurgical system 110. For example, the real-time feeds can be communicated to therobotic hub 122. In various instances, the real-time feed can be overlaid onto one or more active robot displays, such as the feeds at the surgeon'scommand console 118. Overlaid images can be provided to one or more displays within the surgical theater, such as thedisplays - In certain instances, the overlay of real-time feeds onto a robot display can enable the surgical tools to be precisely controlled within an axes system that is defined by the surgical tool and/or the end effector(s) thereof as visualized by the real-time imaging system. In various instances, cooperating between the robotic
surgical system 110 and theimaging system 138 can provide triangulation and instrument mapping of the surgical tools within the visualization field, which can enable precise control of the tool angles and/or advancements thereof. Moreover, shifting control from a standard multi-axes, fixed Cartesian coordinate system to the axis defined by the currently-mounted tool and/or to the end effector thereof can enable the surgeon to issue commands along clear planes and/or axes. For example, a processor of the robotic surgical system can direct a displacement of a surgical tool along the axis of the elongate shaft of the surgical tool or a rotation of the surgical tool at a specific angle from the current position based on a selected point to rotate about. In one exemplification, the overlaid feed of a surgical tool can incorporate a secondary or redundant sensing system, as further described herein, to determine the location and/or orientation of the surgical tool. - In certain instances, a robotic arm, such as the robotic arm 14400 (
FIG. 23 ) can be significantly heavy. For example, the weight of a robotic arm can be such that manually lifting or repositioning the robotic arm is difficult for most able-bodied clinicians. Moreover, the motors and drive mechanisms of the robotic arm may only be controlled by a primary control system located at the control unit based on inputs from the surgeon's command console. Stated differently, a robotic surgical system, such as the system depicted inFIG. 23 , for example, may not include a secondary control system for therobotic arm 14400 that is local to therobotic arm 14400 and within the sterile field. - A robotic arm in a robotic surgical system may be prone to inadvertent collisions with equipment and/or people within the sterile field. For example, during a surgical procedure, surgeon(s), nurse(s), and/or medical assistant(s) positioned within the sterile field may move around the sterile field and/or around the robotic arms. In certain instances, the surgeon(s), nurse(s), and/or medical assistant(s), for example, may reposition equipment within the sterile field, such as tables and/or carts, for example. When a surgeon positioned outside of the sterile field is controlling the robotic arm, another surgeon, nurse, and/or medical assistant positioned within the sterile field may also want to manually move and/or adjust the position of one of more robotic arms in order to avoid a potential collision with the arm(s), entanglement of the arm with other equipment and/or other arms, and/or to replace, reload, and/or reconfigure a surgical tool mounted to the arm. However, to reposition the robotic arm, the surgeon may need to power down the robotic surgical system to enable the clinician within the sterile field to manually reposition the robotic arm. In such instances, the clinician can be required to carry the significant weight of the unpowered, or powered down, robotic arm.
- In one instance, a robotic surgical system can include an interactive display that is local to the sterile field and/or local to the robotic arm(s). Such a local display can facilitate manipulation and/or positioning of the arm(s) by a clinician within the sterile field. Stated differently, an operator other than the surgeon at the command console can control the position of the robotic arm(s).
- Referring now to
FIG. 24 , a clinician is applying a force to therobotic arm 14000 to manually adjust the position of therobotic arm 14000. In certain instances, the robotic surgical system employing therobotic arm 14000 can employ a passive power assist mode, in which therobotic arm 14400 can easily be repositioned by a clinician within the sterile field. For example, though therobotic arm 14000 is powered and is controlled by a remote control unit, the clinician can manually adjust the position of therobotic arm 14000 without requiring the clinician to carry the entire weight of therobotic arm 14000. The clinician can pull and/or push therobotic arm 14000 to adjust the position thereof. In the passive power assist mode, the power to therobotic arm 14000 can be constrained and/or limited to permit the passive repositioning by the clinician. - Referring now to
FIG. 25 , agraphical display 14050 of force over time of the robotic arm 14000 (FIG. 24 ) in a passive power assist mode is depicted. In the passive power assist mode, a clinician can apply a manual force to therobotic arm 14000 to initiate the repositioning of therobotic arm 14000. The clinician can be within the sterile field. In certain instances, the passive power assist mode can be activated when therobotic arm 14000 senses a manual manipulation. - As depicted in
FIG. 25 , the manual force exerted by a clinician can increase to exceed a predefined threshold, such as the 15-lb limit indicated inFIG. 25 , for example, to affect repositioning of therobotic arm 14000. In certain instances, the predefined threshold can correspond to the maximum force an able-bodied assist can easily exert on therobotic arm 14000 without undue stress or strain. In other instances, the predefined threshold can correspond to a minimum threshold force on therobotic arm 14000 in order to avoid providing a powered assist to unintentional or inadvertent contacts with therobotic arm 14000. - When the user exerts a force on the
robotic arm 14000 above the predefined threshold, one or more motors (e.g. motors 14407 inFIG. 23 ) of the robotic surgical system can apply an assisting force to therobotic arm 14000 to help reposition therobotic arm 14000 in the direction indicated by the operator's force on therobotic arm 14000. In such instances, the operator can easily manipulate the position of the arm to avoid inadvertent collisions and/or entanglements and, when the operator's force exceeds a comfortable threshold force, the motors can assist or cooperate in the repositioning of the arm. The passive power assist provided by the motors of the robotic surgical system can compensate for the weight of therobotic arm 14000. In other instances, the assisting force can be less than the weight of therobotic arm 14000. In certain instances, the assisting force can be capped at a maximum force, such as the 5-lb limit indicated inFIG. 25 , for example. Capping the assisting force may ensure that therobotic arm 14000 does not forcefully collide with a person, surgical equipment, and/or another robotic arm in the surgical theater. - In one aspect, the passive power assist mode can be deactivated or locked out during portions of a surgical procedure. For example, when a surgical tool is positioned at the surgical site or within a predefined radius of the surgical site and/or the target tissue, the passive power assist mode can be locked out. Additionally or alternatively, during certain steps of a surgical procedure the passive power assist mode can be locked out. Situational awareness can be configured to determine whether the passive power assist mode should be locked out. For example, based on information that a hub knows regarding the step of the surgical procedure (see, e.g.
FIG. 33 ), a passive power assist mode may be ill-advised by the situational awareness module. Similarly, the passive power assist mode can be activated during certain portions of the surgical timeline shown inFIG. 33 . - In one aspect, the control unit for operating a robotic arm includes a processor and a memory communicatively coupled to the processor, as described herein. The memory stores instructions executable by the processor to operate in a passive power assist mode in which the processor is configured to process a manual force applied to the robotic arm and, if the manual force exceeds a predefined threshold, to direct one or more motors of the robotic arm to provide an assisting force to reposition the robotic arm in the direction indicated by the manual force.
- In various aspects, the present disclosure provides a control circuit configured to operate a passive power assist mode, as described above. In various aspects, the present disclosure provides a non-transitory computer readable medium storing computer readable instructions which, when executed, cause a machine to operate a passive power assist mode, as described above.
- Referring now to
FIGS. 26 and 27 , a clinician within the sterile field is utilizing alocal control module 14160 within a sterile field to affect repositioning of arobotic arm 14100. Therobotic arm 14100 is similar in many respects to therobotic arm 14400 inFIG. 23 . For example, therobotic arm 14100 includes a plurality ofmovable components 14102. Themovable components 14102 are rigid limbs that are mechanically coupled in series atrevolute joints 14103. Themoveable components 14102 form therobotic arm 14100, similar to the robotic arm 14400 (FIG. 23 ), for example. Adistal-most component 14102 c includes anattachment 14105 for releasably attaching interchangeable surgical tools, such as thesurgical tool 14106, for example. Eachcomponent 14102 of therobotic arm 14100 has one or more motors and motor drivers, which can be operated to affect rotational motion at therespective joint 14103. - Each
component 14102 includes one or more sensors, which can be position sensors and/or torque sensors, for example, and can provide information regarding the current configuration and/or load at the respective joint between thecomponents 14102. The motors can be controlled by a control unit, such as the control unit 14409 (FIG. 23 ), which is configured to receive inputs from the sensors and/or from a surgical command interface, such as the surgical command interface 14412 (FIG. 23 ), for example. - The
local control module 14160 includes aninteractive display 14164 and atouch screen 14166 that is configured to accept inputs, such as inputs from a finger and/or astylus 14168, for example. Thelocal control module 14160 is a handheld, mobile digital electronic device. For example, thelocal control module 14160 can be an iPad® tablet or other mobile tablet or smart phone, for example. In use, the clinician provides repositioning instructions to therobotic arm 14100 via thedisplay 14164 and/or thetouch screen 14166 of thelocal control module 14160. Thelocal control module 14160 is awireless communication module 14162 such that the inputs from the clinician can be communicated to therobotic arm 14100 to affect arm control motions. The local control module 14140 can wirelessly communicate with the robotic arm 14140 and/or a control unit (e.g. thecontrol unit 14409 inFIG. 23 ) of the robotic system via a Wi-Fi connection, for example. - The
robotic arm 14100 includes six degrees of freedom indicated by the six arrows inFIG. 26 . The proximal degrees of freedom can be controlled by thelocal control module 14160 and the distal degrees of freedom can be controlled by the remote control module. In one instance, the three most-proximal degrees of freedom (articulation about the two most-proximal joints 14103 and rotation of theintermediate limb 14102 about the axis thereof) can be controlled by the local control module and the three most-distal degrees of freedom (articulation about the most-distal joint 14103, rotation of the most-distal limb 14102 c about the axis thereof, and displacement of thesurgical tool 14106 along the axis thereof) can be controlled by the remote control module. In such instances, the clinician within the sterile field can affect gross robotic arm control motions, such as control motions of the proximal arms and/or joints. For example, the clinician within the sterile field can quickly and easily move a robotic arm to a general position, such as a pre-operative position, tool exchanging position, and/or reloading position via thelocal control module 14160. In such instances, thelocal control module 14160 is a secondary control system for therobotic arm 14100. The surgeon outside the sterile field can affect more localized or finessed robotic arm control motions via inputs at the surgeon's command interface 14412 (FIG. 23 ). In such instances, the surgeon'scommand interface 14412 outside the sterile field is the primary control system. - The reader will readily appreciate that fewer or greater than six degrees of freedom are contemplated. Alternative degrees of freedom are also contemplated. Moreover, different degrees of freedom can be assigned to the
local control module 14160 and/or the remote control module. In certain instances, one or more degrees of freedom can be assigned to both thelocal control module 14106 and the remote control module. - Referring primarily now to
FIG. 27 , agraphical display 14150 of force over time of therobotic arm 14100 is depicted. Fromtime 0 to time t1, locally-actuated, in-field forces are applied to therobotic arm 14100 by a clinician within the sterile field to adjust the general position of therobotic arm 14100. In certain instances, the force attributable to inputs from thelocal control module 14160 can be capped at a first maximum force (for example the 50-lb limit indicated inFIG. 27 ). By utilizing thelocal control module 14160, the clinician within the sterile field can quickly reposition therobotic arm 14100 to exchange and/or reload thesurgical tool 14160, for example.Time 0 to time ti can correspond to a local actuation mode. Active setup or reloading time in a surgical procedure can occur during the local actuation mode. For example, during the local actuation mode, therobotic arm 14100 can be out of contact with patient tissue and/or outside a predefined boundary around the surgical site, for example. - Thereafter, the surgeon at the surgeon's command console can further actuate the
robotic arm 14100. For example, from time t2 to time t3, the remotely-actuated forces are attributable to inputs from the surgeon's command console. The remotely-actuated forces can be capped at a second maximum force (for example the 5-lb limit indicated inFIG. 27 ), which is less than the first maximum force. By limiting the second maximum force, a surgeon is less likely to cause a high-force or high-speed collision within the sterile field while the larger first maximum force allows therobotic arm 14100 to be quickly repositioned in certain instances. Time t2 to time t3 can correspond to a remote actuation mode during a surgical procedure, which can include when therobotic tool 14106 is actively manipulating tissue (grasping, pulling, holding, transecting, sealing, etc.) and/or when therobotic arm 14100 and/orsurgical tool 14106 thereof is within the predefined boundary around the surgical site. - In one aspect, the local actuation mode and/or the remote actuation mode can be deactivated or locked out during portions of a surgical procedure. For example, the local actuation mode can be locked out when the surgical tool is engaged with tissue or otherwise positioned at the surgical site. Situational awareness can be configured to determine whether the local actuation mode should be locked out. For example, based on information that a hub knows regarding the step of the surgical procedure (see, e.g.
FIG. 33 ), a local actuation mode may be ill-advised by the situational awareness module. Similarly, the remote actuation mode may be ill-advised during other portions of the surgical procedure. - In one aspect, the control unit for operating a robotic arm includes a processor and a memory communicatively coupled to the processor, as described herein. The memory stores instructions executable by the processor to provide control motions to the robotic arm based on input from a local control module during portion(s) of a surgical procedure and to provide control motions to the robotic arm based on input from a remote control module during portion(s) of the surgical procedure. A first maximum force can limit the control motions from the local control module and a second maximum force can limit the control motions from the remote control module.
- In various aspects, the present disclosure provides a control circuit configured to operate a robotic arm via a local control module and a remote control module, as described above. In various aspects, the present disclosure provides a non-transitory computer readable medium storing computer readable instructions which, when executed, cause a machine to operate a robotic arm via a local control module and a remote control module, as described above.
- The entire disclosures of:
-
- U.S. Pat. No. 9,072,535, filed May 27, 2011, titled SURGICAL STAPLING INSTRUMENTS WITH ROTATABLE STAPLE DEPLOYMENT ARRANGEMENTS, which issued Jul. 7, 2015;
- U.S. Pat. No. 9,072,536, filed Jun. 28, 2012, titled DIFFERENTIAL LOCKING ARRANGEMENTS FOR ROTARY POWERED SURGICAL INSTRUMENTS, which issued Jul. 7, 2015;
- U.S. Pat. No. 9,204,879, filed Jun. 28, 2012, titled FLEXIBLE DRIVE MEMBER, which issued on Dec. 8, 2015;
- U.S. Pat. No. 9,561,038, filed Jun. 28, 2012, titled INTERCHANGEABLE CLIP APPLIER, which issued on Feb. 7, 2017;
- U.S. Pat. No. 9,757,128, filed Sep. 5, 2014, titled MULTIPLE SENSORS WITH ONE SENSOR AFFECTING A SECOND SENSOR'S OUTPUT OR INTERPRETATION, which issued on Sep. 12, 2017;
- U.S. patent application Ser. No. 14/640,935, titled OVERLAID MULTI SENSOR RADIO FREQUENCY (RF) ELECTRODE SYSTEM TO MEASURE TISSUE COMPRESSION, filed Mar. 6, 2015, now U.S. Patent Application Publication No. 2016/0256071, which published on Sep. 8, 2016;
- U.S. patent application Ser. No. 15/382,238, titled MODULAR BATTERY POWERED HANDHELD SURGICAL INSTRUMENT WITH SELECTIVE APPLICATION OF ENERGY BASED ON TISSUE CHARACTERIZATION, filed Dec. 16, 2016, now U.S. Patent Application Publication No. 2017/0202591, which published on Jul. 20, 2017; and
- U.S. patent application Ser. No. 15/237,753, titled CONTROL OF ADVANCEMENT RATE AND APPLICATION FORCE BASED ON MEASURED FORCES, filed Aug. 16, 2016, now U.S. Patent Application Publication No. 2018/0049822, which published on Feb. 22, 2018;
are herein incorporated by reference in their respective entireties.
- Various aspects of the subject matter described herein are set out in the following numbered examples.
- A surgical system, comprising: a robotic system, comprising: a control unit; a robotic arm comprising an attachment portion; and a first sensor system in signal communication with said control unit, wherein said first sensor system is configured to detect a position of said attachment portion. The surgical system further comprises a surgical tool removably attached to said attachment portion. The surgical system further comprises a second sensor system configured to detect a position of said surgical tool, wherein said secondary sensor system is independent of said first sensor system.
- The surgical system of Example 1, wherein said second sensor system comprises: a magnetic field emitter and a magnetic field sensor incorporated into said surgical tool.
- The surgical system of any one of Examples 1 and 2, further comprising a handheld, battery-powered surgical instrument comprising an instrument sensor, wherein said second sensor system is configured to detect a position of said instrument sensor.
- The surgical system of Example 3, further comprising a real-time display configured to display the position of said surgical tool and the position of said instrument sensor based on data from said second sensor system.
- The surgical system of any one of Examples 3 and 4, wherein said handheld, battery-powered surgical instrument comprises an autonomous control unit.
- The surgical system of any one of Examples 1-5, further comprising a trocar comprising a trocar sensor, wherein said second sensor system is configured to detect a position of said trocar sensor.
- The surgical system of Example 6, further comprising a real-time display configured to display the position of said surgical tool and the position of said trocar based on data from said second sensor system.
- The surgical system of any one of Examples 1-7, further comprising a plurality of patient sensors applied to a patient, wherein said second sensor system is configured to detect the position of said patient sensors.
- The surgical system of Example 8, further comprising a real-time display configured to display the position of said surgical tool and the position of said patient sensors based on data from said second sensor system.
- A surgical system, comprising: a robotic system, comprising: a control unit; a robotic arm comprising a first portion, a second portion, and a joint intermediate said first portion and said second portion; a first sensor system configured to detect a position of said first portion and said second portion of said robotic arm; and a redundant sensor system configured to detect a position of said first portion and said second portion of said robotic arm.
- The surgical system of Example 10, wherein said robotic arm comprises a motor, and wherein said first sensor system comprises a torque sensor on said motor.
- The surgical system of Examples 10 and 11, wherein said redundant sensor system comprises a magnetic field emitter and a plurality of magnetic sensors positioned on said robotic arm.
- The surgical system of any one of Examples 10-12, wherein said control unit comprises a processor and a memory communicatively coupled to the processor, wherein said memory stores instructions executable by said processor to compare the position detected by said first sensor system to the position detected by said redundant sensor system to optimize control motions of said robotic arm.
- The surgical system of any one of Examples 10-13, further comprising a control circuit configured to compare the position detected by said first sensor system to the position detected by said redundant sensor system to optimize control motions of said robotic arm.
- A surgical system, comprising: a surgical robot, comprising: a control unit; and a robotic arm comprising a motor. The surgical system further comprises a surgical tool removably attached to said robotic arm. The surgical system further comprises a first sensor system in signal communication with said control unit, wherein said first sensor system comprises a torque sensor on said motor, and wherein said first sensor system is configured to detect a position of said surgical tool. The surgical system further comprises a second sensor system configured to independently detect a position of said surgical tool.
- The surgical system of Example 15, wherein said second sensor system comprises: a magnetic field emitter and a magnetic field sensor incorporated into said surgical tool.
- The surgical system of any one of Examples 15 and 16, further comprising a handheld, battery-powered surgical instrument comprising an instrument sensor, wherein said second sensor system is configured to detect a position of said instrument sensor.
- The surgical system of any one of Examples 15-17, further comprising a trocar comprising a trocar sensor, wherein said second sensor system is configured to detect a position of said trocar sensor.
- The surgical system of any one of Examples 15-18, further comprising a plurality of patient sensors applied to patient tissue, wherein said second sensor system is configured to detect the position of said patient sensors.
- The surgical system of any one of Examples 15-19, further comprising a real-time display configured to display one or more positions of said surgical tool based on data from said first sensor system and said second sensor system.
- The surgical system of any one of Examples 15-20, further comprising a hub comprising a situational awareness system, wherein said first sensor system and said second sensor system comprise data sources for said situational awareness system.
- While several forms have been illustrated and described, it is not the intention of the applicant to restrict or limit the scope of the appended claims to such detail. Numerous modifications, variations, changes, substitutions, combinations, and equivalents to those forms may be implemented and will occur to those skilled in the art without departing from the scope of the present disclosure. Moreover, the structure of each element associated with the described forms can be alternatively described as a means for providing the function performed by the element. Also, where materials are disclosed for certain components, other materials may be used. It is therefore to be understood that the foregoing description and the appended claims are intended to cover all such modifications, combinations, and variations as falling within the scope of the disclosed forms. The appended claims are intended to cover all such modifications, variations, changes, substitutions, modifications, and equivalents.
- The foregoing detailed description has set forth various forms of the devices and/or processes via the use of block diagrams, flowcharts, and/or examples. Insofar as such block diagrams, flowcharts, and/or examples contain one or more functions and/or operations, it will be understood by those within the art that each function and/or operation within such block diagrams, flowcharts, and/or examples can be implemented, individually and/or collectively, by a wide range of hardware, software, firmware, or virtually any combination thereof. Those skilled in the art will recognize that some aspects of the forms disclosed herein, in whole or in part, can be equivalently implemented in integrated circuits, as one or more computer programs running on one or more computers (e.g., as one or more programs running on one or more computer systems), as one or more programs running on one or more processors (e.g., as one or more programs running on one or more microprocessors), as firmware, or as virtually any combination thereof, and that designing the circuitry and/or writing the code for the software and or firmware would be well within the skill of one of skill in the art in light of this disclosure. In addition, those skilled in the art will appreciate that the mechanisms of the subject matter described herein are capable of being distributed as one or more program products in a variety of forms, and that an illustrative form of the subject matter described herein applies regardless of the particular type of signal bearing medium used to actually carry out the distribution.
- Instructions used to program logic to perform various disclosed aspects can be stored within a memory in the system, such as dynamic random access memory (DRAM), cache, flash memory, or other storage. Furthermore, the instructions can be distributed via a network or by way of other computer readable media. Thus a machine-readable medium may include any mechanism for storing or transmitting information in a form readable by a machine (e.g., a computer), but is not limited to, floppy diskettes, optical disks, compact disc, read-only memory (CD-ROMs), and magneto-optical disks, read-only memory (ROMs), random access memory (RAM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic or optical cards, flash memory, or a tangible, machine-readable storage used in the transmission of information over the Internet via electrical, optical, acoustical or other forms of propagated signals (e.g., carrier waves, infrared signals, digital signals, etc.). Accordingly, the non-transitory computer-readable medium includes any type of tangible machine-readable medium suitable for storing or transmitting electronic instructions or information in a form readable by a machine (e.g., a computer).
- As used in any aspect herein, the term “control circuit” may refer to, for example, hardwired circuitry, programmable circuitry (e.g., a computer processor comprising one or more individual instruction processing cores, processing unit, processor, microcontroller, microcontroller unit, controller, digital signal processor (DSP), programmable logic device (PLD), programmable logic array (PLA), or field programmable gate array (FPGA)), state machine circuitry, firmware that stores instructions executed by programmable circuitry, and any combination thereof. The control circuit may, collectively or individually, be embodied as circuitry that forms part of a larger system, for example, an integrated circuit (IC), an application-specific integrated circuit (ASIC), a system on-chip (SoC), desktop computers, laptop computers, tablet computers, servers, smart phones, etc. Accordingly, as used herein “control circuit” includes, but is not limited to, electrical circuitry having at least one discrete electrical circuit, electrical circuitry having at least one integrated circuit, electrical circuitry having at least one application specific integrated circuit, electrical circuitry forming a general purpose computing device configured by a computer program (e.g., a general purpose computer configured by a computer program which at least partially carries out processes and/or devices described herein, or a microprocessor configured by a computer program which at least partially carries out processes and/or devices described herein), electrical circuitry forming a memory device (e.g., forms of random access memory), and/or electrical circuitry forming a communications device (e.g., a modem, communications switch, or optical-electrical equipment). Those having skill in the art will recognize that the subject matter described herein may be implemented in an analog or digital fashion or some combination thereof.
- As used in any aspect herein, the term “logic” may refer to an app, software, firmware and/or circuitry configured to perform any of the aforementioned operations. Software may be embodied as a software package, code, instructions, instruction sets and/or data recorded on non-transitory computer readable storage medium. Firmware may be embodied as code, instructions or instruction sets and/or data that are hard-coded (e.g., nonvolatile) in memory devices.
- As used in any aspect herein, the terms “component,” “system,” “module” and the like can refer to a computer-related entity, either hardware, a combination of hardware and software, software, or software in execution.
- As used in any aspect herein, an “algorithm” refers to a self-consistent sequence of steps leading to a desired result, where a “step” refers to a manipulation of physical quantities and/or logic states which may, though need not necessarily, take the form of electrical or magnetic signals capable of being stored, transferred, combined, compared, and otherwise manipulated. It is common usage to refer to these signals as bits, values, elements, symbols, characters, terms, numbers, or the like. These and similar terms may be associated with the appropriate physical quantities and are merely convenient labels applied to these quantities and/or states.
- A network may include a packet switched network. The communication devices may be capable of communicating with each other using a selected packet switched network communications protocol. One example communications protocol may include an Ethernet communications protocol which may be capable permitting communication using a Transmission Control Protocol/Internet Protocol (TCP/IP). The Ethernet protocol may comply or be compatible with the Ethernet standard published by the Institute of Electrical and Electronics Engineers (IEEE) titled “IEEE 802.3 Standard”, published in December, 2008 and/or later versions of this standard. Alternatively or additionally, the communication devices may be capable of communicating with each other using an X.25 communications protocol. The X.25 communications protocol may comply or be compatible with a standard promulgated by the International Telecommunication Union-Telecommunication Standardization Sector (ITU-T). Alternatively or additionally, the communication devices may be capable of communicating with each other using a frame relay communications protocol. The frame relay communications protocol may comply or be compatible with a standard promulgated by Consultative Committee for International Telegraph and Telephone (CCITT) and/or the American National Standards Institute (ANSI). Alternatively or additionally, the transceivers may be capable of communicating with each other using an Asynchronous Transfer Mode (ATM) communications protocol. The ATM communications protocol may comply or be compatible with an ATM standard published by the ATM Forum titled “ATM-MPLS Network Interworking 2.0” published August 2001, and/or later versions of this standard. Of course, different and/or after-developed connection-oriented network communication protocols are equally contemplated herein.
- Unless specifically stated otherwise as apparent from the foregoing disclosure, it is appreciated that, throughout the foregoing disclosure, discussions using terms such as “processing,” “computing,” “calculating,” “determining,” “displaying,” or the like, refer to the action and processes of a computer system, or similar electronic computing device, that manipulates and transforms data represented as physical (electronic) quantities within the computer system's registers and memories into other data similarly represented as physical quantities within the computer system memories or registers or other such information storage, transmission or display devices.
- One or more components may be referred to herein as “configured to,” “configurable to,” “operable/operative to,” “adapted/adaptable,” “able to,” “conformable/conformed to,” etc. Those skilled in the art will recognize that “configured to” can generally encompass active-state components and/or inactive-state components and/or standby-state components, unless context requires otherwise.
- The terms “proximal” and “distal” are used herein with reference to a clinician manipulating the handle portion of the surgical instrument. The term “proximal” refers to the portion closest to the clinician and the term “distal” refers to the portion located away from the clinician. It will be further appreciated that, for convenience and clarity, spatial terms such as “vertical”, “horizontal”, “up”, and “down” may be used herein with respect to the drawings. However, surgical instruments are used in many orientations and positions, and these terms are not intended to be limiting and/or absolute.
- Those skilled in the art will recognize that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to claims containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations.
- In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that typically a disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms unless context dictates otherwise. For example, the phrase “A or B” will be typically understood to include the possibilities of “A” or “B” or “A and B.”
- With respect to the appended claims, those skilled in the art will appreciate that recited operations therein may generally be performed in any order. Also, although various operational flow diagrams are presented in a sequence(s), it should be understood that the various operations may be performed in other orders than those which are illustrated, or may be performed concurrently. Examples of such alternate orderings may include overlapping, interleaved, interrupted, reordered, incremental, preparatory, supplemental, simultaneous, reverse, or other variant orderings, unless context dictates otherwise. Furthermore, terms like “responsive to,” “related to,” or other past-tense adjectives are generally not intended to exclude such variants, unless context dictates otherwise.
- It is worthy to note that any reference to “one aspect,” “an aspect,” “an exemplification,” “one exemplification,” and the like means that a particular feature, structure, or characteristic described in connection with the aspect is included in at least one aspect. Thus, appearances of the phrases “in one aspect,” “in an aspect,” “in an exemplification,” and “in one exemplification” in various places throughout the specification are not necessarily all referring to the same aspect. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more aspects.
- Any patent application, patent, non-patent publication, or other disclosure material referred to in this specification and/or listed in any Application Data Sheet is incorporated by reference herein, to the extent that the incorporated materials is not inconsistent herewith. As such, and to the extent necessary, the disclosure as explicitly set forth herein supersedes any conflicting material incorporated herein by reference. Any material, or portion thereof, that is said to be incorporated by reference herein, but which conflicts with existing definitions, statements, or other disclosure material set forth herein will only be incorporated to the extent that no conflict arises between that incorporated material and the existing disclosure material.
- In summary, numerous benefits have been described which result from employing the concepts described herein. The foregoing description of the one or more forms has been presented for purposes of illustration and description. It is not intended to be exhaustive or limiting to the precise form disclosed. Modifications or variations are possible in light of the above teachings. The one or more forms were chosen and described in order to illustrate principles and practical application to thereby enable one of ordinary skill in the art to utilize the various forms and with various modifications as are suited to the particular use contemplated. It is intended that the claims submitted herewith define the overall scope.
Claims (21)
1-21. (canceled)
22. A surgical system, comprising:
a robotic system, comprising:
a control unit;
a robotic arm comprising an attachment portion;
a first sensor system in signal communication with the control unit, wherein the first sensor system is configured to detect a position of the attachment portion; and
a surgical tool releasably attachable to the attachment portion, wherein the surgical tool comprises motor-driven actuation system; and
a second sensor system comprising a tool sensor incorporated into the surgical tool.
23. The surgical system of claim 22 , wherein the control unit is configured to automatically actuate a surgical function of the surgical tool based on position data from the second sensor system.
24. The surgical system of claim 23 , wherein the position data from the second sensor system comprises a position of the surgical tool relative to a margin zone around a tumor, and wherein the control unit is configured to automatically actuate the surgical function when the surgical tool moves into the margin zone.
25. The surgical system of claim 22 , wherein the robotic system comprises a motor, wherein the first sensor system comprises a torque sensor on the motor, and wherein the tool sensor comprises a time-of-flight reflector.
26. The surgical system of claim 22 , wherein the first sensor system and the second sensor system are configured to operate independently and simultaneously.
27. The surgical system of claim 22 , wherein the surgical tool further comprises a wireless communication module in signal communication with the tool sensor and the control unit.
28. A surgical system, comprising:
a robotic system, comprising:
a control unit;
a robotic arm comprising an attachment portion;
a first sensor system in signal communication with the control unit, wherein the first sensor system is configured to detect a position of the attachment portion; and
a surgical tool releasably attachable to the attachment portion, wherein the surgical tool comprises a wireless communication module; and
a second sensor system comprising a tool sensor incorporated into the surgical tool, wherein the wireless communication module is in signal communication with the tool sensor and the control unit.
29. The surgical system of claim 28 , wherein the wireless communication module is configured to transmit position data from the second sensor system to the control unit, and wherein the control unit is configured to automatically actuate a surgical function of the surgical tool based on the position data from the second sensor system.
30. The surgical system of claim 29 , wherein the position data from the second sensor system comprises a position of the surgical tool relative to a margin zone around a tumor, and wherein the control unit is configured to automatically actuate the surgical function when the surgical tool moves into the margin zone.
31. The surgical system of claim 29 , wherein the surgical tool comprises a surgical stapler, and wherein the surgical function is selected from a group consisting of clamping the surgical stapler and firing the surgical stapler.
32. The surgical system of claim 29 , wherein the surgical tool comprises an energy tool, and wherein the surgical function comprises energizing the energy tool.
33. The surgical system of claim 28 , wherein the robotic system comprises a motor, and wherein the first sensor system comprises a torque sensor on the motor.
34. The surgical system of claim 28 , wherein the first sensor system and the second sensor system are configured to operate independently and simultaneously.
35. A surgical system, comprising:
a surgical robot, comprising:
a control unit; and
a robotic arm comprising a motor;
a surgical tool releasably attachable to the robotic arm;
a first sensor system in signal communication with the control unit, wherein the first sensor system comprises a torque sensor on the motor; and
a second sensor system comprising a tool sensor incorporated into the surgical tool, wherein the first sensor system and the second sensor system are configured to independently and simultaneously detect a position of the surgical tool.
36. The surgical system of claim 35 , wherein the tool sensor comprises a time-of-flight reflector.
37. The surgical system of claim 35 , wherein the second sensor system is configured to determine a position of the surgical tool relative to a margin zone around a tumor based on the detected position of the tool sensor incorporated into the surgical tool.
38. The surgical system of claim 37 , wherein the margin zone comprises an outer boundary and an inner boundary, and wherein the inner boundary defines a boundary of the tumor.
39. The surgical system of claim 38 , wherein the control unit is configured to automatically actuate a surgical function of the surgical tool when the surgical tool moves between the outer boundary and the inner boundary.
40. The surgical system of claim 39 , wherein the surgical tool comprises a surgical stapler, and wherein the surgical function is selected from a group consisting of clamping the surgical stapler and firing the surgical stapler.
41. The surgical system of claim 39 , wherein the surgical tool comprises an energy tool, and wherein the surgical function comprises energizing the energy tool.
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US17/871,453 Pending US20220409302A1 (en) | 2017-12-28 | 2022-07-22 | Sensing arrangements for robot-assisted surgical platforms |
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US15/940,711 Active 2040-11-26 US11432885B2 (en) | 2017-12-28 | 2018-03-29 | Sensing arrangements for robot-assisted surgical platforms |
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2022
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Also Published As
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US20190201120A1 (en) | 2019-07-04 |
JP7225247B2 (en) | 2023-02-20 |
JP2021509037A (en) | 2021-03-18 |
CN111566749A (en) | 2020-08-21 |
WO2019130092A1 (en) | 2019-07-04 |
US11432885B2 (en) | 2022-09-06 |
EP3635739A1 (en) | 2020-04-15 |
BR112020012672A2 (en) | 2020-12-01 |
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