US20150282734A1 - Medical device placement system and a method for its use - Google Patents

Medical device placement system and a method for its use Download PDF

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Publication number
US20150282734A1
US20150282734A1 US14/557,948 US201414557948A US2015282734A1 US 20150282734 A1 US20150282734 A1 US 20150282734A1 US 201414557948 A US201414557948 A US 201414557948A US 2015282734 A1 US2015282734 A1 US 2015282734A1
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United States
Prior art keywords
paddle
medical device
placement system
mobile device
recited
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/557,948
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English (en)
Inventor
Timothy Schweikert
Skender Daerti
Rose Rowan
Eric M. Harris
Michael Joyce
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Angiodynamics Va LLC
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Individual
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Filing date
Publication date
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Priority to US14/557,948 priority Critical patent/US20150282734A1/en
Priority to EP15777248.4A priority patent/EP3128906A4/en
Priority to MX2016013152A priority patent/MX2016013152A/es
Priority to BR112016023578A priority patent/BR112016023578A2/pt
Priority to CN201580030425.XA priority patent/CN107072570A/zh
Priority to PCT/US2015/024893 priority patent/WO2015157398A1/en
Priority to JP2017504605A priority patent/JP2017515623A/ja
Priority to CA2945306A priority patent/CA2945306A1/en
Publication of US20150282734A1 publication Critical patent/US20150282734A1/en
Assigned to MEDICAL COMPONENTS, INC. reassignment MEDICAL COMPONENTS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHWEIKERT, TIMOTHY, DAERTI, Skender, HARRIS, ERIC, JOYCE, MICHAEL, ROWAN, Rose
Assigned to ANGIODYNAMICS VA LLC reassignment ANGIODYNAMICS VA LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MEDICAL COMPONENTS, INC.
Priority to US16/800,313 priority patent/US11607150B2/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/06—Devices, other than using radiation, for detecting or locating foreign bodies ; Determining position of diagnostic devices within or on the body of the patient
    • A61B5/061—Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body
    • A61B5/062—Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body using magnetic field
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0004—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by the type of physiological signal transmitted
    • A61B5/0006—ECG or EEG signals
    • A61B5/0402—
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A61B5/282—Holders for multiple electrodes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A61B5/283—Invasive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient; User input means
    • A61B5/742—Details of notification to user or communication with user or patient; User input means using visual displays
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/24—Hygienic packaging for medical sensors; Maintaining apparatus for sensor hygiene
    • A61B2562/247—Hygienic covers, i.e. for covering the sensor or apparatus during use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0015—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system
    • A61B5/002—Monitoring the patient using a local or closed circuit, e.g. in a room or building
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/30—Input circuits therefor
    • A61B5/303—Patient cord assembly, e.g. cable harness

Definitions

  • the present inventive concept relates to a system and method to properly locate a medical device, such as a catheter, within a patient's body while maintaining a sterile environment.
  • a medical device such as a catheter
  • the present system and method uses wireless technology to transmit data relating to the location of the catheter's tip as well as to an electrocardiogram to a computing device such that information can be displayed and controlled on the computing device without contact with any device outside of the sterile environment.
  • SVC Superior Vena Cava
  • ECG Electrocardiography
  • the ECG output is a graph showing electrical currents within the heart.
  • the graph comprises significant peaks that occur during specific events within the heart. Of these significant peaks, the P-wave is used to determine the location of a medical device near the heart.
  • the P-wave is measured at the time when the main electrical vector of a heart contraction is directed from the sinoatrial node towards the atrioventricular node, spreading from the right atrium to the left atrium.
  • the P-wave represents atrial depolarization, which causes atrial contraction.
  • the first operation to be performed by this system is to determine the general location of the catheter tip near the heart using triangulation, location determination technology.
  • This technology includes a paddle comprising three coils, along with an additional sensor coil located on the tip of the catheter and attached to a guide wire within the catheter.
  • the software can energize two or more of the coils within the paddle, creating different magnetic fields that are picked up by the sensor coil at the end of the catheter.
  • triangulation analysis made by software algorithms based on the energized coils, the location of the catheter tip can be determined.
  • the location is then displayed onto a screen to show the user where the tip is in relation to the heart. Once the tip is in close proximity to the heart, the technology can be switched to the ECG determination such that the precise location can be determined.
  • the ECG of the patient is generated through the use of electrodes that are placed on the patient's chest across the heart, such that the electrical currents within the heart can be determined and displayed graphically.
  • the ECG graph comprises several peaks that can provide the medical practitioner with important information. For location purposes, the user focuses on the P-wave. As the tip of the catheter approaches the lower third of the SVC, the peak of the P-wave increases in height because the tip is getting closer to the Sinoatrial (SA) node and receiving a stronger signal. The catheter tip is in the correct location in the lower third of the SVC when the P-wave height is at a maximum. Therefore, the process requires that the tip is inserted past the peak, or optimal position.
  • SA Sinoatrial
  • the P-wave is reflected and a negative peak is seen on the graph because the tip has passed the SA node.
  • the user knows that the tip has passed the optimal point and can pull the tip back until the reflected wave disappears, which correspondingly indicates that the P-wave is at maximum and the tip of the catheter is located in the lower third of the SVC.
  • An issue with the current method of determining device location inside the body is the need to control the technology.
  • the electrodes used during the ECG method and the paddle used for the triangulation method must be connected to a computer.
  • the stylet, a portion of the catheter that is controlled and located with this system must also be connected to the computer.
  • a remote control is located on the cable connecting the stylet to the computer, which allows the user to control the information displayed on the screen as well as which technology is being used at the time.
  • the use of the remote by the person inserting the catheter is a great concern, as the inserter's hands must remain sterile.
  • the remote is not sterile, so the current method of maintaining a sterile environment involves applying an autoclaved plastic wrap over the remote so that the user's hands only contact the sterile environment.
  • What is needed is a system and method of determining the location of a medical device within a person's body that eliminates the need for the user to contact any element that is not in the sterile environment.
  • Such as system should be easy to prepare and comprise an interface that is well-known and easy to use.
  • An aspect of the present device is to provide a system and a method of determining the location of a medical device within a person's body, which eliminates, or reduces the need for the user to contact any element that is not in the sterile environment.
  • the system is easy to prepare and comprises an interface that is well-known and easy to use.
  • FIG. 1 is a view of the prior art medical device placement system and its location on the body when being used to determine the location of a catheter tip near the heart.
  • FIG. 2 is a view of a medical device placement system and its location on the body when being used to determine the location of a catheter near the heart, according to an embodiment.
  • FIG. 3 is a view of a paddle and its components in a retracted state, according to an embodiment.
  • FIG. 4 is a view of a paddle and its components in an extended state, according to an embodiment.
  • FIG. 5 is a reverse view of a paddle, according to an embodiment.
  • FIG. 6 is a view of a paddle and its components, according to an alternate embodiment.
  • FIG. 7 is a view of a paddle and its components, according to an alternate embodiment.
  • FIG. 8A is a side view of an extendable ECG electrode housing, according to an embodiment.
  • FIG. 8B is a top view of an extendable ECG electrode housing, according to an embodiment.
  • FIG. 9 is a diagram showing the interaction of a medical device placement system with a wireless computing device, according to an alternate embodiment.
  • FIG. 10 is a schematic diagram showing the communication between elements comprising a device placement system, according to an embodiment.
  • FIG. 11 is a flowchart describing the process by which the PICC can be properly positioned, according to an embodiment.
  • FIG. 12 is a schematic diagram illustrating the inputs and functional components of a software application designed to interface with a medical device placement system, according to an embodiment.
  • FIG. 13 is an exemplary mobile device screen illustrating a default home display, according to an embodiment.
  • FIG. 14 is an exemplary mobile device screen illustrating a patient information entry display, according to an embodiment.
  • FIG. 15 is an exemplary mobile device screen illustrating a surface ECG display, according to an embodiment.
  • FIG. 16 is an exemplary mobile device screen illustrating a surface ECG display snapshot, according to an embodiment.
  • FIG. 17 is an exemplary mobile device screen illustrating a surface snapshot save screen, according to an embodiment.
  • FIG. 18 is an exemplary mobile device screen illustrating an internal ECG display, according to an embodiment.
  • FIG. 19 is an exemplary mobile device screen illustrating an ECG zoom feature, according to an embodiment.
  • FIG. 20 is an exemplary mobile device screen illustrating an internal snapshot save screen, according to an embodiment.
  • FIG. 21 is an exemplary mobile device screen illustrating a normal application functioning, according to an embodiment.
  • FIG. 22 is an exemplary mobile device screen illustrating a procedural checklist, according to an embodiment.
  • FIG. 23 is an exemplary mobile device screen illustrating a patient procedure information display, according to an embodiment.
  • FIG. 24 is an exemplary mobile device screen illustrating a print function, according to an embodiment.
  • FIG. 25 is a schematic diagramming illustrating the elements of a remote mobile device and a patient data network, according to an embodiment.
  • FIG. 1 is a view of the prior art medical device placement system and its location on the body when being used to determine the location of a catheter tip 102 near the heart.
  • the current technology used to locate a catheter tip 102 within a patient 105 requires the use of several pieces of equipment, all of which provide a direct connection through cords 107 , 109 between the patient and a computer.
  • a stylet 101 controls the insertion of a peripherally inserted central catheter (PICC) 100 .
  • PICC peripherally inserted central catheter
  • a catheter tip 102 can comprise a sensor coil (not pictured) for sensing the magnetic field created by the two or more coils (not pictured) housed within a paddle 104 .
  • the electrocardiogram (ECG) electrodes 103 and the paddle 104 can each contact the surface of a patient 105 and can also be plugged into a computer 106 through a corded connection 107 .
  • a remote control 108 is on the cord 109 that runs from the stylet 101 to a computer 106 .
  • This remote control 108 is not sterile and requires special treatment prior to each user, who must keep his or her hands sterile while touching the remote 108 in order to control the display on a computer screen 110 . Control of the display 110 is necessary to document the screen images, as well as switch from the location-based technology to the ECG system when necessary.
  • the current practice requires the user to place a bag 150 that has been sterilized by autoclave over the entire remote 108 and plug the stylet 101 cord 109 into the remote 108 through this bag 150 . This process must be carefully followed to prevent contamination of the user's hands.
  • the present medical device placement system provides a wireless connection via Bluetooth technology between the sensor devices and the computer.
  • the use of wireless technology removes the cords that are required to connect the patient and the computer. Therefore, with the present invention the patient can be completely isolated from the computer displaying information from the location determination system.
  • the computer system that can only serve this single display function can be replaced with the use of a common mobile computing device, such as a tablet computer or smart phone.
  • the software used to display and control the system can be integrated into a software application, which can allow the user to control the system without contacting a surface, maintaining the sterile environment without additional time-consuming processes.
  • FIG. 2 is a view of a medical device placement system and its location on the body when it is being used to determine the location of a catheter near the heart, according to an embodiment.
  • the PICC 100 When positioning a catheter near the heart, the PICC 100 is initially inserted into a peripheral location, such as an arm or a leg, through the use of an insertion site 221 that comprises an incision. The PICC 100 can then be guided through veins within the body to the heart using the stylet 101 .
  • the location of the PICC 100 particularly its tip 102 , must be precisely determined so that the medical procedure being performed is beneficial, not harmful, to the patient.
  • ECG electrodes 103 can be located on the patient's chest 105 in locations that are known to provide a good ECG signal.
  • the paddle 104 can then be placed onto or above the center of the patient's chest 105 as well.
  • the electrodes 103 can be connected the paddle 104 .
  • the electrodes 103 can be housed within the paddle 104 when not in use.
  • the electrodes 103 can be extended from the paddle 104 using spring-loaded coils 227 that are housed within the paddle 104 . After use, the coils 227 can be retracted back into the paddle 104 .
  • Data as used herein can comprise at least two types of data, electrocardiograph (ECG) data and catheter tip location data.
  • ECG electrocardiograph
  • Data includes both the original analog signals which are detected from the respective components (e.g., electrodes, sensor coils, stylet.) and also the digital representations of the analog signals.
  • a bridge wire 229 can also connect the stylet 101 to the paddle 104 at a connection juncture 230 in order for the stylet to transmit the ECG detected from the heart to the paddle.
  • the stylet 101 can also communicate the ECG data obtained from the catheter tip 102 via Bluetooth or other wireless transmitter to the paddle 104 , in which case, the bridge wire 229 between the stylet 101 and the paddle 104 would not be necessary.
  • the paddle 104 can house a processor (not pictured) that is used to convert and interpret the catheter tip location data supplied from the paddle 104 , and the ECG data, in the form of electrical signals, generated from the electrodes 103 and stylet 101 .
  • the location data and ECG data can then be encrypted and sent via Bluetooth or other wireless transmission means to the mobile device 228 .
  • the location data and ECG data entering the paddle 104 can be sent to the mobile device 228 using Bluetooth or another wireless communication means.
  • each element comprising the system houses a Bluetooth or other wireless transmitter the data generated from each element can be sent directly from the electrodes 103 , stylet 101 and paddle 104 without the need for the location data and ECG data to be sent to the paddle 104 first.
  • FIG. 3 is a view of a paddle 104 and its components in a retracted state, according to an embodiment.
  • the ECG electrodes 103 can be contained within the paddle 104 .
  • the paddle can have at least three ECG electrodes 103 and extendable ECG electrode housings 950 .
  • the ECG cords 227 can be coiled under the ECG electrodes 103 when contracted.
  • the paddle 104 can also contain a wireless transmitter 300 , which can be a Bluetooth transmitter.
  • the paddle 104 can also contain a battery 301 , which can be a rechargeable lithium ion battery, or other suitable energy storage mechanism.
  • the paddle can contain a jack 302 configured to receive the PICC lead cable 229 .
  • the PICC lead cable 229 can attach at the bottom of the paddle 104 .
  • FIG. 4 is a view of a paddle 104 and its components in an extended state, according to an embodiment.
  • the ECG electrodes 103 can be extended from the paddle 104 .
  • the paddle can have at least three ECG electrodes 103 and extendable ECG electrode housings 950 .
  • the ECG cords 227 can be visible when the ECG electrodes 103 are extended away from the paddle 104 .
  • FIG. 5 is a reverse view of a paddle 104 , according to an embodiment.
  • the backside of the paddle 104 can have multiple feet 905 , in order for the paddle 104 to rest on a patient's chest (not shown) comfortably.
  • the feet 905 can be made of a non-slip material, such as rubber, in order for the paddle 104 to rest securely on the patient's chest.
  • the feet 905 can be positioned in such a manner so as not to interfere with any of the extendable components of the paddle 104 .
  • FIG. 6 is a view of a paddle 104 and its components, according to an alternate embodiment.
  • the paddle 104 can contain at least two tracking coils 500 , which can be used to detect the catheter tip (not shown) as it moves into the proper position.
  • the tracking coils 500 can be made of a ferrous metal or composite such that an electrical current is generated as the stylet wire enters its detectable area.
  • Catheter tip location data can be three analog signals, generated by measuring the electrical current values of the individual tracking coils as the stylet wire passes in proximity.
  • the location data can be compiled and triangulated either by the processor in the paddle or the processor in the mobile device after being converted to a digital form in order to graphically display to a user the general location of the catheter tip.
  • the tracking coils 500 can be positioned such that they do not interfere with any of the extendable components of the paddle 104 . Additionally, the paddle 104 can contain at least three extendable ECG electrode housings 905 , a wireless transmitter, a battery, and a PICC lead cable port.
  • FIG. 7 is a view of a paddle 104 and its components, according to an alternate embodiment.
  • the paddle 104 can contain ECG lead input ports 911 , 912 , 913 , such that ECG electrodes (not shown) can be attachable to the paddle 104 .
  • the paddle can have a power button 910 located on the top of the paddle 104 , surrounded by a ring of material 915 , such as silicone, to prevent accidental activation or deactivation of the medical device placement system.
  • the paddle 104 can have grips 916 placed on the sides of the paddle 104 in order for a user to more easily maneuver the paddle 104 .
  • the grips 916 can be made of a non-slip material, such as rubber or composite, in order for the user to be able to maintain a strong grip on the paddle 104 .
  • the paddle can additionally comprise a wireless transmitter (not shown), a battery (not shown), and a PICC lead cable port 914 .
  • FIG. 8A is a side view of an extendable ECG electrode housing 950 , according to an embodiment.
  • the extendable ECG electrode housing 950 is modular in nature, such that a system 950 can be snapped into and out of a paddle (not shown) after it has outlived its usefulness.
  • the ECG electrode 103 can slip into a shield piece 904 when contracted, in order for the ECG electrode 103 to be protected.
  • the system base 902 can have a raised rim 901 in order for a sterile cover 900 to be attached over the ECG electrode 103 and its cable 227 .
  • the sterile cover 900 can be ridged in shape to allow greater expansion.
  • the sterile cover 900 can be made of plastic, latex, or other elastic, sterilized material.
  • FIG. 8B is a top view of an extendable ECG electrode housing 950 , according to an embodiment.
  • the ECG electrode 103 and its cable 227 can be connected to a wire spool 903 mounted inside the extendable ECG electrode housing 950 .
  • the wire spool 903 can be under tension, such that when the ECG electrode 103 is finished being used, the user can retract the ECG electrode cable 227 back into the system 950 .
  • the ECG electrode 103 can remain extended due to the wire spool 903 being unable to rotate because it locked by a latch (not shown).
  • FIG. 9 is a diagram showing the interaction of a medical device placement system with a mobile computing device 228 , according to an embodiment.
  • the mobile device 228 can utilize a software application (e.g., an app) to receive and display (such as in a graph form) the ECG data and location data supplied from the paddle 104 .
  • the software application can comprise software for controlling the display screen (not shown) and capturing location and ECG data.
  • the control methods can be a touch screen, voice command, motion activation, or any other process that can be used to indicate an action that should be performed by the application.
  • the method used to control the application does not require contact between the user and any surface that is not sterile.
  • the software can prompt the user to input required and optional information regarding the patient to open a case file. Once the case file has been opened the data received and interpreted by the application can be displayed on the screen and the process of properly locating the PICC inside the patient can begin.
  • the software should also pair the mobile device to the transmitter 303 so that it only receives signals from the transmitter 303 (such that if another patient is in the next room with a similar system those transmissions will be ignored).
  • the PICC can be inserted into the body through a vein 440 in the patient's arm 441 and the location-based system information can be displayed on the mobile device 228 .
  • the path of travel can be depicted on the screen.
  • This display can show the location and direction of the PICC 100 in relation to the SVC 442 and the heart 443 . If the PICC 100 is following the correct path while it is above the heart 443 , it will move downwardly towards the heart 443 . If the PICC 100 does not have the proper alignment and direction of travel at any time, the user can pull the PICC 100 back and realign it until it is traveling properly as seen on the display. The PICC can then be used for its intended medical purpose.
  • the paddle 104 and electrodes 103 can be removed from the patient using the same procedure as commonly known in the art.
  • the electrodes 103 can be completely wireless, wherein each electrode 103 would wirelessly send its ECG data to the paddle 104 using Bluetooth or other wireless technology. In which case, no wire connections would be necessary between the electrodes 103 and the paddle 104 .
  • the Bluetooth transponders in the electrodes can communicate directly with a mobile device 228 , without the need for the paddle 104 to receive the ECG data.
  • the paddle 104 can be a central information gathering station, in which case the location-based coils (not pictured) can be located in a separate device (not pictured) that can be placed directly on the patient's chest.
  • the separate device can either be connected by wire to the paddle 104 , or can comprise a Bluetooth or other wireless transmitter to communicate data with the paddle 104 or directly to the mobile device 228 .
  • the paddle 104 can house the location-based coils (not pictured) directly within the paddle 104 itself.
  • the paddle 104 can be powered using a rechargeable battery (not shown). After use, the paddle 104 can be stored in a charging dock (not shown) located at a central location. Additional features can be included in the charging dock that can allow for software updates and secure data transfer as well.
  • FIG. 10 is a schematic diagram showing the communication between elements comprising a device placement system 100 , according to an embodiment.
  • the location data and ECG data from the sensors comprising the ECG electrodes 600 , the ECG sensor on the catheter tip 601 that can be contained in the stylet (not shown), and the tracking coils (not shown), can be transferred to a processing unit 603 , located in the paddle 604 .
  • the ECG data from the electrodes 600 and the catheter tip 601 , as well as the location data generated by the tracking coils, are typically generated in analog form and can be converted to digital format using a digital/analog converter 602 , before being sent to the processing unit 603 .
  • the processing unit 302 within the paddle can be a microprocessor, and can compact the data and encrypt it for transmission.
  • the processing unit 603 (microprocessor) can be programmed to perform any operation associated with the paddle and associated devices.
  • a device wireless transceiver 605 which can be a Bluetooth transceiver, can also be located within the paddle 604 , and can then be used to wirelessly transmit and receive encrypted data to and from a mobile device 607 via the mobile wireless transceiver 606 , which can be a tablet, smart phone, etc.
  • the mobile device 607 can have its own mobile wireless transceiver 606 , which can be a Bluetooth receiver, and which receives wireless signals from the wireless transceiver 605 .
  • FIG. 11 is a flowchart describing the process by which the PICC can be properly positioned, according to an embodiment.
  • the PICC can be inserted into the body through a vein in a patient's arm and the location-based system information can be displayed on a mobile device.
  • the path of travel can be depicted on the screen by using the catheter tip location data generated by the paddle. This display can show the location and direction of the PICC in relation to the SVC and the heart. At this point, the user can switch the display to show the patient's ECG.
  • the height of the P-wave increases.
  • the maximum P-wave height can indicate that the PICC has been pushed to the proper location.
  • the user must push the catheter tip past this P-wave maximum, as in operation 704 .
  • the P-wave is reflected and a negative deflection can be observed, showing a P-wave decrease.
  • the user can then indicate to the application software that this image should be stored or printed.
  • the PICC can then be pulled back until the reflected peak disappears, returning to operation 703 . This point can correspond with the maximum height of the p-wave, which is the desired position for the catheter tip. If the PICC is pulled too far back, then operations 702 , 703 , and 704 can be repeated until proper positioning of the PICC is obtained.
  • the user can use a software application to perform several post-positioning processes.
  • the user can: save the images to local storage 706 , print the images 707 , send the images to the medical facility's main file system 709 , store the images in the patient's case file 710 , or transfer the images to a hard transfer device, such as a CD or USB drive 708 .
  • FIG. 12 is a schematic diagram illustrating the inputs and functional components of a software application 800 designed to interface with a medical device placement system, according to an embodiment.
  • the mobile device can utilize a software application 800 (e.g., an app) to receive and display (such as in a graph form) data 809 supplied from the paddle 104 or from the medical facilities central storage (not shown).
  • the software application can comprise software for controlling the display screen (not shown) 806 and capturing data 805 .
  • the control methods can be a touch screen 803 , voice command 801 , motion control 802 , or by remote control 804 .
  • the method used to control the application 800 does not require contact between the user and any surface that is not sterile.
  • the software can prompt the user to input required and optional information regarding the patient to open a case file. Once the case file has been opened the data received and interpreted by the application can be displayed on the screen and the process of properly locating the PICC inside the patient can begin.
  • the software should also contain a device differentiator 810 , pairing the mobile device (not shown) to the transmitter located on the paddle (not shown) such that it only receives signals from that unique transmitter (such that if another patient is in the next room with a similar system those transmissions will be ignored).
  • the use of a software application 800 can also provide many advantages over the current system.
  • the software can also comprise a support interface, wherein the user can contact a live help agent any time help is needed 807 , which prevents the need to stop a procedure if a technical problem arises.
  • the use of the application software 800 can also allow the system to interact with other software systems in the medical facility, including other systems that are currently affixed to the particular patients, such as vital signs, or patient chart history 808 .
  • the system can be scalable to interact with many different processes in the future.
  • Case files and the information within the case file can be viewable on the mobile device and can also be deleted if necessary 809 .
  • the user can also switch the image display to the ECG mode of the system 806 .
  • the P-wave of the ECG graph is the indicator of the PICC (not shown) location in relation to the SVC (not shown).
  • the user can indicate to the software application to take, store, or print an image of the normal ECG 805 .
  • the software application can then be programmed to display an adjusted view of the P-wave such that changes in this wave are more easily viewable by the user 806 .
  • the use of a software application on a mobile device can allow the user to utilize hardware that he or she is already familiar with, which reduces training time and mistakes that can be made due to unfamiliar equipment.
  • the user already familiar with the touch, swipe, and pinch actions used by most touchscreen devices, would be able to use the same gestures in the same manner on the present device.
  • the present system can also reduce manufacturing costs, as well as the cost for the end users. Without the need for a dedicated computing device, the end user can utilize equipment that is already in its possession.
  • the use of a mobile device can be much more convenient than the current technology due to its decreased size and weight and its inherent mobility in that it can be located in more positions that increase visibility and may increase performance and comfort of the user.
  • FIG. 13 is an exemplary mobile device screen illustrating a default home display, according to an embodiment. From this screen, the user can have the option of selecting: a file manager, having a list of procedures performed with associated patient information; settings and support, allowing the user to pair the app with another device or other administrative functions; launching an electronic medical records (EMR) database for the transferal of patient records; or beginning a new procedure.
  • EMR electronic medical records
  • FIG. 14 is an exemplary mobile device screen illustrating a patient information entry display, according to an embodiment. From the home screen, if the user begins a new procedure, the patient entry screen can appear. The user can enter a patient's name, and also add any optional notes in the “Notes” box. For training purposes, the user can elect to use the application in demo mode. For a live procedure, which can require the mobile device to be paired with an actual paddle, the user can select “Begin Procedure.”
  • FIG. 15 is an exemplary mobile device screen illustrating a surface ECG display, according to an embodiment.
  • a user Before any usable data can be obtained, a user can place the ECG pads upon the patient's body at the prescribed locations. From this screen, the user can observe and record the patient's normal ECG rhythm and heart rate. Pinch and zoom can be used to increase or decrease the view of the ECG data being displayed. All data generated and displayed on the mobile device can be saved in the patient's electronic record for later retrieval.
  • FIG. 16 is an exemplary mobile device screen illustrating a surface ECG display snapshot, according to an embodiment.
  • the user can take a snapshot of the ECG waveform by selecting the camera button. Using a digit, the user can drag the slider left or right until the desired ECG output is in the frame. While this is occurring, the ECG output can continue to be generated and read by the application. Once the user has framed the waveform, the user can accept the selection by pressing the “accept” button. If no snapshot is needed, the user can hit the “cancel” button. The snapshot taken can be saved and associated with the patient's record in the database.
  • FIG. 17 is an exemplary mobile device screen illustrating a surface snapshot save screen, according to an embodiment.
  • another screen can appear for the user to input a surface measurement.
  • the surface measurement can be the distance from the insertion site (determined by ultrasound) to the axillary junction (armpit) added to the distance from the axillary junction to the clavicle added to the distance from the clavicle to the intercostal space.
  • the measurement can be taken by a physical ruler.
  • the user can swipe a finger along the screen until the measured length is displayed, at which point the user can hit accept.
  • the screenshot, along with the measurement can be saved and displayed in one of the screenshot boxes along the upper portion of the display.
  • FIG. 18 is an exemplary mobile device screen illustrating an internal ECG display, according to an embodiment.
  • the user can use a digit to swipe the slider from “Surface” to “Internal.”
  • the user can then insert the catheter into the insertion site.
  • the ECG input can switch from the signal being measured by the surface ECG pads to the signal being measured by the tip stylet.
  • the color of the ECG line displayed can be changed to provide further visual cues to the user that the signal input has changed from the surface ECG pads to the internal stylet.
  • FIG. 19 is an exemplary mobile device screen illustrating an ECG zoom feature, according to an embodiment.
  • the user can alter the display of the ECG signal to more effectively visualize and isolate the P-wave during a procedure.
  • a patient with an elevated heart rate would generate an ECG with a compacted waveform, making identification difficult.
  • the user can select the zoom slider, and, by sliding the slider, widen and extend the displayed ECG waveforms such that they widen and heighten in amplitude.
  • a user can narrow and contract the displayed ECG waveforms using the opposite gesture. Zooming can apply to signals generated by the internal stylet, as well as the external ECG pads.
  • FIG. 20 is an exemplary mobile device screen illustrating an internal snapshot save screen, according to an embodiment.
  • the user can select an internal ECG snapshot to be saved in the same manner as the surface ECG.
  • the user can input the internal measurement of the length of the catheter that has been inserted into the patient. This can be determined by subtracting the amount of visible tick marks on the catheter, which can be marked at one centimeter intervals, from the total length of the catheter taken before insertion.
  • the user can slide a finger until the proper catheter length is displayed, and can hit accept to save and display the screenshot with the measurement.
  • FIG. 21 is an exemplary mobile device screen illustrating a normal application functioning, according to an embodiment.
  • screenshots are generated, they, along with the measurements associated with them, can be saved and displayed on the main display.
  • a typical procedure can require three screenshots: one of normal surface sinus rhythm, one illustrating a dip in the P-wave caused by the over extension of the catheter such that the stylet moves past the SA node, and final snapshot showing maximum P-wave after the catheter is drawn back from the dip point.
  • the user can hit the “Finish” button.
  • FIG. 22 is an exemplary mobile device screen illustrating a procedural checklist, according to an embodiment.
  • the application Before exiting procedure mode, the application can display a bundle protocol checklist for the user to utilize. The user can announce the protocol list members orally, or perform a silent check. If every member of the list has been accomplished, the user can press “Yes,” but if one or more of the checklist parameters have not been met, the user can press “No.” After selection, the user can press “OK” to exit the procedure mode.
  • FIG. 23 is an exemplary mobile device screen illustrating a patient procedure information display, according to an embodiment. Finishing a procedure, or selecting “File Manager” from the home display, can take the user to the patient procedure information display.
  • the date, time, and patient name can be indexed as a file name, which, if selected, can display the patient ID, date of procedure, notes, status of bundle protocol list being met, along with the screenshots captured during the procedure.
  • the procedural history can be uploaded to the EMR system, saved, or printed.
  • FIG. 24 is an exemplary mobile device screen illustrating a print function, according to an embodiment.
  • the mobile device can be paired with a wireless printer. From the patient procedure information display, the user can select the wireless printer, select the amount of copies, and direct the wireless printer to print the procedural record for placement in the patient's physical file.
  • FIG. 25 is a schematic diagramming illustrating the elements of a remote mobile device 1000 and a patient data network, according to an embodiment.
  • the remote mobile device 1000 can have a touch screen 1001 , which can be used to control the device, the system, as well as to display and manipulate data.
  • the mobile device 1000 can have random access memory (RAM) 1002 for the rapid storage and retrieval of data necessary for the mobile device's 1000 function.
  • the mobile device 1000 can have read only memory (ROM) 1003 for the storage of the mobile device's basic input and output system (BIOS).
  • the mobile device 1000 can have a processor 1004 for the manipulation of data and general computation.
  • the processor 1004 (microprocessor) can be programmed to perform any operation performed by the mobile device.
  • the mobile device 1000 can have local storage 1005 , which can be a hard disk drive or solid state drive, for the long-term storage of patient records, along with their associated location data and ECG data.
  • the mobile device 1000 can have a wireless transceiver 1006 for the communication of data to and from the device 1000 .
  • the transceiver can be configured for Bluetooth and/or wireless internet.
  • the mobile device 1000 can communicate patient records to a central database 1007 through its wireless transceiver 1006 .
  • the central database 1007 can store the patient records, and can transmit and deliver those records to other similar mobile devices 1008 that can be located in other rooms of the medical facility.
  • the central database 1007 can communicate with the mobile devices 1000 1008 through a facility intranet, or through an internet protocol such as FTP or WebDAV.

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MX2016013152A MX2016013152A (es) 2014-04-08 2015-04-08 Sistema de colocacion de dispositivo medico y metodo para su uso.
BR112016023578A BR112016023578A2 (pt) 2014-04-08 2015-04-08 sistema de posicionamento de dispositivo médico e um método para seu uso
CN201580030425.XA CN107072570A (zh) 2014-04-08 2015-04-08 医疗装置布置系统及其使用方法
EP15777248.4A EP3128906A4 (en) 2014-04-08 2015-04-08 Medical device placement system and a method for its use
JP2017504605A JP2017515623A (ja) 2014-04-08 2015-04-08 医療機器配置システム、及びその使用方法
CA2945306A CA2945306A1 (en) 2014-04-08 2015-04-08 Medical device placement system and a method for its use
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US11607150B2 (en) 2023-03-21
CN107072570A (zh) 2017-08-18
WO2015157398A1 (en) 2015-10-15
US20200205695A1 (en) 2020-07-02
MX2016013152A (es) 2017-12-14
BR112016023578A2 (pt) 2017-12-26

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