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    METHOD FOR POWER MONITORING AND DYNAMICALLY MANAGING POWER IN A FULLY IMPLANTED LVAD SYSTEM
    1.
    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
    2.
    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.

    Method for power monitoring and dynamically managing power in a fully implanted LVAD system
    3.
    发明授权
    Method for power monitoring and dynamically managing power in a fully implanted LVAD system 有权

    公开(公告)号：US12023480B2

    公开(公告)日：2024-07-02

    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

    CPC classification number: 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.

    Method of detecting presence of implanted power transfer coil
    5.
    发明授权
    Method of detecting presence of implanted power transfer coil 有权

    公开(公告)号：US11660458B2

    公开(公告)日：2023-05-30

    申请号：US17353893

    申请日：2021-06-22

    Applicant: Medtronic, Inc.

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

    IPC: A61N1/37 ,  A61N1/378 ,  H02J50/80 ,  H02J50/90 ,  H02J50/12 ,  A61N1/372

    CPC classification number: A61N1/3787 ,  A61N1/37211 ,  H02J50/12 ,  H02J50/80 ,  H02J50/90

    Abstract: A method and apparatus related to detecting the presence of a power transfer coil implanted in a patient are disclosed. According to the aspect, an external device of a medical implant system is provided, the external device having an external coil and processing circuitry. The processing circuitry is configured to monitor a resonance frequency associated with the external coil. When the resonance frequency changes as a distance between the external coil and an expected location of an internal coil, then the processing circuitry is configured to conclude that the internal coil has been detected. When the resonance frequency ramps up to a steady state value at a rate that falls below a rate threshold, then the processing circuitry is configured to conclude that the internal coil is connected to an internal load.

    Digitally timed CMOS rectifier for wireless power transfer
    6.
    发明授权
    Digitally timed CMOS rectifier for wireless power transfer 有权

    公开(公告)号：US11239698B1

    公开(公告)日：2022-02-01

    申请号：US17087685

    申请日：2020-11-03

    Applicant: Medtronic, Inc.

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

    IPC: H02J50/10 ,  H02J50/80 ,  H02M7/219 ,  A61M60/871 ,  A61M60/148

    Abstract: A digitally timed complementary metal oxide semiconductor (CMOS) rectifier for wireless power transfer in an implanted medical device is provided. According to one aspect, a voltage rectification circuit for a medical device having an internal coil and internal circuitry includes a voltage rectifier comprising a complementary metal oxide semiconductor (CMOS) circuit having low-side first type MOS transistors and upper cross-coupled second type MOS transistors. The voltage rectifier may be configured to output a rectified received voltage, each low-side first type MOS transistor being configured with an first type MOS body diode, the low-side first type MOS transistors being enabled by a timing signal to provide conduction through the low-side first type MOS transistors while bypassing conduction through the first type MOS body diode during a time window having a duration determined by voltage level crossings of the received voltage.

    Method of detecting presence of implanted power transfer coil
    9.
    发明授权
    Method of detecting presence of implanted power transfer coil 有权

    公开(公告)号：US11063479B1

    公开(公告)日：2021-07-13

    申请号：US16841904

    申请日：2020-04-07

    Applicant: Medtronic, Inc.

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

    IPC: H02J50/80 ,  H02J50/90 ,  H02J50/12 ,  A61N1/378

    Abstract: A method and apparatus related to detecting the presence of a power transfer coil implanted in a patient are disclosed. According to the aspect, an external device of a medical implant system is provided, the external device having an external coil and processing circuitry. The processing circuitry is configured to monitor a resonance frequency associated with the external coil. When the resonance frequency changes as a distance between the external coil and an expected location of an internal coil, then the processing circuitry is configured to conclude that the internal coil has been detected. When the resonance frequency ramps up to a steady state value at a rate that falls below a rate threshold, then the processing circuitry is configured to conclude that the internal coil is connected to an internal load.

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