Cardiac activation sequence monitoring for ischemia detection
    11.
    发明授权
    Cardiac activation sequence monitoring for ischemia detection 失效
    心脏激活序列监测缺血检测

    公开(公告)号:US08626276B2

    公开(公告)日:2014-01-07

    申请号:US12847657

    申请日:2010-07-30

    IPC分类号: A61B5/04

    摘要: Cardiac monitoring and/or stimulation methods and systems that provide one or more of monitoring, diagnosing, defibrillation, and pacing. Cardiac signal separation is employed to detect, monitor, track and/or trend ischemia using cardiac activation sequence information. Ischemia detection may involve sensing composite cardiac signals using implantable electrodes, and performing a signal separation that produces one or more cardiac activation signal vectors associated with one or more cardiac activation sequences. A change in the signal vector may be detected using subsequent separations. The change may be an elevation or depression of the ST segment of a cardiac cycle or other change indicative of myocardial ischemia, myocardial infarction, or other pathological change. The change may be used to predict, quantify, and/or qualify an event such as an arrhythmia, a myocardial infarction, or other pathologic change. Information associated with the vectors may be stored and used to track the vectors.

    摘要翻译: 提供一种或多种监测,诊断,除颤和起搏的心脏监测和/或刺激方法和系统。 使用心脏信号分离来使用心脏激活序列信息来检测,监测,跟踪和/或趋势性缺血。 缺血检测可以涉及使用可植入电极感测复合心脏信号,并且执行产生与一个或多个心脏激活序列相关联的一个或多个心脏激活信号载体的信号分离。 可以使用后续分离来检测信号矢量的变化。 该变化可以是心​​脏周期的ST段的升高或抑制或指示心肌缺血,心肌梗死或其他病理变化的其它变化。 该变化可用于预测,量化和/或限定诸如心律失常,心肌梗死或其它病理变化的事件。 与矢量相关联的信息可以被存储并用于跟踪矢量。

    Modulation of AV delay to control ventricular interval variability
    15.
    发明申请
    Modulation of AV delay to control ventricular interval variability 有权
    调节AV延迟以控制心室间隔变异性

    公开(公告)号:US20090054944A1

    公开(公告)日:2009-02-26

    申请号:US11894081

    申请日:2007-08-20

    IPC分类号: A61N1/365

    CPC分类号: A61N1/368 A61N1/3682

    摘要: System and methods provide pacing therapy that modulates the atrioventricular (AV) delay to control ventricular interval variability. A base AV delay is determined as a function of heart rate. For each cardiac cycle, the base AV delay is modulated to reduce beat-to-beat variability of successive ventricular beats. The modulated AV delay compensates for variability of successive atrial beats. For example, modulation of the base AV delay may involve varying the AV delay inversely with a change in atrial interval.

    摘要翻译: 系统和方法提供调节房室(AV)延迟以控制心室间隔变异性的起搏治疗。 基础AV延迟被确定为心率的函数。 对于每个心动周期,调整基底AV延迟以减少连续心室搏动的搏动到搏动变化。 调制的AV延迟补偿连续心房搏动的变异性。 例如,基本AV延迟的调制可能涉及改变AV延迟与心房间隔的变化相反。

    Respiratory parameters for arrhythmia detection and therapy
    17.
    发明授权
    Respiratory parameters for arrhythmia detection and therapy 有权
    心律失常检测和治疗的呼吸参数

    公开(公告)号:US08639324B2

    公开(公告)日:2014-01-28

    申请号:US13353515

    申请日:2012-01-19

    IPC分类号: A61B5/0205 A61N1/365 A61N1/39

    摘要: An implantable or ambulatory medical device can include a cardiac signal sensing circuit configured to provide a sensed cardiac depolarization signal of a heart of a subject, a respiration sensing circuit configured to provide a signal representative of respiration of the subject, and a control circuit communicatively coupled to the cardiac signal sensing circuit and the respiration circuit. The control circuit includes a tachyarrhythmia detection circuit configured to determine heart rate using the depolarization signal, determine a respiration parameter of the subject using the respiration signal, calculate a ratio using the determined heart rate and the determined respiration parameter, generate an indication of tachyarrhythmia when the calculated ratio satisfies a specified detection ratio threshold value, and provide the indication of tachyarrhythmia to a user or process.

    摘要翻译: 植入式或动态医疗装置可以包括心脏信号感测电路,该心脏信号感测电路被配置为提供受检者的心脏的感测的心脏去极化信号,被配置为提供代表对象呼吸的信号的呼吸感测电路,以及通信耦合的控制电路 到心脏信号感测电路和呼吸电路。 控制电路包括快速性心律失常检测电路,其被配置为使用去极化信号来确定心率,使用呼吸信号确定受试者的呼吸参数,使用所确定的心率和确定的呼吸参数来计算比率,产生快速性心律失常的指示, 所计算的比率满足规定的检测率阈值,并向用户或过程提供快速性心律失常的指示。

    Cardiopulmonary functional status assessment via metabolic response detection by implantable cardiac device
    18.
    发明授权
    Cardiopulmonary functional status assessment via metabolic response detection by implantable cardiac device 有权
    通过植入式心脏装置的代谢反应检测的心肺功能状态评估

    公开(公告)号:US08538525B2

    公开(公告)日:2013-09-17

    申请号:US13371705

    申请日:2012-02-13

    IPC分类号: A61N1/00

    摘要: An implantable cardiac device is configured and programmed to assess a patient's cardiopulmonary function by evaluating the patient's minute ventilation response. Such evaluation may be performed by computing a minute ventilation response slope, defined as the ratio of an incremental change in minute ventilation to an incremental change in measured activity level. The minute ventilation response slope may then be compared with a normal range to assess the patient's functional status.

    摘要翻译: 可植入心脏装置被配置和编程以通过评估患者的分钟通气反应来评估患者的心肺功能。 这种评估可以通过计算每分钟通气量的增加变化与测量活动水平的增量变化的比例来计算每分钟通气响应斜率来进行。 然后将分钟通气反应斜率与正常范围进行比较,以评估患者的功能状态。