SYSTEMS AND METHODS FOR ESTIMATING CENTRAL ARTERIAL BLOOD PRESSURE OF A PATIENT
    2.
    发明申请
    SYSTEMS AND METHODS FOR ESTIMATING CENTRAL ARTERIAL BLOOD PRESSURE OF A PATIENT 审中-公开
    用于估计患者中枢性血压的系统和方法

    公开(公告)号:US20120215117A1

    公开(公告)日:2012-08-23

    申请号:US13033465

    申请日:2011-02-23

    IPC分类号: A61B5/0215

    摘要: In specific embodiments, a method for estimating a patient's central arterial blood pressure (CBP) for use with an implantable system, comprises (a) using an implanted sensor at a first site to obtain a first signal indicative of changes in arterial blood volume at the first site, the first site being along one or more peripheral arterial structures of the patient, (b) using an implanted sensor at a second site to obtain a second signal indicative of changes in arterial blood volume at the second site, the second site being a distance from the first site downstream along an arterial path of the peripheral arterial structure of the patient, and (c) using implanted electrodes to obtain a signal indicative of electrical activity of the patient's heart. The method further comprises (d) determining a time t1 from a predetermined feature of the signal indicative of electrical activity to a predetermined feature of one of the first and second signals, the time t1 being a first pulse arrival time (PAT1) indicative of how long it takes a pulse wave to travel from the patient's aorta to one of the first and second sites, (e) determining a time t2 from a predetermined feature of the signal indicative of electrical activity to a predetermined feature of the other of the first and second signals, the time t2 being a second pulse arrival time (PAT2) indicative of how long it takes a pulse wave to travel from the patient's aorta to the other of the first and second sites, and (f) estimating the patient's central arterial blood pressure (CBP) based on the first pulse arrival time (PAT1) and the second pulse arrival time (PAT2).

    摘要翻译: 在具体实施例中,用于估计与可植入系统一起使用的患者中心动脉血压(CBP)的方法包括:(a)在第一部位使用植入的传感器以获得指示第一位置处的动脉血容量变化的第一信号 第一部位,沿着患者的一个或多个外周动脉结构,(b)在第二部位使用植入的传感器获得指示第二部位的动脉血容量变化的第二信号,第二部位为 距患者的外周动脉结构的动脉途径下游的第一部位的距离,以及(c)使用植入电极获得表示患者心脏的电活动的信号。 该方法还包括(d)从指示电活动的信号的预定特征到第一和第二信号中的一个的预定特征来确定时间t1,时间t1是表示第一和第二信号的第一脉冲到达时间(PAT1) 长时间,脉搏波从患者主动脉行进到第一和第二部位之一,(e)从指示电活动的信号的预定特征到第一和第二部分另一个的预定特征确定时间t2,以及 第二信号,时间t2是第二脉冲到达时间(PAT2),其指示脉搏波从患者主动脉行进到第一和第二部位另一个所需的时间,以及(f)估计患者的中心动脉血 基于第一脉冲到达时间(PAT1)和第二脉冲到达时间(PAT2)的压力(CBP)。

    ARTERIAL BLOOD PRESSURE MONITORING DEVICES, SYSTEMS AND METHODS FOR USE WHILE PACING
    4.
    发明申请
    ARTERIAL BLOOD PRESSURE MONITORING DEVICES, SYSTEMS AND METHODS FOR USE WHILE PACING 有权
    动脉血压监测装置,系统和使用方法

    公开(公告)号:US20110009755A1

    公开(公告)日:2011-01-13

    申请号:US12637574

    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 while a patient's heart is being paced. 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 a paced cardiac event to one or more predetermined features of the signal indicative of changes in arterial blood volume. Based on at 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,用于在患者的心脏起搏时监测患者的动脉血压。 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起搏心脏事件到指示动脉血容量变化的信号的一个或多个预定特征的时间来确定每个度量。 基于指示PAT的度量,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/或这些值的变化 。

    Electromechanical delay (EMD) monitoring devices, systems and methods
    8.
    发明授权
    Electromechanical delay (EMD) monitoring devices, systems and methods 有权
    机电延迟(EMD)监测装置,系统和方法

    公开(公告)号:US08321017B2

    公开(公告)日:2012-11-27

    申请号:US12637596

    申请日:2009-12-14

    IPC分类号: A61N1/368

    摘要: Implantable systems, and methods for use therewith, enable the monitoring of a patient's electromechanical delay (EMD) and arterial blood pressure. Paced cardiac events are caused by delivering sufficient pacing stimulation to cause capture. A cardiogenic impedance (CI) signal, indicative of cardiac contractile activity in response to the pacing stimulation being delivered, is obtained. One or more predetermined features of the CI signal are detected, and a value indicative of the patient's EMD is determined by determining a time between a delivered pacing stimulation and at least one of the detected one or more features of the CI signal. The value indicative of EMD can be used to more accurately determine metrics indicative of pulse arrival time (PAT), which can be used to estimate arterial blood pressure.

    摘要翻译: 可植入系统及其使用的方法能够监测患者的机电延迟(EMD)和动脉血压。 节奏心脏事件是由提供足够的起搏刺激引起的捕获引起的。 获得指示响应于起搏刺激被递送的心脏收缩活动的心源阻抗(CI)信号。 检测CI信号的一个或多个预定特征,并且通过确定发出的起搏刺激与检测到的CI信号的一个或多个特征中的至少一个之间的时间来确定指示患者的EMD的值。 可以使用指示EMD的值来更精确地确定指示脉冲到达时间(PAT)的度量,其可用于估计动脉血压。