Method and system for hemodynamic optimization using plethysmography
    1.
    发明授权
    Method and system for hemodynamic optimization using plethysmography 有权
    使用体积描记法进行血液动力学优化的方法和系统

    公开(公告)号:US08649865B2

    公开(公告)日:2014-02-11

    申请号:US12964625

    申请日:2010-12-09

    IPC分类号: A61N1/00

    摘要: Time delays between a feature of a signal indicative of electrical activity of a patient's heart and a feature of a plethysmograph signal indicative of changes in arterial blood volume are used to arrange the operation of an implantable device, such as a pacemaker. Shorter time delays between the feature of the signal indicative of electrical activity of a patient's heart and the feature of the plethysmograph signal indicative of changes in arterial blood volume are indicative of larger cardiac stroke volumes. The time delay can be used to select a pacing site or combination of pacing sites and/or to select a pacing interval set.

    摘要翻译: 使用指示患者心脏的电活动的信号的特征与指示动脉血容量变化的体积描记信号的特征之间的时间延迟来布置诸如起搏器的可植入装置的操作。 指示患者心脏的电活动的信号的特征与指示动脉血容量变化的体积描记器信号的特征之间的更短的时间延迟指示较大的心脏搏动量。 时间延迟可用于选择起搏站点或起搏站点的组合和/或选择起搏间隔集。

    Method and System for Hemodynamic Optimization Using Plethysmography
    2.
    发明申请
    Method and System for Hemodynamic Optimization Using Plethysmography 有权
    使用体积描记术进行血流动力学优化的方法和系统

    公开(公告)号:US20110144711A1

    公开(公告)日:2011-06-16

    申请号:US12964625

    申请日:2010-12-09

    IPC分类号: A61N1/36

    摘要: Time delays between a feature of a signal indicative of electrical activity of a patient's heart and a feature of a plethysmograph signal indicative of changes in arterial blood volume are used to arrange the operation of an implantable device, such as a pacemaker. Shorter time delays between the feature of the signal indicative of electrical activity of a patient's heart and the feature of the plethysmograph signal indicative of changes in arterial blood volume are indicative of larger cardiac stroke volumes. The time delay can be used to select a pacing site or combination of pacing sites and/or to select a pacing interval set.

    摘要翻译: 使用指示患者心脏的电活动的信号的特征与指示动脉血容量变化的体积描记信号的特征之间的时间延迟来布置诸如起搏器的可植入装置的操作。 指示患者心脏的电活动的信号的特征与指示动脉血容量变化的体积描记器信号的特征之间的更短的时间延迟指示较大的心脏搏动量。 时间延迟可用于选择起搏站点或起搏站点的组合和/或选择起搏间隔集。

    ARTERIAL BLOOD PRESSURE MONITORING DEVICES, SYSTEMS AND METHODS USING CARDIOGENIC IMPEDANCE SIGNAL
    3.
    发明申请
    ARTERIAL BLOOD PRESSURE MONITORING DEVICES, SYSTEMS AND METHODS USING CARDIOGENIC IMPEDANCE SIGNAL 审中-公开
    动脉血压监测装置,系统和使用心脏阻力信号的方法

    公开(公告)号:US20110009754A1

    公开(公告)日:2011-01-13

    申请号:US12637489

    申请日:2009-12-14

    IPC分类号: A61B5/0215

    摘要: Provided herein are implantable systems, and methods for use therewith, for monitoring a patient's arterial blood pressure. Electrode(s) implanting within and/or on the patient's heart are used to obtain a cardiogenic impedance (CI) signal indicative of cardiac contractile activity. Additionally, a signal (e.g., PPG or IPG signal) indicative of changes in arterial blood volume remote from the patient's heart is obtained using a sensor or electrodes that are implanted remote from the patient's heart. One or more metrics indicative of pulse arrival time (PAT) are determined, where each metric can be determined by determining a time from one of the detected features of the CI signal to one of the detected features of the signal indicative of changes in arterial blood volume. Based on at least one of the metric(s) indicative of PAT, arterial blood pressure is estimated, which can include determining values indicative of systolic blood pressure, diastolic blood pressure, pulse pressure and/or mean arterial blood pressure, and/or changes in such values.

    摘要翻译: 本文提供了可植入系统及其使用的方法,用于监测患者的动脉血压。 使用植入在患者心脏内和/或患者心脏上的电极来获得指示心脏收缩活动的心源阻抗(CI)信号。 此外,使用远离患者心脏植入的传感器或电极获得指示远离患者心脏的动脉血容量变化的信号(例如,PPG或IPG信号)。 确定指示脉冲到达时间(PAT)的一个或多个度量,其中可以通过确定从CI信号的检测到的特征之一到检测到的指示动脉血液变化的特征之一的时间来确定每个度量 卷。 基于指示PAT的指标中的至少一个,估计动脉血压,其可以包括确定指示收缩压,舒张压,脉压和/或平均动脉血压的值,和/或变化 在这样的价值观。

    PRESSURE TRANSDUCER EQUIPPED CARDIAC PLUG
    4.
    发明申请
    PRESSURE TRANSDUCER EQUIPPED CARDIAC PLUG 审中-公开
    压力传感器配备的心脏插管

    公开(公告)号:US20130165965A1

    公开(公告)日:2013-06-27

    申请号:US13333793

    申请日:2011-12-21

    IPC分类号: A61B17/03

    摘要: Disclosed herein is a pressure sensing left atrial occluding implantable medical device. The implantable medical device includes a cardiac plug and a micro electro-mechanical system (“MEMS”). The cardiac plug includes an expandable lobe and an expandable disc proximal the lobe. The expandable lobe is configured to expand into an anchoring arrangement within the left atrial appendage. The expandable lobe is configured to expand into an occluding arrangement with the left atrial appendage. The MEMS is coupled to the cardiac plug proximal of the disc. The MEMS is configured to sense surrounding fluid pressure.

    摘要翻译: 本文公开了一种压力感测左心房闭塞可植入医疗装置。 可植入医疗装置包括心脏塞和微机电系统(“MEMS”)。 心脏塞子包括可伸缩瓣膜和靠近瓣膜的可扩张椎间盘。 可扩张瓣构造成在左心耳内扩张成锚定布置。 可扩张瓣配置成扩张成具有左心耳的闭塞装置。 MEMS耦合到盘的近端的心脏插塞。 MEMS构造成感测周围的流体压力。

    SYSTEMS AND METHODS FOR USE BY IMPLANTABLE MEDICAL DEVICES FOR DETECTING AND DISCRIMINATING STROKE AND CARDIAC ISCHEMIA USING ELECTROCARDIAC SIGNALS
    10.
    发明申请
    SYSTEMS AND METHODS FOR USE BY IMPLANTABLE MEDICAL DEVICES FOR DETECTING AND DISCRIMINATING STROKE AND CARDIAC ISCHEMIA USING ELECTROCARDIAC SIGNALS 有权
    用于通过电刺激信号检测和鉴别卒中和心脏病的植入式医疗设备使用的系统和方法

    公开(公告)号:US20130041274A1

    公开(公告)日:2013-02-14

    申请号:US13207307

    申请日:2011-08-10

    IPC分类号: A61B5/0468

    摘要: Techniques are provided for detecting and distinguishing stroke and cardiac ischemia based on electrocardiac signals. In one example, the device senses atrial and ventricular signals within the patient along a set of unipolar sensing vectors and identifies certain morphological features within the signals such as PR intervals, ST intervals, QT intervals, T-waves, etc. The device detects changes, if any, within the morphological features such as significant shifts in ST interval elevation or an inversion in T-wave shape, which are indicative of stroke or cardiac ischemia. By selectively comparing changes detected along different unipolar sensing vectors, the device distinguishes or discriminates stroke from cardiac ischemia within the patient. The discrimination may be corroborated using various physiological and hemodynamic parameters. In some examples, the device further identifies the location of the ischemia within the heart. In still other examples, the device detects cardiac ischemia occurring during stroke.

    摘要翻译: 提供了用于基于心电信号检测和区分中风和心脏缺血的技术。 在一个示例中,该装置沿着一组单极感测向量感测患者内的心房和心室信号,并且识别信号内的某些形态特征,例如PR间隔,ST间隔,QT间隔,T波等。该装置检测变化 (如果有的话)在形态学特征之中,例如ST间期升高的显着变化或T波形的反转,其指示中风或心脏缺血。 通过选择性地比较沿着不同的单极性感测向量检测的变化,该装置区分或区分患者体内的心脏缺血的中风。 可以使用各种生理和血液动力学参数来确认辨别。 在一些实例中,该装置还识别心脏内局部缺血的位置。 在另外的例子中,该装置检测在中风期间发生的心脏缺血。