SYSTEMS AND METHODS FOR SELECTIVELY LIMITING MULTI-SITE VENTRICULAR PACING DELAYS DURING OPTIMIZATION OF CARDIAC RESYNCHRONIZATION THERAPY PARAMETERS
    41.
    发明申请
    SYSTEMS AND METHODS FOR SELECTIVELY LIMITING MULTI-SITE VENTRICULAR PACING DELAYS DURING OPTIMIZATION OF CARDIAC RESYNCHRONIZATION THERAPY PARAMETERS 有权
    在优化心脏再生治疗参数的过程中,选择性限制多位置静态延迟的系统和方法

    公开(公告)号:US20120185012A1

    公开(公告)日:2012-07-19

    申请号:US13009404

    申请日:2011-01-19

    IPC分类号: A61N1/365

    摘要: Techniques are provided for use with implantable cardiac stimulation devices equipped for multi-site left ventricular (MSLV) cardiac pacing. Briefly, intraventricular and interventricular conduction delays are detected for paced cardiac events. Maximum pacing time delays are determined for use with MSLV pacing where the maximum pacing time delays are set based on the conduction delays to values sufficient to avoid capture problems due to wavefront propagation, such as fusion or lack of capture. MSLV pacing delays are then set to values no greater than the maximum pacing delays and cardiac resynchronization therapy (CRT) is delivered using the MSLV pacing delays. In an example where an optimal interventricular pacing delay (VV) is determined in advance using intracardiac electrogram-based or hemodynamic-based optimization techniques, the optimal value for VV can be used as a limiting factor when determining the maximum MSLV pacing time delays.

    摘要翻译: 提供技术用于配备用于多部位左心室(MSLV)心脏起搏的可植入心脏刺激装置。 简而言之,对于心跳事件,检测到心室内和室间传导延迟。 确定最大起搏时间延迟用于MSLV起搏,其中最大起搏时间延迟基于导通延迟设置为足以避免由于波前传播引起的捕获问题,例如融合或缺乏捕获。 然后将MSLV起搏延迟设置为不大于最大起搏延迟的值,并使用MSLV起搏延迟传递心脏再同步治疗(CRT)。 在使用基于心脏电图或基于血液动力学的优化技术预先确定最佳心室起搏延迟(VV)的示例中,当确定最大MSLV起搏时间延迟时,可以将VV的最佳值用作限制因素。

    Systems and methods for selectively limiting multi-site ventricular pacing delays during optimization of cardiac resynchronization therapy parameters
    42.
    发明授权
    Systems and methods for selectively limiting multi-site ventricular pacing delays during optimization of cardiac resynchronization therapy parameters 有权
    用于在优化心脏再同步治疗参数期间选择性限制多部位心室起搏延迟的系统和方法

    公开(公告)号:US08583230B2

    公开(公告)日:2013-11-12

    申请号:US13009404

    申请日:2011-01-19

    IPC分类号: A61N1/00

    摘要: Techniques are provided for use with implantable cardiac stimulation devices equipped for multi-site left ventricular (MSLV) cardiac pacing. Briefly, intraventricular and interventricular conduction delays are detected for paced cardiac events. Maximum pacing time delays are determined for use with MSLV pacing where the maximum pacing time delays are set based on the conduction delays to values sufficient to avoid capture problems due to wavefront propagation, such as fusion or lack of capture. MSLV pacing delays are then set to values no greater than the maximum pacing delays and cardiac resynchronization therapy (CRT) is delivered using the MSLV pacing delays. In an example where an optimal interventricular pacing delay (VV) is determined in advance using intracardiac electrogram-based or hemodynamic-based optimization techniques, the optimal value for VV can be used as a limiting factor when determining the maximum MSLV pacing time delays.

    摘要翻译: 提供技术用于配备用于多部位左心室(MSLV)心脏起搏的可植入心脏刺激装置。 简而言之,对于心跳事件,检测到心室内和室间传导延迟。 确定最大起搏时间延迟用于MSLV起搏,其中最大起搏时间延迟基于导通延迟设置为足以避免由于波前传播引起的捕获问题,例如融合或缺乏捕获。 然后将MSLV起搏延迟设置为不大于最大起搏延迟的值,并使用MSLV起搏延迟传递心脏再同步治疗(CRT)。 在使用基于心脏电图或基于血液动力学的优化技术预先确定最佳心室起搏延迟(VV)的示例中,当确定最大MSLV起搏时间延迟时,可以将VV的最佳值用作限制因素。

    Pre-ejection interval (PEI) monitoring devices, systems and methods
    43.
    发明授权
    Pre-ejection interval (PEI) monitoring devices, systems and methods 有权
    预喷射间隔(PEI)监测装置,系统和方法

    公开(公告)号:US08571642B2

    公开(公告)日:2013-10-29

    申请号:US12882084

    申请日:2010-09-14

    IPC分类号: A61B5/02

    摘要: Provided herein are implantable systems, and methods for use therewith, for monitoring a patient's pre-ejection interval (PEI). A signal indicative of cardiac electrical activity and a signal indicative of changes in arterial blood volume are obtained. One or more predetermined features of the signal indicative of cardiac electrical activity and the signal indicative of changes in arterial blood volume are detected. The patient's PEI is determined by determining an interval between the predetermined feature of the signal indicative of cardiac electrical activity and the predetermined feature of the signal indicative of changes in arterial blood volume.

    摘要翻译: 本文提供了可植入系统及其使用的方法,用于监测患者的预喷射间隔(PEI)。 获得指示心脏电活动的信号和指示动脉血容量变化的信号。 检测到指示心脏电活动的信号的一个或多个预定特征以及指示动脉血容量变化的信号。 通过确定指示心脏电活动的信号的预定特征与指示动脉血容量变化的信号的预定特征之间的间隔来确定患者的PEI。

    SYSTEMS AND METHODS FOR ESTIMATING CENTRAL ARTERIAL BLOOD PRESSURE OF A PATIENT
    45.
    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)。

    PRE-EJECTION INTERVAL (PEI) MONITORING DEVICES, SYSTEMS AND METHODS
    47.
    发明申请
    PRE-EJECTION INTERVAL (PEI) MONITORING DEVICES, SYSTEMS AND METHODS 有权
    预引导间隔(PEI)监控设备,系统和方法

    公开(公告)号:US20120065528A1

    公开(公告)日:2012-03-15

    申请号:US12882084

    申请日:2010-09-14

    IPC分类号: A61B5/042

    摘要: Provided herein are implantable systems, and methods for use therewith, for monitoring a patient's pre-ejection interval (PEI). A signal indicative of cardiac electrical activity and a signal indicative of changes in arterial blood volume are obtained. One or more predetermined features of the signal indicative of cardiac electrical activity and the signal indicative of changes in arterial blood volume are detected. The patient's PEI is determined by determining an interval between the predetermined feature of the signal indicative of cardiac electrical activity and the predetermined feature of the signal indicative of changes in arterial blood volume.

    摘要翻译: 本文提供了可植入系统及其使用的方法,用于监测患者的预喷射间隔(PEI)。 获得指示心脏电活动的信号和指示动脉血容量变化的信号。 检测到指示心脏电活动的信号的一个或多个预定特征以及指示动脉血容量变化的信号。 通过确定指示心脏电活动的信号的预定特征与指示动脉血容量变化的信号的预定特征之间的间隔来确定患者的PEI。

    Methods and Systems for Monitoring Aterial Stiffness
    48.
    发明申请
    Methods and Systems for Monitoring Aterial Stiffness 审中-公开
    监测动静刚度的方法和系统

    公开(公告)号:US20120065527A1

    公开(公告)日:2012-03-15

    申请号:US12882099

    申请日:2010-09-14

    IPC分类号: A61B5/0295

    摘要: Implanted systems and methods for monitoring a patient's arterial stiffness are provided. An implanted sensor is used to produce a signal indicative of changes in arterial blood volume for a plurality of beats of the patient's heart. A pulse duration metric is determined for each of a plurality of pulses of the signal, wherein each pulse of the signal corresponds to a beat of the patient's heart. Arterial stiffness is monitored based on the determined pulse duration metric for the plurality of pulses of the signal. This can include monitoring arterial stiffness based on a dispersion of the pulse duration metric and/or an average of the pulse duration metric.

    摘要翻译: 提供了用于监测患者动脉硬度的植入系统和方法。 植入的传感器用于产生指示患者心脏的多个节拍的动脉血容量变化的信号。 为信号的多个脉冲中的每一个确定脉冲持续时间度量,其中信号的每个脉冲对应于患者心脏的搏动。 基于确定的信号的多个脉冲的脉冲持续时间度量监测动脉硬度。 这可以包括基于脉冲持续时间度量的偏差和/或脉冲持续时间度量的平均值监视动脉硬度。

    System and method for monitoring diastolic function using an implantable medical device
    49.
    发明授权
    System and method for monitoring diastolic function using an implantable medical device 有权
    使用可植入医疗装置监测舒张功能的系统和方法

    公开(公告)号:US08874213B2

    公开(公告)日:2014-10-28

    申请号:US13601569

    申请日:2012-08-31

    摘要: Diastolic function is monitored within a patient using a pacemaker or other implantable medical device. In one example, the implantable device uses morphological parameters derived from the T-wave evoked response waveform as proxies for ventricular relaxation rate and ventricular compliance. In particular, the magnitude of the peak of the T-wave evoked response is employed as a proxy for ventricular compliance. The maximum slew rate of the T-wave evoked response following its peak is employed as a proxy for ventricular relaxation. A metric is derived from these proxy values to represent diastolic function. The metric is tracked over time to evaluate changes in diastolic function. In other examples, specific values for ventricular compliance and ventricular relaxation are derived for the patient based on the T-wave evoked response parameters.

    摘要翻译: 使用起搏器或其他可植入医疗器械在患者体内监测舒张功能。 在一个示例中,可植入装置使用从T波诱发反应波形导出的形态参数作为心室松弛率和心室顺应性的代理。 特别地,T波诱发反应的峰值的大小被用作心室顺应性的代表。 其峰值后的T波诱发反应的最大压摆率被用作心室松弛的代用品。 来自这些代理值的度量来表示舒张功能。 随着时间的推移跟踪度量以评估舒张功能的变化。 在其他实例中,基于T波诱发反应参数为患者导出心室顺应性和心室松弛的具体值。

    Method and apparatus for pre-processing scans as a preparation for segmenting the same
    50.
    发明申请
    Method and apparatus for pre-processing scans as a preparation for segmenting the same 有权
    用于预处理扫描的方法和装置作为分割扫描的准备

    公开(公告)号:US20080144959A1

    公开(公告)日:2008-06-19

    申请号:US11488802

    申请日:2006-07-18

    IPC分类号: G06K9/40

    CPC分类号: G06T5/004

    摘要: A computer-implemented method for pre-processing image data of a three-dimensional volume includes providing the image data of a vessel, applying a super-sampling filter to the image data to generate super-sampled image data having an increased resolution as compared to the image data, applying an unsharp masking filter to the super-sampled image data for increasing contrast of an edge of the vessel, applying a de-noising filer for removing noise surrounding the edge after applying the unsharp masking filter, and storing the image data after applying the de-noising filter thereto.

    摘要翻译: 用于预处理三维体积图像数据的计算机实现方法包括提供容器的图像数据,对图像数据应用超采样滤波器以产生具有增加的分辨率的超采样图像数据,与 将所述图像数据应用于所述超采样图像数据,以增加所述容器的边缘的对比度;对所述图像数据应用所述图像数据之后,应用去噪滤光器以除去所述边缘周围的噪声;以及存储所述图像数据 在其上应用去噪滤波器之后。