STATISTICAL METHOD FOR ASSESSING AUTONOMIC BALANCE
    11.
    发明申请
    STATISTICAL METHOD FOR ASSESSING AUTONOMIC BALANCE 有权
    用于评估自动平衡的统计方法

    公开(公告)号:US20060195038A1

    公开(公告)日:2006-08-31

    申请号:US11382568

    申请日:2006-05-10

    IPC分类号: A61B5/0402

    摘要: A computationally efficient method for assessing a subject's autonomic balance by measurement of heart rate variability is disclosed which is particularly suitable for implementation by an implantable medical device. Statistical surrogates are used to represent frequency components of an RR time series. A ratio of the low frequency component to the high frequency component may then be estimated to assess the subject's autonomic balance.

    摘要翻译: 公开了一种通过测量心率变异性来评估受试者的自主平衡的计算上有效的方法,其特别适用于可植入医疗装置的实现。 统计代理用于表示RR时间序列的频率分量。 然后可以估计低频分量与高频分量的比率以评估受试者的自主平衡。

    Classifying tachyarrhythmia using time interval between ventricular depolarization and mitral valve closure
    12.
    发明申请
    Classifying tachyarrhythmia using time interval between ventricular depolarization and mitral valve closure 有权
    使用心室去极化和二尖瓣关闭之间的时间间隔来分类快速性心律失常

    公开(公告)号:US20050010257A1

    公开(公告)日:2005-01-13

    申请号:US10618261

    申请日:2003-07-11

    摘要: A cardiac rhythm management system measures a time interval between a first fiducial marker indicative of a ventricular depolarization (e.g., a Q-wave, an R-wave, etc.) and a second fiducial marker indicative of a subsequent mitral valve closure (MVC) occurring during the same cardiac cycle. Such time intervals are used for detecting atrioventricular (AV) dissociation. The AV dissociation may, in turn, be used for discriminating between a supraventricular tachyarrhythmia (SVT) and a ventricular tachyarrhythmia (VT) or for any other diagnostic or therapeutic purpose. The AV dissociation and/or SVT/VT discrimination information may be communicated from an implantable cardiac rhythm management device to an external interface and/or used to determine the nature of therapy delivered to the subject. In a further example, amplitudes indicative of the MVCs are also used for determining whether AV dissociation exists.

    摘要翻译: 心律管理系统测量指示心室去极化(例如,Q波,R波等)的第一基准标记与指示随后的二尖瓣关闭(MVC)的第二基准标记之间的时间间隔, 发生在同一心脏周期。 这样的时间间隔用于检测房室(AV)解离。 AV解离反过来可用于区分室上性快速性心律失常(SVT)和室性快速性心律失常(VT)或任何其他诊断或治疗目的。 AV解离和/或SVT / VT鉴别信息可以从可植入心律管理装置传递到外部界面和/或用于确定递送给对象的治疗的性质。 在另一示例中,指示MVC的幅度也用于确定AV解离是否存在。

    Method and apparatus for controlling anti-tachyarrhythmia pacing using hemodynamic sensor
    13.
    发明申请
    Method and apparatus for controlling anti-tachyarrhythmia pacing using hemodynamic sensor 有权
    使用血液动力学传感器控制抗心律失调起搏的方法和装置

    公开(公告)号:US20070142866A1

    公开(公告)日:2007-06-21

    申请号:US11312082

    申请日:2005-12-20

    IPC分类号: A61N1/365

    CPC分类号: A61N1/3622 A61N1/36514

    摘要: A cardiac rhythm management (CRM) system includes an implantable medical device that delivers anti-tachyarrhythmia therapies including anti-tachyarrhythmia pacing (ATP) and at least one hemodynamic sensor that senses a hemodynamic signal. When a tachyarrhythmia episode is detected, the CRM system analyzes the hemodynamic signal to determine whether and/or when to deliver an ATP. In one embodiment, a hemodynamic parameter extracted from the hemodynamic signal is used to predict the potential effective of ATP in terminating the detected tachyarrhythmia episode. In another embodiment, a characteristic feature detected from the hemodynamic signal is used to determine an ATP window during which a delivery of ATP is initiated.

    摘要翻译: 心律管理(CRM)系统包括可植入的医疗装置,其传递抗慢性心律失常疗法,包括抗快速性心律失常起搏(ATP)和至少一种感测血液动力学信号的血液动力学传感器。 当检测到快速性心律失常发作时,CRM系统分析血液动力学信号,以确定是否和/或何时递送ATP。 在一个实施例中,使用从血液动力学信号提取的血液动力学参数来预测ATP在终止检测到的快速性心律失常发作中的潜在有效性。 在另一个实施例中,使用从血液动力学信号检测到的特征特征来确定在其中开始ATP递送的ATP窗口。

    Evaluating a patient condition using autonomic balance information in implatable cardiac devices
    14.
    发明申请
    Evaluating a patient condition using autonomic balance information in implatable cardiac devices 有权
    使用植入式心脏装置中的自主平衡信息评估患者状况

    公开(公告)号:US20060293604A1

    公开(公告)日:2006-12-28

    申请号:US11168614

    申请日:2005-06-28

    IPC分类号: A61B5/04

    摘要: Systems and methods for evaluating a patient condition using autonomic balance information involve providing an implantable cardiac device that acquires a cardiac waveform from a patient. One or more characteristics associated with autonomic balance of the patient are detected and used to evaluate a patient condition, such as sleep onset, sleep stage, cardiac vulnerability over a predetermined duration, and sleep disordered breathing. Patient activity levels may be sensed and used to evaluate the patient's condition, such as for determining a level of systemic stress. Characteristics associated with the autonomic balance include calculating an LF/HF ratio waveform and/or determining one or more morphological features of the LF/HF ratio waveform. Coordination with a patient-external device may facilitate transmission of information about one or more of the cardiac waveform, the one or more characteristics associated with the autonomic balance, and a marked cardiac waveform.

    摘要翻译: 使用自主平衡信息评估患者状况的系统和方法涉及提供从患者获取心脏波形的可植入心脏装置。 检测与患者的自主平衡相关联的一个或多个特征,并用于评估患者状况,例如睡眠发作,睡眠阶段,预定持续时间内的心脏易感性和睡眠呼吸障碍。 可以感测患者活动水平并用于评估患者的状况,例如用于确定全身应激水平。 与自主平衡相关的特征包括计算LF / HF比率波形和/或确定LF / HF比波形的一个或多个形态特征。 与患者外部设备的协调可以促进关于心脏波形中的一个或多个的信息的传输,与自主平衡相关联的一个或多个特征以及标记的心脏波形。

    Method and apparatus for using heart rate variability as a safety check in electrical therapies
    15.
    发明申请
    Method and apparatus for using heart rate variability as a safety check in electrical therapies 失效
    使用心率变异性作为电疗法安全检查的方法和装置

    公开(公告)号:US20060161209A1

    公开(公告)日:2006-07-20

    申请号:US11037309

    申请日:2005-01-18

    IPC分类号: A61N1/362

    CPC分类号: A61N1/365 A61N1/36592

    摘要: A cardiac rhythm management system modulates the delivery of pacing and/or autonomic neurostimulation pulses based on heart rate variability (HRV). An HRV parameter being a measure of the HRV is produced to indicate a patient's cardiac condition, based on which the delivery of pacing and/or autonomic neurostimulation pulses is started, stopped, adjusted, or optimized. In one embodiment, the HRV parameter is used as a safety check to stop an electrical therapy when it is believed to be potentially harmful to continue the therapy.

    摘要翻译: 心律管理系统基于心率变异性(HRV)调节起搏和/或自主神经刺激脉冲的传递。 产生作为HRV的量度的HRV参数以指示患者的心脏状况,基于该HRV参数开始,停止,调整或优化起搏和/或自主神经刺激脉冲的递送。 在一个实施例中,当HRV参数被认为对继续治疗有潜在危害时,将HRV参数用作安全检查以停止电疗法。

    Third heart sound activity index for heart failure monitoring
    16.
    发明申请
    Third heart sound activity index for heart failure monitoring 有权
    心力衰竭监测的第三心音活动指数

    公开(公告)号:US20050149136A1

    公开(公告)日:2005-07-07

    申请号:US10746874

    申请日:2003-12-24

    IPC分类号: A61B7/04 A61N1/365 A61N1/37

    摘要: A cardiac rhythm management system provides for the trending of a third heart sound (S3) index. The S3 index is a ratio, or an estimate of the ratio, of the number of S3 beats to the number of all heart beats, where the S3 beats are each a heart beat during which an occurrence of S3 is detected. An implantable sensor such as an accelerometer or a microphone senses an acoustic signal indicative heart sounds including S3. An S3 detector detects occurrences of S3 from the acoustic signal. A heart sound processing system trends the S3 index on a periodic basis to allow continuous monitoring of the S3 activity level, which is indicative of conditions related to heart failure.

    摘要翻译: 心律管理系统提供第三心音(S3)指数的趋势。 S3指数是S3跳动次数与所有心跳次数的比率或比率的估计,其中S3跳动各自是检测到S3的发生的心跳。 诸如加速度计或麦克风的可植入传感器感测到包括S3的指示心音的声信号。 S3检测器从声信号检测出S3的发生。 心脏声音处理系统周期性地推动S3指数,以允许连续监测S3活动水平,这表明与心力衰竭有关的病症。

    Tracking progression of congestive heart failure via a force-frequency relationship
    17.
    发明申请
    Tracking progression of congestive heart failure via a force-frequency relationship 有权
    通过力 - 频率关系跟踪充血性心力衰竭的进展

    公开(公告)号:US20070043299A1

    公开(公告)日:2007-02-22

    申请号:US11208281

    申请日:2005-08-19

    IPC分类号: A61B5/04

    摘要: A system, method, or device monitor a force-frequency relationship exhibited by a patient's heart. A contractility characteristic, such as a heart sound characteristic of an S1 heart sound, is measured. The contractility characteristic indicates the forcefulness of a contraction of the heart. The frequency at which the heart is contracting is determined. A group of (contractility characteristic, heart rate) pairs is stored in a memory device. The group of pairs defines a force-frequency relationship for the heart. The method may be implemented by an implantable device, or by a system including a implantable device.

    摘要翻译: 系统,方法或设备监测患者心脏展示的力 - 频率关系。 测量S1心音的心音特征的收缩特性。 收缩性特征表明心脏收缩的强度。 确定心脏收缩的频率。 一组(收缩特性,心率)对存储在存储器件中。 一组对定义了心脏的力 - 频率关系。 该方法可以由可植入装置或包括可植入装置的系统来实现。

    Managing preload reserve by tracking the ventricular operating point with heart sounds
    18.
    发明申请
    Managing preload reserve by tracking the ventricular operating point with heart sounds 有权
    通过用心脏声音跟踪心室手术点来管理预负荷储备

    公开(公告)号:US20070027400A1

    公开(公告)日:2007-02-01

    申请号:US11189462

    申请日:2005-07-26

    IPC分类号: A61B5/02

    摘要: A system and method for managing preload reserve and tracking the inotropic state of a patient's heart. The S1 heart sound is measured as a proxy for direct measurement of stroke volume. The S3 heart sound may be measured as a proxy for direct measurement of preload level. The S1-S3 pair yield a point on a Frank Starling type of curve, and reveal information regarding the patient's ventricular operating point and inotropic state. As an alternative, or in addition to, measurement of the S3 heart sound, the S4 heart sound may be measured or a direct pressure measurement may be made for the sake of determining the patient's preload level. The aforementioned measurements may be made by a cardiac rhythm management device, such as a pacemaker or implantable defibrillator.

    摘要翻译: 一种用于管理预负荷储备并跟踪患者心脏的变力状态的系统和方法。 测量S1心音作为直接测量行程体积的代理。 可以将S3心音测量为用于直接测量预载水平的代理。 S1-S3对在Frank Starling曲线上产生一个点,并显示关于患者的心室手术点和变力状态的信息。 作为S3心音的测量或除了测量S3心音之外,也可以测量S4心音,或者为了确定患者的预压水平可以进行直接的压力测量。 上述测量可以由诸如起搏器或可植入除颤器的心律管理装置进行。

    Method and apparatus for third heart sound detection
    19.
    发明申请
    Method and apparatus for third heart sound detection 有权
    第三心音检测方法及装置

    公开(公告)号:US20050148896A1

    公开(公告)日:2005-07-07

    申请号:US10746853

    申请日:2003-12-24

    IPC分类号: A61B7/04 A61B5/02

    CPC分类号: A61B7/04

    摘要: A cardiac rhythm management system includes a heart sound detector providing for detection of the third heart sounds (S3). An implantable sensor such as an accelerometer or a microphone senses an acoustic signal indicative heart sounds including the second heart sounds (S2) and S3. The heart sound detector detects occurrences of S2 and starts S3 detection windows each after a predetermined delay after a detected occurrence of S2. The occurrences of S3 are then detected from the acoustic signal within the S3 detection windows.

    摘要翻译: 心律管理系统包括用于检测第三心音的心音检测器(S 3)。 诸如加速度计或麦克风的可植入传感器感测到指示包括第二心音(S 2)和S 3的心音的声信号。 心音检测器检测到S 2的发生,并且在检测到的S 2发生之后,在预定延迟之后开始S 3检测窗口。 然后从S 3检测窗口内的声信号检测出S 3的出现。

    METHOD AND APPARATUS FOR PHONOCARDIOGRAPHIC IMAGE ACQUISITION AND PRESENTATION
    20.
    发明申请
    METHOD AND APPARATUS FOR PHONOCARDIOGRAPHIC IMAGE ACQUISITION AND PRESENTATION 有权
    用于图像摄影和呈现的方法和装置

    公开(公告)号:US20080015653A1

    公开(公告)日:2008-01-17

    申请号:US11780405

    申请日:2007-07-19

    IPC分类号: A61N1/365

    摘要: A cardiac rhythm management system provides a phonocardiographic image indicative of a heart's mechanical events related to hemodynamic performance. The phonocardiographic image includes a stack of acoustic sensor signal segments representing multiple cardiac cycles. Each acoustic sensor signal segment includes heart sounds indicative of the heart's mechanical events and representations of the heart's electrical events. The stack of acoustic sensor signal segments are aligned by a selected type of the heart's mechanical or electrical events and are grouped by a cardiac timing parameter for presentation.

    摘要翻译: 心律管理系统提供指示与血液动力学性能相关的心脏的机械事件的心音图像。 心音图像包括表示多个心动周期的一组声传感器信号段。 每个声学传感器信号段包括指示心脏的机械事件和心脏电气事件的表示的心脏声音。 声学传感器信号段的堆叠通过所选择的心脏的机械或电气事件的类型对准,并且通过心脏定时参数分组以进行呈现。