WO2022179170A1

WO2022179170A1 - Surgical power system

Info

Publication number: WO2022179170A1
Application number: PCT/CN2021/128727
Authority: WO
Inventors: 何成东; 石鸿恺; 周明
Original assignee: 江苏邦士医疗科技有限公司
Priority date: 2021-02-23
Filing date: 2021-11-04
Publication date: 2022-09-01
Also published as: CN112716539A

Abstract

A surgical power system, comprising a host (101), mobile phones (103, 104, 105) and a foot switch (102), wherein in the host (101), an AC/DC module (201) generates a specific direct-current drive voltage, which passes through a voltage adjuster; the voltage adjuster recognizes the mobile phones (103, 104, 105) used and cutters (106, 107, 108, 109, 110), and adjusts the voltage, the adjusted voltage serving as a bus voltage for driving a three-phase bridge module; then, a control DSP (210) generates, according to signals fed back by position feedback modules (207, 208), three channels of drive signals that differ by 120º, and six channels of complementary drive signals are produced by means of amplification via the control DSP (210), so as to drive a switch transistor of the three-phase bridge module; and thus, three channels of drive signals that differ by 120º are generated, such that drive motors in the mobile phones (103, 104, 105) operate, so as to finally drive transmission bearings to drive the cutters (106, 107, 108, 109, 110) to work. The present surgical power system serves as a comprehensive power system which can be used for the cutting, excision, grinding and drilling of soft and hard tissue, bones and biological materials in orthopedic neurosurgery, arthroscopy, spine, sternum and general surgical operations, thereby achieving the aims of multi-department or all-department application and accurate treatment.

Description

A surgical power system

technical field

The invention belongs to the field of medical instruments, in particular to a surgical power system.

Background technique

The surgical power system consists of a host, a foot switch, a mobile phone, and a disposable sterile knife head. The host provides power to drive the motor in the mobile phone to rotate, thereby driving the cutter head to rotate, so as to realize the planing, grinding and drilling of human bone tissue or soft tissue in surgical operations. During the operation, the system needs to adjust the rotational speed, switch the working mode, and adjust the flow rate, all of which are controlled by the system host.

With the continuous development of the field of medical devices, the application of surgical power systems in medical devices has become more and more extensive. Due to the continuous pursuit of small and light weight medical and surgical instruments, reducing surgical fatigue and achieving the development direction of precise treatment, there are mobile phones with different characteristics suitable for different departments. However, due to the contradictory relationship between the size and performance of the drive motor, there is still no motor that can be applied to all departments, and systems with different models and different output characteristics are configured around the application of a single department; For the medical institutions with high cost, the input-output ratio is unacceptable. In the complex surgical process, the use of different surgical equipment alternately leads to low surgical efficiency; therefore, only one device can meet the application of the whole department, which is suitable for complex surgical procedures. Surgical use will be the best choice, which will significantly reduce the cost of medical institutions and reduce the risk of surgical cross-infection.

SUMMARY OF THE INVENTION

In order to solve the above problems existing in the prior art, the present invention provides a surgical power system.

The technical scheme provided by the present invention is as follows:

A surgical power system, including a host, a mobile phone and a foot switch;

The host includes AC/DC module, voltage regulator, three-phase bridge module, control DSP and HMI interface, mobile tool recognition module, position feedback module and flushing pump;

The mobile phone includes a drive motor, a transmission bearing, and a handle; the front end of the mobile phone is equipped with a surgical tool;

The foot switch controls the operation of the host;

In the host, the specific DC driving voltage generated by the AC/DC module is input to the voltage regulator. The voltage regulator adjusts the driving voltage by controlling the mobile phone and tool type fed back by the DSP depending on the mobile phone tool identification module, and the adjusted voltage is used as the driving force. The bus input voltage of the three-phase bridge module, and then, control the DSP to generate three driving signals with a difference of 120° according to the feedback signal of the position feedback module, and then control the DSP to amplify and produce six complementary driving signals to drive the switch of the three-phase bridge module. tube, and then generate three driving voltage sources with a difference of 120°, so that the driving motor in the mobile phone runs, and finally drives the transmission bearing to drive the work of the tool.

Further, the AC/DC module is an AC/DC power supply module or a circuit board, and the output DC driving voltage is 48V.

Further, the voltage regulator adopts a BUCK circuit.

Further, the position feedback module includes a sensor HALL processing circuit and/or a sensorless BEMF processing circuit, and the two position feedback modes are determined according to the motor specifications of the mobile phone used; specifically: a sensorless BEMF processing circuit, namely UVW three-phase After the voltage is collected, the two-by-two differential amplification is used to generate three-way BEMF signals, and the control DSP acquisition and AD conversion are used to finally judge the real-time position of the motor through the algorithm; Determine the real-time position of the motor running.

Further, the method of identifying the mobile phone tool is to identify the resistance wired method or use the RFID tag wireless identification method, and the label contains the characteristic information of the mobile phone and the tool.

Further, the mobile phone tool identification process is: start the standby state without mobile phone insertion; when the mobile phone is connected, the control DSP starts to identify the mobile phone type by collecting the information fed back by the mobile phone tool identification module, controls the DSP to query and set the parameters of the mobile phone, and enter the tool feature information Recognition, the tool recognition module of the mobile phone feeds back the feature information of the tool through RFID; when the control DSP is successfully identified, it controls the query library feature information and matches the operating parameters. The operating parameters include speed range, reciprocating frequency, rated torque, and default speed; parameters Update HMI data display after matching.

The advantages of the invention are: providing a set of systems to complete all applications, reducing development costs and maintenance costs; matching a variety of motors, with strong compatibility and high scalability; mobile phone and tool recognition, automatic configuration of application parameters, and intelligent matching Rated parameters reduce surgical risks and improve efficiency; it can be applied to small and sophisticated medical institutions to reduce configuration costs and achieve the purpose of precision medicine.

Description of drawings

FIG. 1 is a system block diagram of a surgical power system in an embodiment of the present invention.

FIG. 2 is a diagram of the internal connection relationship of the surgical power system in the embodiment of the present invention.

FIG. 3 is a circuit diagram of a bemf processing circuit for position feedback in an embodiment of the present invention.

FIG. 4 is a circuit diagram of a hall processing circuit of position feedback in an embodiment of the present invention.

FIG. 5 is a flowchart of mobile phone tool recognition in an embodiment of the present invention.

Detailed ways

The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings.

A surgical power system includes a host controller, a mobile phone, a knife, and a foot switch; the host controller generates a surgical power motor driving power supply suitable for different specifications, and different mobile phones include driving motors with different specifications, and handles and tools suitable for different applications The host controller generally includes, AC-DC circuit or module, three-phase bridge drive circuit, DSP control IC and HMI interface, or includes flushing pump, mobile phone generally includes drive motor, transmission bearing, handle and other components.

After the host is powered, the AC-DC module generates a specific DC motor driving voltage, and the voltage is adjusted by the voltage regulator, usually 12V-48V. The voltage is determined according to the identification of the mobile phone and the tool, and provides the bus voltage for driving the three-phase bridge circuit. , and then, the system IC generates 3 driving signals with a difference of 120° according to the position feedback signal (the feedback method is determined by the motor model); the driving IC amplifies and generates 6 complementary driving signals to drive the switch tubes of the three-phase bridge circuit; Generate 3-way motor drive power with a difference of 120°, forcing the motor to run, and the motor rotation drives the rotation or vibration of the bearing and the handle tool.

The AC-DC module is usually an AC-DC power supply module or circuit board; the output is usually DC 48V. The voltage regulator is usually a buck circuit, or other voltage regulator circuits. The feedback methods include HALL sensor feedback, encoder feedback and sensorless BEMF feedback methods. The method of the mobile phone tool identification is the wired method of identifying the resistance or the wireless identification method of the RFID tag; the label contains the characteristic information of the mobile phone and the tool.

This embodiment provides a surgical power system that can be used for cutting, grinding and re-boring of soft and hard tissues, bones, and biomaterials in orthopedic neurosurgery, arthroscopy, spine, sternum, and general surgery. The comprehensive power system can achieve the purpose of multi-department or whole-department application and precise treatment.

As shown in FIG. 1, this embodiment provides a surgical power system, including: a host 101, a foot switch 102, a mobile phone: mobile phones 1, 103,

mobile phones

2, 104, and so on,

mobile phones

3, 105...; Tools: grinding head tools 106, hole-turning tools 107, reciprocating saws 108, orthopaedic planing tools 109, soft tissue planing tools 110; the host 101 (host controller, HMI human-machine interface, flushing perfusion pump) is the driving force Occurrence and operation status monitoring device; mobile phone 1, 103 is usually a high-speed mobile phone, which is used for grinding, turning and sawing of bone tissue or biological materials;

mobile phone

2, 104 is a planing mobile phone, which can be used for cutting and resection of bone tissue and soft tissue; The mobile phone 105 is an expandable mobile phone, which can be a big bone-turning mobile phone, an ear-turning mobile phone, or the like.

As shown in FIG. 2 , in this embodiment, the internal connection relationship of the surgical power system is as follows: the AC/DC module 201 converts the AC input to DC+48-60V, 202; as the input of the BUCK module 203, the drive is generated by controlling the DSP 210 PWM, make DC+202 chopper filter to obtain DCIN+24V~48V, 204; then as the bus voltage of the three-phase bridge module, control the DSP to receive the feedback signal of the

position feedback module

207 or 208, and generate the three-phase bridge 205 PWM drive through closed-loop adjustment signal; and then generate UVW three-way driving voltages with a difference of 120°, so that the mobile phone and the cutter 206 operate according to the set parameters. The mobile phone identification module 209 includes wired and wireless identification modules; it can identify the mobile phone type and tool model; after valid identification, the HMI displays the corresponding mobile phone tool interface, and sets the corresponding parameter range and default value. The control DSP 210 generates a drive signal to control the operation of the flushing perfusion pump 211; the control DSP 210 interacts with the HMI through the communication bus.

As shown in Figure 3-4, in this embodiment, the specific circuit of the position feedback module bemf processing circuit 207 of the surgical power system is: after UVW three-phase voltage is collected, two-by-two differential amplification generates three-way bemf signals; control DSP 210 to collect and AD After the conversion, a specific algorithm is used to determine the real-time position of the motor operation; the position feedback module hall processing circuit 208 converts the motor hall sensor signal to the level, and then controls the DSP 210 to detect and determine the real-time position of the motor operation. The advantage of this invention is that two One of the two methods can be selected, or they can coexist, which improves the selection range of the motor, and the best method can also be selected to participate in real-time calculation, so as to achieve the purpose of precise control and higher efficiency.

As shown in FIG. 4 , the mobile phone tool identification process in this embodiment is to start 401 in a standby state without a mobile phone inserted; when the mobile phone is connected, the control DSP 210 starts the mobile phone identification category 402 by collecting the information fed back by the mobile phone tool identification module 209, If the identification is successful, control the DSP 210 to query and set the parameters of the mobile phone 403. If it cannot be identified, continue to identify until the mobile phone is correctly identified, and enter the tool feature information identification 404. The mobile phone tool identification module 209 feeds back the feature information of the tool through RFID; when the control DSP 210 When the identification is successful, control its query library feature information and match the operating parameters 405. The operating parameters can be speed range, reciprocation frequency, rated torque, default speed, etc.; the HMI data 406 is updated after the parameter matching is completed.

The above descriptions are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, but any equivalent modifications or changes made by those of ordinary skill in the art based on the contents disclosed in the present invention should be included in the within the scope of protection described in the claims.

Claims

A surgical power system, comprising a host, a mobile phone and a foot switch, is characterized in that:

The host includes AC/DC module, voltage regulator, three-phase bridge module, control DSP and HMI interface, mobile tool recognition module, position feedback module and flushing pump;

The mobile phone includes a drive motor, a transmission bearing, and a handle; the front end of the mobile phone is equipped with a surgical tool;

The foot switch controls the operation of the host;

In the host, the specific DC driving voltage generated by the AC/DC module is input to the voltage regulator. The voltage regulator adjusts the driving voltage by controlling the mobile phone and tool type fed back by the DSP depending on the mobile phone tool identification module, and the adjusted voltage is used as the driving force. The bus input voltage of the three-phase bridge module, and then, control the DSP to generate three driving signals with a difference of 120° according to the feedback signal of the position feedback module, and then control the DSP to amplify and produce six complementary driving signals to drive the switch of the three-phase bridge module. tube, and then generate three driving voltage sources with a difference of 120°, so that the driving motor in the mobile phone runs, and finally drives the transmission bearing to drive the work of the tool.
The surgical power system according to claim 1, wherein the AC/DC module is an AC/DC power supply module or a circuit board, and the output DC driving voltage is 48V.
The surgical power system according to claim 1, wherein the voltage regulator adopts a BUCK circuit.
The surgical power system according to claim 1, wherein the position feedback module includes a sensor HALL processing circuit and/or a sensorless BEMF processing circuit, and the two position feedback modes are determined according to the motor specifications of the mobile phone used. ;Specifically: sensorless BEMF processing circuit, that is, after UVW three-phase voltage acquisition, two-by-two differential amplification is used to generate three-way BEMF signals, and the control DSP acquisition and AD conversion are used to finally judge the real-time position of motor operation through algorithms; HALL sensor processing circuit, That is, after the signal level of the motor HALL sensor is converted, the real-time position of the motor is judged by controlling the DSP detection.
The surgical power system according to claim 1, wherein the mobile phone cutter is identified by a wired identification method or an RFID tag wireless identification method, and the label contains the characteristic information of the mobile phone and the cutter.
A surgical power system according to claim 1, characterized in that: the mobile phone tool identification process is: starting a standby state without a mobile phone inserted; when the mobile phone is connected, the control DSP starts to identify the mobile phone by collecting the information fed back by the mobile phone tool identification module. Type, control the DSP to query and set the parameters of the mobile phone, enter the tool feature information identification, and the mobile phone tool identification module feeds back the feature information of the tool through RFID; when the control DSP is successfully identified, it controls the query library feature information, and matches the operating parameters and operating parameters. Including speed range, reciprocating frequency, rated torque, default speed; update HMI data display after parameter matching.