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    Low-power system clock calibration based on a high-accuracy reference clock
    1.
    发明授权
    Low-power system clock calibration based on a high-accuracy reference clock 有权
    基于高精度参考时钟的低功耗系统时钟校准

    公开(公告)号：US09079040B2

    公开(公告)日：2015-07-14

    申请号：US14473066

    申请日：2014-08-29

    Applicant: Medtronic, Inc.

    Inventor： Matthew C Bond ,  Charles R Gordon ,  Weizheng Liang ,  James D Reinke ,  Jonathan P Roberts

    IPC: A61N1/00 ,  A61N1/372 ,  A61N1/02 ,  A61N1/08 ,  G06F1/12 ,  G06F1/04

    CPC classification number: A61N1/37264 ,  A61N1/025 ,  A61N1/08 ,  A61N1/372 ,  A61N1/37276 ,  G06F1/04 ,  G06F1/12

    Abstract: Various techniques are described for periodically performing a calibration routine to calibrate a low-power system clock within an implantable medical device (IMD) based on a high accuracy reference clock also included in the IMD. The system clock is powered continuously, and the reference clock is only powered on during the calibration routine. The techniques include determining a clock error of the system clock based on a difference between frequencies of the system clock and the reference clock over a fixed number of clock cycles, and adjusting a trim value of the system clock to compensate for the clock error. Calibrating the system clock with a delta-sigma loop, for example, reduces the clock error over time. This allows accurate adjustment of the system clock to compensate for errors due to trim resolution, circuit noise and temperature.

    Abstract translation: 描述了各种技术，用于周期性地执行校准例程以基于也包括在IMD中的高精度参考时钟校准可植入医疗设备（IMD）内的低功率系统时钟。 系统时钟连续供电，参考时钟仅在校准程序中打开电源。 这些技术包括基于系统时钟的频率和固定数量的时钟周期上的参考时钟之间的差异来确定系统时钟的时钟误差，以及调整系统时钟的修整值以补偿时钟误差。 例如，用delta-sigma循环校准系统时钟可以减少时间误差。 这允许系统时钟的精确调整，以补偿由于调整分辨率，电路噪声和温度引起的误差。

    Systems and methods for leadless pacing and shock therapy
    2.
    发明授权
    Systems and methods for leadless pacing and shock therapy 有权
    无引导起搏和休克疗法的系统和方法

    公开(公告)号：US09072914B2

    公开(公告)日：2015-07-07

    申请号：US14178711

    申请日：2014-02-12

    Applicant: Medtronic, Inc.

    Inventor： Saul E Greenhut ,  Robert J Nehls ,  Walter H Olson ,  Xusheng Zhang ,  Wade M Demmer ,  Troy E Jackson ,  James D Reinke

    IPC: A61N1/00 ,  A61N1/39 ,  A61N1/372 ,  A61N1/375 ,  A61N1/362

    CPC classification number: A61N1/3962 ,  A61N1/056 ,  A61N1/3621 ,  A61N1/36585 ,  A61N1/37288 ,  A61N1/3756 ,  A61N1/3987

    Abstract: Techniques and systems for monitoring cardiac arrhythmias and delivering electrical stimulation therapy using a subcutaneous implantable cardioverter defibrillator (SICD) and a leadless pacing device (LPD) are described. For example, the SICD may detect a tachyarrhythmia within a first electrical signal from a heart and determine, based on the tachyarrhythmia, to deliver anti-tachyarrhythmia shock therapy to the patient to treat the detected arrhythmia. The LPD may receive communication from the SICD requesting the LPD deliver anti-tachycardia pacing to the heart and determine, based on a second electrical signal from the heart sensed by the LPD, whether to deliver anti-tachycardia pacing (ATP) to the heart. In this manner, the SICD and LPD may communicate to coordinate ATP and/or cardioversion/defibrillation therapy. In another example, the LPD may be configured to deliver post-shock pacing after detecting delivery of anti-tachyarrhythmia shock therapy.

    Abstract translation: 描述了使用皮下植入式心律转复除颤器（SICD）和无引线起搏装置（LPD）监测心律不齐和递送电刺激治疗的技术和系统。 例如，SICD可以检测来自心脏的第一电信号内的快速性心律失常，并且基于快速性心律失常确定将抗心律失常休克疗法递送给患者以治疗所检测到的心律失常。 LPD可以接收来自SICD的通信，请求LPD向心脏提供抗心动过速起搏，并且基于由LPD感测到的心脏的第二电信号确定是否将心动过速（ATP）提供给心脏。 以这种方式，SICD和LPD可以通信以协调ATP和/或心脏复律/除颤疗法。 在另一个示例中，LPD可以被配置为在检测到抗快速性心律失常性休克疗法的递送之后递送后冲击起搏。

    SYSTEMS AND METHODS FOR LEADLESS PACING AND SHOCK THERAPY
    7.
    发明申请
    SYSTEMS AND METHODS FOR LEADLESS PACING AND SHOCK THERAPY 有权
    无铅和防震治疗的系统和方法

    公开(公告)号：US20140214104A1

    公开(公告)日：2014-07-31

    申请号：US14178711

    申请日：2014-02-12

    Applicant: Medtronic, Inc.

    Inventor： Saul E Greenhut ,  Robert J Nehls ,  Walter H Olson ,  Xusheng Zhang ,  Wade M Demmer ,  Troy E Jackson ,  James D Reinke

    IPC: A61N1/39 ,  A61N1/362 ,  A61N1/372

    CPC classification number: A61N1/3962 ,  A61N1/056 ,  A61N1/3621 ,  A61N1/36585 ,  A61N1/37288 ,  A61N1/3756 ,  A61N1/3987

    Abstract: Techniques and systems for monitoring cardiac arrhythmias and delivering electrical stimulation therapy using a subcutaneous implantable cardioverter defibrillator (SICD) and a leadless pacing device (LPD) are described. For example, the SICD may detect a tachyarrhythmia within a first electrical signal from a heart and determine, based on the tachyarrhythmia, to deliver anti-tachyarrhythmia shock therapy to the patient to treat the detected arrhythmia. The LPD may receive communication from the SICD requesting the LPD deliver anti-tachycardia pacing to the heart and determine, based on a second electrical signal from the heart sensed by the LPD, whether to deliver anti-tachycardia pacing (ATP) to the heart. In this manner, the SICD and LPD may communicate to coordinate ATP and/or cardioversion/defibrillation therapy. In another example, the LPD may be configured to deliver post-shock pacing after detecting delivery of anti-tachyarrhythmia shock therapy.

    Abstract translation: 描述了使用皮下植入式心律转复除颤器（SICD）和无引线起搏装置（LPD）监测心律不齐和递送电刺激治疗的技术和系统。 例如，SICD可以检测来自心脏的第一电信号内的快速性心律失常，并且基于快速性心律失常确定将抗心律失常休克疗法递送给患者以治疗所检测到的心律失常。 LPD可以接收来自SICD的通信，请求LPD向心脏提供抗心动过速起搏，并且基于由LPD感测到的心脏的第二电信号确定是否将心动过速（ATP）提供给心脏。 以这种方式，SICD和LPD可以通信以协调ATP和/或心脏复律/除颤疗法。 在另一个示例中，LPD可以被配置为在检测到抗快速性心律失常性休克疗法的递送之后递送后冲击起搏。

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