METHODS AND SYSTEMS FOR DETERMINING PACING PARAMETERS BASED ON REPOLARIZATION INDEX
    51.
    发明申请
    METHODS AND SYSTEMS FOR DETERMINING PACING PARAMETERS BASED ON REPOLARIZATION INDEX 审中-公开
    基于复合指数确定PAC参数的方法和系统

    公开(公告)号:US20130035738A1

    公开(公告)日:2013-02-07

    申请号:US13197665

    申请日:2011-08-03

    IPC分类号: A61N1/368

    CPC分类号: A61N1/3684 A61N1/36507

    摘要: Methods and systems are provided for determining pacing parameters for an implantable medical device (IMD). The methods and systems provide electrodes in the right atrium (RA), right ventricle (RV) and left ventricle (LV). The methods and systems sense RV cardiac signals and LV cardiac signals at an RV electrode and an LV electrode, respectively, over multiple cardiac cycles, to collect global activation information. The methods and systems identify a T-wave in the LV cardiac signal. The methods and systems calculate a repolarization index based at least in part on a timing of the T-wave identified in the LV cardiac signal. The methods and systems set at least one pacing parameter based on the repolarization index, wherein the at least one pacing parameter that is set represents at least one of an AV delay, an inter-ventricular interval and an intra-ventricular interval. Optionally, the methods and systems may deliver an RV pacing stimulus at the RV electrode such that the LV cardiac signal sensed thereafter includes the RV pacing stimulus followed by a T-wave. The methods and systems determine a waveform metric such as at least one of a QT interval, T-wave duration, and T-wave amplitude, and utilize the waveform metric to determine as the repolarization index.

    摘要翻译: 提供了用于确定可植入医疗装置(IMD)的起搏参数的方法和系统。 方法和系统在右心房(RA),右心室(RV)和左心室(LV)中提供电极。 方法和系统分别在多个心动周期上检测RV电极和LV电极上的RV心脏信号和LV心脏信号,以收集全局激活信息。 方法和系统识别LV心脏信号中的T波。 所述方法和系统至少部分地基于在LV心脏信号中识别的T波的定时来计算复极化指数。 方法和系统基于复极度指数设置至少一个起搏参数,其中设置的至少一个起搏参数表示AV延迟,心室间间隔和心室间间隔中的至少一个。 任选地,方法和系统可以在RV电极处递送RV起搏刺激,使得之后感测的LV心脏信号包括后跟T波的RV起搏刺激。 方法和系统确定诸如QT间期,T波持续时间和T波幅度中的至少一个的波形度量,并且利用波形度量来确定复极化指数。

    DETERMINATION OF CARDIAC RESYNCHRONIZATION THERAPY SETTINGS
    52.
    发明申请
    DETERMINATION OF CARDIAC RESYNCHRONIZATION THERAPY SETTINGS 有权
    心脏康复治疗方法的确定

    公开(公告)号:US20120310296A1

    公开(公告)日:2012-12-06

    申请号:US13471167

    申请日:2012-05-14

    IPC分类号: A61N1/365

    摘要: CRT settings for an implantable medical device are determined by applying pacing pulses to heart chambers of a scheme of different combinations of interchamber delays. A respective width parameter value representing an R or P wave width is determined for each such delay combination based on an ECG representing signal and the width parameter values are employed to estimate a parametric model defining the width parameter as a function of interchamber delays. Candidate interchamber delays that minimize the width parameter are determined from the parametric model and employed to determine optimal CRT settings. The technique provides an efficient way of finding optimal CRT settings when multiple pacing sites are available in a heart chamber.

    摘要翻译: 用于可植入医疗装置的CRT设置通过将不同组合的车间延迟的方案应用于心室来进行起搏脉冲来确定。 基于ECG表示信号为每个这样的延迟组合确定表示R或P波宽的相应宽度参数值,并且使用宽度参数值来估计定义作为间歇延迟的函数的宽度参数的参数模型。 从参数模型中确定最小化宽度参数的候选车间延迟,并用于确定最佳CRT设置。 该技术提供了一种在心室中可用多个起搏部位时可以找到最佳CRT设置的有效方式。

    PRE-EJECTION INTERVAL (PEI) MONITORING DEVICES, SYSTEMS AND METHODS
    53.
    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
    54.
    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。

    Method and apparatus for pre-processing scans by combining enhancement and denoising as a preparation for segmenting the same
    55.
    发明授权
    Method and apparatus for pre-processing scans by combining enhancement and denoising as a preparation for segmenting the same 有权
    通过组合增强和去噪作为分割扫描的准备来预处理扫描的方法和装置

    公开(公告)号:US07903850B2

    公开(公告)日:2011-03-08

    申请号:US11488802

    申请日:2006-07-18

    IPC分类号: G06K9/00

    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。