Cardiac activation sequence monitoring for ischemia detection
    5.
    发明申请
    Cardiac activation sequence monitoring for ischemia detection 有权
    心脏激活序列监测缺血检测

    公开(公告)号:US20060116593A1

    公开(公告)日:2006-06-01

    申请号:US11079744

    申请日:2005-03-14

    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。

    Automatic orientation determination for ECG measurements using multiple electrodes
    6.
    发明申请
    Automatic orientation determination for ECG measurements using multiple electrodes 有权
    使用多个电极的ECG测量的自动取向确定

    公开(公告)号:US20050288600A1

    公开(公告)日:2005-12-29

    申请号:US10876008

    申请日:2004-06-24

    摘要: Cardiac monitoring and/or stimulation methods and systems provide monitoring, defibrillation and/or pacing therapies. A signal processor receives a plurality of composite signals associated with a plurality of sources, separates a signal using a source separation algorithm, and identifies a cardiac signal using a selected vector. The signal processor may iteratively separate signals from the plurality of composite signals until the cardiac signal is identified. The selected vector may be updated if desired or necessary. A method of signal separation involves detecting a plurality of composite signals at a plurality of locations, separating a signal using source separation, and selecting a vector that provides a cardiac signal. The separation may include a principal component analysis and/or an independent component analysis. Vectors may be selected and updated based on changes of position and/or orientation of implanted components and changes in patient parameters such as patient condition, cardiac signal-to-noise ratio, and disease progression.

    摘要翻译: 心脏监测和/或刺激方法和系统提供监测,除颤和/或起搏治疗。 信号处理器接收与多个源相关联的多个复合信号,使用源分离算法分离信号,并使用所选择的向量来识别心脏信号。 信号处理器可以迭代地分离来自多个复合信号的信号,直到识别出心脏信号。 如果需要或必要,可以更新所选择的向量。 信号分离的方法包括在多个位置检测多个复合信号,使用源分离分离信号,以及选择提供心脏信号的向量。 分离可以包括主成分分析和/或独立成分分析。 可以基于植入组件的位置和/或取向的改变以及患者参数(例如患者状况,心脏信噪比和疾病进展)的变化来选择和更新载体。

    Ischemia detection using a heart sound sensor
    8.
    发明授权
    Ischemia detection using a heart sound sensor 有权
    使用心脏声音传感器进行缺血检测

    公开(公告)号:US07922669B2

    公开(公告)日:2011-04-12

    申请号:US11148107

    申请日:2005-06-08

    IPC分类号: A61B5/02

    摘要: A system comprising an implantable medical device (IMD) includes an implantable heart sound sensor to produce an electrical signal representative of at least one heart sound. The heart sound is associated with mechanical activity of a patient's heart. Additionally, the IMD includes a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal, and a signal analyzer circuit coupled to the heart sound sensor interface circuit. The signal analyzer circuit measures a baseline heart sound signal, and deems that an ischemic event has occurred using, among other things, a measured subsequent change in the heart sound signal from the established baseline heart sound signal.

    摘要翻译: 包括可植入医疗装置(IMD)的系统包括可植入心音传感器,以产生代表至少一个心音的电信号。 心脏声音与患者心脏的机械活动有关。 另外,IMD包括耦合到心脏声音传感器以产生心脏声音信号的心脏声音传感器接口电路,以及耦合到心脏声音传感器接口电路的信号分析器电路。 信号分析器电路测量基线心音信号,并且认为已经发生了缺血事件,其中使用来自已建立的基线心音信号的心音信号的测量后续变化。

    ISCHEMIA DETECTION USING A HEART SOUND SENSOR
    10.
    发明申请
    ISCHEMIA DETECTION USING A HEART SOUND SENSOR 有权
    使用心音传感器进行ISCHEMIA检测

    公开(公告)号:US20090287106A1

    公开(公告)日:2009-11-19

    申请号:US12510962

    申请日:2009-07-28

    IPC分类号: A61B5/02

    摘要: A system comprising an implantable medical device (IMD) includes an implantable heart sound sensor to produce an electrical signal representative of at least one heart sound. The heart sound is associated with mechanical activity of a patient's heart. Additionally, the IMD includes a heart sound sensor interface circuit coupled to the heart sound sensor to produce a heart sound signal, and a signal analyzer circuit coupled to the heart sound sensor interface circuit. The signal analyzer circuit measures a baseline heart sound signal, and deems that an ischemic event has occurred using, among other things, a measured subsequent change in the heart sound signal from the established baseline heart sound signal.

    摘要翻译: 包括可植入医疗装置(IMD)的系统包括可植入心音传感器,以产生代表至少一个心音的电信号。 心脏声音与患者心脏的机械活动有关。 另外,IMD包括耦合到心脏声音传感器以产生心脏声音信号的心脏声音传感器接口电路,以及耦合到心脏声音传感器接口电路的信号分析器电路。 信号分析器电路测量基线心音信号,并且认为已经发生了缺血事件,其中使用来自已建立的基线心音信号的心音信号的测量后续变化。