System and method for generating a trend parameter based on respiration rate distribution
    91.
    发明申请
    System and method for generating a trend parameter based on respiration rate distribution 有权
    基于呼吸速率分布生成趋势参数的系统和方法

    公开(公告)号:US20070073169A1

    公开(公告)日:2007-03-29

    申请号:US11438977

    申请日:2006-05-23

    IPC分类号: A61B5/02 A61B5/08

    摘要: Systems and methods provide for assessing the heart failure status of a patient and, more particularly, to generating a trend parameter based on a distribution of the patient's respiration rate. Systems and methods provide for detecting, using an implantable device or a patient-external device, patient respiration and computing a respiration rate based on the detected patient respiration. A distribution of the respiration rate is calculated, and a trend parameter based on the respiration rate distribution is generated. The trend parameter is indicative of a patient's heart failure status. An output signal indicative of the patient's heart failure status may be generated based on the trend parameter.

    摘要翻译: 系统和方法提供用于评估患者的心力衰竭状态,更具体地,用于基于患者的呼吸速率的分布来生成趋势参数。 系统和方法提供用于基于检测到的患者呼吸来检测,使用可植入装置或患者外部装置进行患者呼吸并计算呼吸速率。 计算呼吸率的分布,并生成基于呼吸率分布的趋势参数。 趋势参数表示患者的心力衰竭状态。 可以基于趋势参数生成表示患者心力衰竭状态的输出信号。

    Ischemia detection using a heart sound sensor
    92.
    发明申请
    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:US20060282000A1

    公开(公告)日:2006-12-14

    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。

    Closed loop cardiac resynchronization therapy using cardiac activation sequence information
    93.
    发明申请
    Closed loop cardiac resynchronization therapy using cardiac activation sequence information 有权
    闭环心脏再同步治疗使用心脏激活序列信息

    公开(公告)号:US20060253162A1

    公开(公告)日:2006-11-09

    申请号:US11125068

    申请日:2005-05-09

    IPC分类号: A61N1/365

    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 closed-loop cardiac resynchronization therapy using cardiac activation sequence information. Devices and methods involve sensing a plurality of composite cardiac signals using a plurality of electrodes, the electrodes configured for implantation in a patient. A source separation is performed using the sensed plurality of composite cardiac signals, producing one or more cardiac signal vectors associated with all or a portion of one or more cardiac activation sequences. A cardiac resynchronization therapy is adjusted using one or both of the one or more cardiac signal vectors and the signals associated with the one or more cardiac signal vectors. In further embodiments, the cardiac resynchronization therapy may be initiated, terminated, or one or more parameters of the resynchronization therapy may be altered.

    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。 心脏信号分离用于使用心脏激活序列信息来检测,监测,跟踪和/或趋势闭环心脏再同步治疗。 设备和方法包括使用多个电极感测多个复合心脏信号,所述电极被配置用于植入患者体内。 使用所感测的多个复合心脏信号进行源分离,产生与一个或多个心脏激活序列的全部或一部分相关联的一个或多个心脏信号载体。 使用一个或多个心脏信号向量和与一个或多个心脏信号载体相关联的信号中的一个或两个来调整心脏再同步治疗。 在另外的实施方案中,心脏再同步治疗可以被启动,终止,或者可以改变再同步治疗的一个或多个参数。

    Arrhythmia discrimination using electrocardiograms sensed from multiple implanted electrodes
    94.
    发明申请
    Arrhythmia discrimination using electrocardiograms sensed from multiple implanted electrodes 有权
    使用从多个植入电极感测的心电图的心律失常辨别

    公开(公告)号:US20060253044A1

    公开(公告)日:2006-11-09

    申请号:US11125020

    申请日:2005-05-09

    IPC分类号: A61B5/04

    CPC分类号: A61B5/04011 A61B5/7203

    摘要: Cardiac monitoring and/or stimulation methods and systems provide for monitoring, diagnosing, defibrillation and pacing therapies, or a combination of these capabilities, including cardiac systems incorporating or cooperating with neuro-stimulating devices, drug pumps, or other therapies. Embodiments of the present invention relate generally to implantable medical devices employing automated cardiac activation sequence monitoring and/or tracking for arrhythmia discrimination. Embodiments of the invention are directed to devices and methods involving sensing a plurality of composite cardiac signals using a plurality of implantable electrodes. A source separation is performed using the sensed plurality of composite cardiac signals and the separation produces one or more cardiac signal vectors associated with one or more cardiac activation sequences that is indicative of ischemia. A change of the one or more cardiac signal vectors is detected using the one or more cardiac signal vectors. Cardiac arrhythmias are discriminated using the one or more cardiac signal vectors.

    摘要翻译: 心脏监测和/或刺激方法和系统提供监测,诊断,除颤和起搏治疗,或这些功能的组合,包括结合或与神经刺激装置,药物泵或其他疗法组合的心脏系统。 本发明的实施方案一般涉及使用自动心脏激活序列监测和/或跟踪用于心律失常鉴别的可植入医疗装置。 本发明的实施例涉及使用多个可植入电极感测多个复合心脏信号的装置和方法。 使用感测的多个复合心脏信号进行源分离,并且分离产生与指示缺血的一个或多个心脏激活序列相关联的一个或多个心脏信号载体。 使用一个或多个心脏信号矢量检测一个或多个心脏信号矢量的改变。 使用一个或多个心脏信号载体来区分心律失常。

    Posture monitoring using cardiac activation sequences
    95.
    发明申请
    Posture monitoring using cardiac activation sequences 有权
    使用心脏激活序列的姿势监测

    公开(公告)号:US20060253043A1

    公开(公告)日:2006-11-09

    申请号:US11124950

    申请日:2005-05-09

    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 a patient's posture using cardiac activation sequence information. Devices and methods in accordance with the present invention involve sensing a plurality of composite cardiac signals using a plurality of implantable electrodes. A source separation is performed using the composite cardiac signals, which produces one or more cardiac signal vectors associated with all or a portion of one or more cardiac activation sequences. A change in a patient's posture is detected using the cardiac signal vectors. Further embodiments involve sensing the plurality of composite cardiac signals during the patient's predominant cardiac rhythm before detecting the change in the patient's posture. Other embodiments involve discriminating between one of a postural related change and a cardiac rhythm related change using the cardiac signal 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/或趋向于患者的姿势。 根据本发明的装置和方法涉及使用多个可植入电极感测多个复合心脏信号。 使用复合心脏信号进行源分离,其产生与一个或多个心脏激活序列的全部或一部分相关联的一个或多个心脏信号载体。 使用心脏信号矢量检测患者姿势的变化。 另外的实施例涉及在检测患者姿势的变化之前在患者的主要心律期间感测多个复合心脏信号。 其他实施例涉及使用心脏信号矢量区分姿势相关变化和心律相关变化中的一个。

    Cardiac activation sequence monitoring for ischemia detection
    98.
    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
    100.
    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。