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    Establishing a secure communication link
    11.
    发明授权
    Establishing a secure communication link 有权

    公开(公告)号：US11522919B2

    公开(公告)日：2022-12-06

    申请号：US16263752

    申请日：2019-01-31

    Applicant: Medtronic, Inc.

    Inventor： Hyun J Yoon ,  Bo Zhang ,  Robert Michael Ecker ,  Ryan Wyszynski ,  Joseph C Green ,  David J. Peichel ,  Sudar Shields ,  Nicholas C. Wine ,  Drew J. Thwaites

    IPC: H04L9/40 ,  H04L9/06 ,  H04W12/04 ,  H04W52/02 ,  A61N1/372 ,  H04W12/63

    Abstract: This disclosure is directed to devices, systems, and techniques for establishing a secure connection between two or more devices. In some examples, a device is configured for wireless communication. The device comprises signal reception circuitry configured to receive communications transmitted according to at least a first communication protocol, communication circuitry configured for wireless communication according to at least a second communication protocol, and processing circuitry electrically coupled to the signal reception circuitry and the communication circuitry. The processing circuitry is configured to receive, via the signal reception circuitry, a first signal according to the first communication protocol. In response to receiving the first signal, the processing circuitry is further configured to transmit, via the communication circuitry, a second signal according to the second communication protocol and establish a secure link according to the second communication protocol.

    METHOD FOR POWER MONITORING AND DYNAMICALLY MANAGING POWER IN A FULLY IMPLANTED LVAD SYSTEM
    12.
    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
    13.
    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
    14.
    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.

    DETECTING HEATING OF IMPLANTED COIL HERMETIC PACKAGE WHEN MISALIGNED
    17.
    发明公开
    DETECTING HEATING OF IMPLANTED COIL HERMETIC PACKAGE WHEN MISALIGNED 审中-公开

    公开(公告)号：US20230414926A1

    公开(公告)日：2023-12-28

    申请号：US18251367

    申请日：2021-09-22

    Applicant: Medtronic, Inc.

    Inventor： Danielle S. Mathiesen ,  Eric A. Schilling ,  David J. Peichel

    IPC: A61M60/875 ,  H02J50/90

    CPC classification number: A61M60/875 ,  H02J50/90 ,  A61M2205/8243 ,  H02J2310/23

    Abstract: A method of monitoring heating of a hermetic package of an implanted transcutaneous energy transfer system (TETS) coil, the method includes monitoring a power transfer between the implanted TETS coil and an external TETS coil; detecting an amount of power lost during the power transfer; determining if the amount of power lost during the power transfer is above a first predetermined threshold; if the power lost is above the first predetermined threshold, determining if a misalignment between the implanted TETS coil and the external TETS coil is greater than a predetermined distance; and if the misalignment is greater than the predetermined distance, generating an alert to align the external TETS coil with the implanted TETS coil.

    Method of detecting presence of implanted power transfer coil
    19.
    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.

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