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    CLOCK SYNCHRONIZATION IN AN IMPLANTABLE MEDICAL DEVICE SYSTEM
    3.
    发明申请
    CLOCK SYNCHRONIZATION IN AN IMPLANTABLE MEDICAL DEVICE SYSTEM 有权
    可插入医疗设备系统中的时钟同步

    公开(公告)号：US20130138991A1

    公开(公告)日：2013-05-30

    申请号：US13746818

    申请日：2013-01-22

    Applicant: Medtronic, Inc.

    Inventor： James D. Reinke ,  Robert M. Ecker ,  Kaustubh R. Patil ,  Michael B. Terry ,  Jonathan P. Roberts ,  Robert A. Corey

    IPC: G06F1/12 ,  G06F1/06

    CPC classification number: G06F1/12 ,  A61N1/37288 ,  G06F1/06

    Abstract: This disclosure is directed to the synchronization of clocks of a secondary implantable medical device (IMD) to a clock of a primary IMD. The secondary IMD includes a communications clock. The communications clock may be synchronized based on at least one received communications pulse. The secondary IMD further includes a general purpose clock different than the communications clock. The general purpose clock may be synchronized based on at least one received power pulse. The communications clock may also be synchronized based on the at least one received power pulse.

    Abstract translation: 本公开涉及二次可植入医疗装置（IMD）的时钟与主IMD的时钟的同步。 辅助IMD包括通信时钟。 通信时钟可以基于至少一个接收到的通信脉冲来同步。 次级IMD还包括与通信时钟不同的通用时钟。 可以基于至少一个接收的功率脉冲同步通用时钟。 通信时钟也可以基于至少一个接收的功率脉冲来同步。

    Calibration for ECAP sensing
    4.
    发明授权
    Calibration for ECAP sensing 有权

    公开(公告)号：US12208269B2

    公开(公告)日：2025-01-28

    申请号：US17654695

    申请日：2022-03-14

    Applicant: Medtronic, Inc.

    Inventor： Todd V. Smith ,  Robert A. Corey ,  Heba Tareq Omar ,  Kristin N. Hageman

    IPC: A61N1/36 ,  A61N1/05

    Abstract: Systems, devices, and techniques are described for calibrating a medical device that senses ECAP signals from a patient's nerve tissue. For example a method includes instructing, with processing circuitry, stimulation circuitry of a medical device to deliver, on stimulation electrodes of the medical device, an electrical stimulation signal having an amplitude substantially equal to zero to a patient, entering, with the processing circuitry subsequent to instructing the stimulation circuitry to deliver the electrical stimulation signal, a passive recharge state on stimulation electrode circuitry, and auto-zeroing, with the processing circuitry, inputs to an operational amplifier of sensing circuitry electrically coupled to sensing electrodes of the medical device while the stimulation electrode circuitry is in the passive recharge state.

    CALIBRATION FOR ECAP SENSING
    5.
    发明公开
    CALIBRATION FOR ECAP SENSING 审中-公开

    公开(公告)号：US20230285754A1

    公开(公告)日：2023-09-14

    申请号：US17654695

    申请日：2022-03-14

    Applicant: Medtronic, Inc.

    Inventor： Todd V. Smith ,  Robert A. Corey ,  Heba Tareq Omar ,  Kristin N. Hageman

    IPC: A61N1/36 ,  A61N1/05

    CPC classification number: A61N1/36139 ,  A61N1/0551 ,  A61N1/36153 ,  A61N1/36062

    Abstract: Systems, devices, and techniques are described for calibrating a medical device that senses ECAP signals from a patient's nerve tissue. For example a method includes: instructing, with processing circuitry, stimulation circuitry of a medical device to deliver, on stimulation electrodes of the medical device, an electrical stimulation signal having an amplitude substantially equal to zero to a patient; entering, with the processing circuitry subsequent to instructing the stimulation circuitry to deliver the electrical stimulation signal, a passive recharge state on stimulation electrode circuitry; and auto-zeroing, with the processing circuitry, inputs to an operational amplifier of sensing circuitry electrically coupled to sensing electrodes of the medical device while the stimulation electrode circuitry is in the passive recharge state.

    SENSING EVOKED COMPOUND ACTION POTENTIAL (ECAP)
    7.
    发明公开
    SENSING EVOKED COMPOUND ACTION POTENTIAL (ECAP) 审中-公开

    公开(公告)号：US20230264014A1

    公开(公告)日：2023-08-24

    申请号：US18161499

    申请日：2023-01-30

    Applicant: Medtronic, Inc.

    Inventor： Robert A. Corey ,  Joel A. Anderson ,  David A. Dinsmoor ,  Kristin N. Hageman ,  Scott R. Stanslaski ,  Todd V. Smith ,  Heba Tareq Omar

    IPC: A61N1/02

    CPC classification number: A61N1/025

    Abstract: A system for providing therapy to a patient includes stimulation generation circuitry, sensing circuitry, and processing circuitry. The processing circuitry is configured to cause storage of a first voltage at a first terminal at a first calibration capacitor and storage of a second voltage at a second terminal at a second calibration capacitor. The processing circuitry is configured to switch out a first calibration switch to prevent the first voltage stored at the first calibration capacitor from changing and switch out a second calibration switch to prevent the second voltage stored at the second calibration capacitor from changing and determine, with the sensing circuitry, a sensing signal based on the first voltage offset by a first calibration voltage stored by the first capacitor and based on the second voltage offset by a second calibration voltage stored by the second capacitor.

    ANALYZING ECAP SIGNALS
    9.
    发明申请
    ANALYZING ECAP SIGNALS 有权

    公开(公告)号：US20220008726A1

    公开(公告)日：2022-01-13

    申请号：US16924990

    申请日：2020-07-09

    Applicant: Medtronic, Inc.

    Inventor： Robert A. Corey ,  Kristin N. Hageman ,  David A. Dinsmoor ,  Hank Bink ,  Christopher L. Pulliam ,  Thomas Adamski

    IPC: A61N1/36 ,  A61N1/02

    Abstract: Systems, devices, and techniques are described for analyzing evoked compound action potentials (ECAP) signals to assess the effect of a delivered electrical stimulation signal. In one example, a system includes a stimulation generator configured to deliver a stimulation pulse to a patient, sensing circuitry configured to sense an evoked compound action potential (ECAP) signal evoked from the stimulation pulse, and processing circuitry. The processing circuitry may be configured to determine a maximum value of a derivative of the ECAP signal, determine a minimum value of the derivative of the ECAP signal, determine, based on the maximum value of the derivative and the minimum value of the derivative, a characteristic value of the ECAP signal, and determine, based on the characteristic value of the ECAP signal, at least one parameter value at least partially defining electrical stimulation therapy to be delivered to the patient.

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