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    METHOD FOR REGULATING TETS POWER TRANSFER
    3.
    发明申请
    METHOD FOR REGULATING TETS POWER TRANSFER 有权

    公开(公告)号：US20220257923A1

    公开(公告)日：2022-08-18

    申请号：US17174717

    申请日：2021-02-12

    Applicant: Medtronic, Inc.

    Inventor： Jacob A. Roe ,  Joel B. Artmann ,  Jonathan P. Roberts ,  David J. Peichel

    IPC: A61M60/873 ,  H02J50/12 ,  A61M60/178

    Abstract: In an implanted medical device system, an internal controller, external power transmitter and methods for regulation of TETS power for an implanted medical device system are disclosed. According to one aspect, a method in an external power transmitter of an implanted medical device system includes determining a current in an external coil of the external power transmitter, multiplying the determined current by a supply voltage to determine a power delivered to the external coil, and controlling the power delivered to the external coil by adjusting the current in the external coil.

    Tissue conduction communication using ramped drive signal
    6.
    发明授权
    Tissue conduction communication using ramped drive signal 有权

    公开(公告)号：US12179025B2

    公开(公告)日：2024-12-31

    申请号：US18320192

    申请日：2023-05-18

    Applicant: Medtronic, Inc.

    Inventor： David J. Peichel ,  Jonathan P. Roberts ,  James D. Reinke ,  Michael B. Terry

    IPC: A61N1/372 ,  A61N1/375 ,  A61N1/39 ,  A61N1/05

    Abstract: A device, such as an IMD, having a tissue conductance communication (TCC) transmitter controls a drive signal circuit and a polarity switching circuit by a controller of the TCC transmitter to generate an alternating current (AC) ramp on signal having a peak amplitude that is stepped up from a starting peak-to-peak amplitude to an ending peak-to-peak amplitude according to a step increment and step up interval. The TCC transmitter is further controlled to transmit the AC ramp on signal from the drive signal circuit and the polarity switching circuit via a coupling capacitor coupled to a transmitting electrode vector coupleable to the IMD. After the AC ramp on signal, the TCC transmitter transmits at least one TCC signal to a receiving device.

    METHOD FOR POWER MONITORING AND DYNAMICALLY MANAGING POWER IN A FULLY IMPLANTED LVAD SYSTEM
    7.
    发明申请
    METHOD FOR POWER MONITORING AND DYNAMICALLY MANAGING POWER IN A FULLY IMPLANTED LVAD SYSTEM 有权

    公开(公告)号：US20220193393A1

    公开(公告)日：2022-06-23

    申请号：US17130197

    申请日：2020-12-22

    Applicant: Medtronic, Inc.

    Inventor： Joel B. Artmann ,  Jacob A. Roe ,  Jonathan P. Roberts ,  David J. Peichel

    IPC: A61M60/876 ,  A61M60/508

    Abstract: In an implanted medical device system, an internal controller, external power transmitter and methods for monitoring and dynamically managing power in an implanted medical device system are disclosed. According to one aspect, an internal controller is configured to provide power to a motor of an implanted medical device, the power being drawn from at least one of an internal battery and an internal coil, the at least one of the internal battery and the internal coil providing a supplied voltage. The internal controller includes processing circuitry configured to switch to one of the internal battery, the internal coil and a combination of the internal battery and the internal coil, based on a comparison of the supplied voltage to a threshold.

    CLOSED LOOP POWER REGULATION FOR A TRANSCUTANEOUS ENERGY SYSTEM
    8.
    发明申请
    CLOSED LOOP POWER REGULATION FOR A TRANSCUTANEOUS ENERGY SYSTEM 有权

    公开(公告)号：US20210408843A1

    公开(公告)日：2021-12-30

    申请号：US17361669

    申请日：2021-06-29

    Applicant: Medtronic, Inc.

    Inventor： Jonathan P. Roberts ,  Joel B. Artmann ,  David J. Peichel ,  Jacob A. Roe ,  Michael Kemmerer

    IPC: H02J50/80 ,  H02J50/10

    Abstract: A controller implantable within the body of a patient as part of a left ventricular assist device (LVAD) system and a method therefore are provided. According to one aspect, the controller includes processing circuitry configured to determine a voltage difference by determining a difference between a first voltage obtained from an internal coil of the controller and a target voltage, and is further configured to encode the voltage difference to produce an encoded voltage difference message. The internal coil is configured to transmit the encoded voltage difference message to a power transmitter to enable closed loop control of power transfer from the power transmitter to the controller to drive the voltage difference toward zero.

    TISSUE CONDUCTION COMMUNICATION USING RAMPED DRIVE SIGNAL
    9.
    发明申请
    TISSUE CONDUCTION COMMUNICATION USING RAMPED DRIVE SIGNAL 有权

    公开(公告)号：US20210316149A1

    公开(公告)日：2021-10-14

    申请号：US17355905

    申请日：2021-06-23

    Applicant: Medtronic, Inc.

    Inventor： David J. Peichel ,  Jonathan P. Roberts ,  James D. Reinke ,  Michael B. Terry

    IPC: A61N1/372 ,  A61N1/375 ,  A61N1/39

    Abstract: A device, such as an IMD, having a tissue conductance communication (TCC) transmitter controls a drive signal circuit and a polarity switching circuit by a controller of the TCC transmitter to generate an alternating current (AC) ramp on signal having a peak amplitude that is stepped up from a starting peak-to-peak amplitude to an ending peak-to-peak amplitude according to a step increment and step up interval. The TCC transmitter is further controlled to transmit the AC ramp on signal from the drive signal circuit and the polarity switching circuit via a coupling capacitor coupled to a transmitting electrode vector coupleable to the IMD. After the AC ramp on signal, the TCC transmitter transmits at least one TCC signal to a receiving device.

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