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    DETECTING THE ONSET OF SENSING ISSUES USING SHORT INTERVALS
    11.
    发明申请
    DETECTING THE ONSET OF SENSING ISSUES USING SHORT INTERVALS 有权

    公开(公告)号：US20210393966A1

    公开(公告)日：2021-12-23

    申请号：US16904477

    申请日：2020-06-17

    Applicant: Medtronic, Inc.

    Inventor： Bruce D. Gunderson

    IPC: A61N1/37 ,  A61N1/362 ,  A61N1/39

    Abstract: The disclosure describes an enhancement to lead monitoring techniques, which uses a sensing integrity counter (SIC). The techniques of this disclosure may enhance lead monitoring techniques by detecting possible sensing issues based on a significant increase in periodic, e.g., daily, SIC counts relative to previous periods. Some issues with sensing cardiac signals via implantable cardiac leads can result in an implantable medical device (IMD) measuring very short intervals between what appears to be sensed heart beats. Examples of issues include insulation breach, conductor fracture, or poor electrical connection, which may cause noise that appears to be an R-wave. The IMD may detect the noise, along with actual R-waves, and determine that there are relatively short (e.g., less than a threshold) intervals between the “R-waves.” A significant increase in the number or frequency of very short intervals between R-waves may indicate the date/time of a significant sensing issue.

    Detecting lead dislodgement during atrial fibrillation
    12.
    发明授权
    Detecting lead dislodgement during atrial fibrillation 有权

    公开(公告)号：US10751530B2

    公开(公告)日：2020-08-25

    申请号：US16200788

    申请日：2018-11-27

    Applicant: Medtronic, Inc.

    Inventor： Bruce D. Gunderson

    IPC: A61N1/08 ,  A61B5/042 ,  A61B5/046 ,  A61N1/05 ,  A61N1/39 ,  A61B5/00 ,  A61B5/0424

    Abstract: A medical device system and method for detecting dislodgement of a lead determines one or more characteristics of a cardiac signal received via the lead that are associated with dislodgement of the lead during atrial fibrillation, and detects dislodgement of the ventricular lead based on the determined characteristics. The medical device and system provides a lead dislodgment alert in response to detecting dislodgement. In some examples, an implantable medical device withholds delivery of a defibrillation therapy based on detecting dislodgement of the lead.

    DETECTING VENTRICULAR LEAD DISLODGEMENT
    13.
    发明申请
    DETECTING VENTRICULAR LEAD DISLODGEMENT 审中-公开

    公开(公告)号：US20180161572A1

    公开(公告)日：2018-06-14

    申请号：US15836283

    申请日：2017-12-08

    Applicant: Medtronic, Inc.

    Inventor： Bruce D. Gunderson ,  Charles D. Swerdlow

    IPC: A61N1/08 ,  A61B5/042 ,  A61B5/046 ,  A61N1/39

    Abstract: Detecting dislodgement of a ventricular lead coupled to an implantable medical device comprises sensing a near-field cardiac EGM via a first electrode of the ventricular lead and a far-field cardiac EGM via a second electrode of the ventricular lead, identifying, R-waves in the near-field cardiac EGM and the far-field cardiac EGM. determining a near-field value of one or more R-wave amplitude metrics based on amplitudes of R-waves identified in the near-field cardiac EGM and a far-field value of the one or more R-wave amplitude metrics based on amplitudes of R-waves identified in the far-field cardiac EGM, detecting dislodgement of the ventricular lead based on at least one of the near-field value or the far-field value of the one or more R-wave amplitude metrics; and providing a lead dislodgment alert in response to detecting the dislodgement of the ventricular lead.

    HIGH VOLTAGE THERAPY DIVERSION ALGORITHMS
    15.
    发明申请
    HIGH VOLTAGE THERAPY DIVERSION ALGORITHMS 审中-公开
    高电压治疗方法

    公开(公告)号：US20140121716A1

    公开(公告)日：2014-05-01

    申请号：US13665183

    申请日：2012-10-31

    Applicant: MEDTRONIC, INC.

    Inventor： David A. Casavant ,  Mark E. Gibbs ,  Bruce D. Gunderson ,  Robert A. Betzold

    IPC: A61N1/39 ,  A61N1/365

    CPC classification number: A61N1/3956 ,  A61N1/3918 ,  A61N1/3931 ,  A61N1/3943 ,  A61N1/3962 ,  A61N1/3981

    Abstract: An implantable medical device capable of delivering high voltage therapy includes a therapy delivery module comprising a high voltage therapy delivery circuit, a high voltage short circuit protection circuit configured to terminate delivery of a high voltage pulse by the therapy delivery module in response to a short circuit condition, and a sensing module for detecting a need for a high voltage therapy. The device further includes a therapy control unit configured to control the therapy delivery module to deliver a shock pulse in response to detecting the need for the high voltage therapy. The control unit detects a termination of the high voltage pulse by the protection circuit; a truncated shock charge remaining on the high voltage therapy delivery circuit upon terminating the high voltage pulse. The control unit controls the therapy delivery module to deliver a next shock pulse at the remaining truncated shock charge.

    Abstract translation: 能够提供高电压治疗的可植入医疗装置包括治疗递送模块，其包括高电压治疗输送电路，高压短路保护电路，其配置为响应于短路而终止治疗输送模块输送高电压脉冲 条件和用于检测对高电压治疗的需要的感测模块。 该装置还包括治疗控制单元，其被配置为响应于检测到对高电压治疗的需要而控制治疗递送模块递送冲击脉冲。 控制单元通过保护电路检测高电压脉冲的终止; 终止高电压脉冲时，在高电压治疗输送电路上残留的截断的冲击电荷。 控制单元控制治疗递送模块以在剩余截断的休克电荷下递送下一个冲击脉冲。

    COUGH DETECTION USING FRONTAL ACCELEROMETER
    17.
    发明公开
    COUGH DETECTION USING FRONTAL ACCELEROMETER 审中-公开

    公开(公告)号：US20240041346A1

    公开(公告)日：2024-02-08

    申请号：US18492073

    申请日：2023-10-23

    Applicant: Medtronic, Inc.

    Inventor： Bruce D. Gunderson ,  Gautham Rajagopal

    IPC: A61B5/08 ,  A61B5/00

    CPC classification number: A61B5/0823 ,  A61B5/686 ,  A61B5/7207 ,  A61B5/7246 ,  A61B2562/0219

    Abstract: This disclosure is directed to techniques for recording and recognizing physiological parameter patterns associated with symptoms. A medical device system includes a medical device including an accelerometer configured to collect an accelerometer signal that indicates one or more patient movements that occur during a cough. Additionally, the medical device system includes processing circuitry configured to: determine whether the accelerometer signal satisfies a set of criteria corresponding to a cough pattern comprising a smooth increase from a baseline, then a sharp decrease, a peak within the sharp decrease, then a gradual return to the baseline; and identify a cough based on the determination that the accelerometer signal satisfies the set of criteria.

    CHANGE IN PHYSIOLOGICAL PARAMETER IN RESPONSE TO EXERTION EVENT
    18.
    发明申请
    CHANGE IN PHYSIOLOGICAL PARAMETER IN RESPONSE TO EXERTION EVENT 有权

    公开(公告)号：US20220409064A1

    公开(公告)日：2022-12-29

    申请号：US17929198

    申请日：2022-09-01

    Applicant: Medtronic, Inc.

    Inventor： Bruce D. Gunderson

    IPC: A61B5/0205 ,  A61B5/00 ,  A61B5/11 ,  A61N1/39 ,  A61N1/362 ,  A61B5/287 ,  A61B5/021 ,  A61B5/0245

    Abstract: A method for monitoring health of a subject based on a physiological response to physical exertion, by processing circuitry of a medical device system, is described that includes detecting a plurality of exertion events of the subject based on a first sensed signal that varies as a function of movement of the subject. The method further includes determining a response of a physiological parameter of the subject to the exertion event for each of the detected exertion events based on second sensed signal that varies as a function of the physiological parameter. The method further includes determining that a change in the responses over time crosses threshold and generating an alert to a user based on the determination that the change crosses the threshold.

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