Method and apparatus for monitoring tissue fluid content for use in an implantable cardiac device
    34.
    发明授权
    Method and apparatus for monitoring tissue fluid content for use in an implantable cardiac device 有权
    用于监测可植入心脏装置中使用的组织液含量的方法和装置

    公开(公告)号:US08428717B2

    公开(公告)日:2013-04-23

    申请号:US10684759

    申请日:2003-10-14

    IPC分类号: A61N1/365

    摘要: A fluid status monitoring system for use in implantable cardiac stimulation or monitoring devices is provided for monitoring changes in thoracic fluid content. A fluid status monitor includes excitation pulse generating and control circuitry, and voltage and current measurement and control circuitry for performing a series of cardiac-gated, intra-thoracic impedance measurements. The cardiac-gated measurements are filtered or time-averaged to provide a fluid status impedance value, with respiratory noise removed. Based on comparative analysis of the fluid status impedance value, a clinically relevant trend in fluid status may be tentatively diagnosed and a fluid status response provided. Cross-check intra-thoracic impedance measurements performed using the same or a different excitation pathway and a different measurement pathway than the primary intra-thoracic impedance measurement configuration may be used to verify a tentative diagnosis.

    摘要翻译: 提供用于植入式心脏刺激或监测装置的流体状态监测系统,用于监测胸腔液含量的变化。 流体状态监测器包括激励脉冲发生和控制电路以及用于执行一系列心脏门控胸腔内阻抗测量的电压和电流测量和控制电路。 心脏门控测量被过滤或时间平均以提供流体状态阻抗值,消除呼吸噪声。 基于流体状态阻抗值的比较分析,可以暂时诊断流体状态的临床相关趋势,并提供流体状态响应。 使用与主要的胸内阻抗测量配置相同或不同的激发途径和不同的测量路径进行的交叉检查胸内阻抗测量可用于验证临时诊断。

    THERAPY CONTROL BASED ON NIGHTTIME CARDIOVASCULAR PRESSURE
    35.
    发明申请
    THERAPY CONTROL BASED ON NIGHTTIME CARDIOVASCULAR PRESSURE 审中-公开
    基于新生血管压力的治疗控制

    公开(公告)号:US20130085399A1

    公开(公告)日:2013-04-04

    申请号:US13250092

    申请日:2011-09-30

    摘要: Techniques for controlling therapy based on a physiological parameter indicative of ventricular filling pressure, such as various cardiovascular pressures, are described. One or more values of the physiological parameter that are collected during nighttime, or while the patient is otherwise asleep, inactive, or within a recumbent position, may be compared to one or more values of the physiological parameter collected during daytime, or while the patient is otherwise awake, active and/or upright. A therapy, such as for treating physiological factors that may lead to worsening HF, may be initiated or adjusted based on the comparison, e.g., if the nighttime values exceed the daytime values.

    摘要翻译: 描述了基于指示心室充盈压的生理参数(例如各种心血管压力)来控制治疗的技术。 可以将在夜间或患者其他睡眠,不活动或处于躺卧位置期间收集的生理参数的一个或多个值与在白天收集的生理参数的一个或多个值进行比较, 否则清醒,活跃和/或直立。 可以基于比较(例如,如果夜间值超过白天值)来开始或调整治疗,例如用于治疗可能导致恶化HF的生理因素的治疗。

    Methods of identifying and/or assessing cardiac arrhythmias using an implantable medical device
    38.
    发明授权
    Methods of identifying and/or assessing cardiac arrhythmias using an implantable medical device 有权
    使用可植入医疗装置识别和/或评估心律失常的方法

    公开(公告)号:US07937137B2

    公开(公告)日:2011-05-03

    申请号:US11342397

    申请日:2006-01-30

    IPC分类号: A61B5/0452

    摘要: Apparatus using one or more modes of statistical analysis with one or more monitored parameters of a patient's heart to identify and/or assess arrhythmias. Through use of the one or more modes of statistical analysis, a medical professional can be aided during evaluation of patient data for diagnosis of the patient. At least one of the monitored parameters may include one or more values used representatively for storage intervals of a selected length. As such, for each storage interval, a value may be determined for the one monitored parameter occurring at an upper percentile and a lower percentile. In addition, a median value may be determined for the one monitored parameter for each storage interval. Over a plurality of the storage intervals, these determined values can be used in one or more modes of statistical analysis to better identify and assess the arrhythmias.

    摘要翻译: 一种使用一种或多种统计分析模式的患者心脏的一个或多个监测参数来识别和/或评估心律失常的装置。 通过使用一种或多种统计分析模式,可以在评估用于患者诊断的患者数据时辅助医学专业人员。 所监视的参数中的至少一个可以包括代表性地用于所选长度的存储间隔的一个或多个值。 因此,对于每个存储间隔,可以针对在上百分位数和下百分位数处发生的一个监视参数来确定值。 此外,可以针对每个存储间隔的一个被监视的参数确定中值。 在多个存储间隔中,这些确定的值可以用于一种或多种统计分析模式,以更好地识别和评估心律失常。

    Implantable medical device with electromechanical delay measurement for lead position and ventricular
    39.
    发明授权
    Implantable medical device with electromechanical delay measurement for lead position and ventricular 有权
    可植入医疗器械,具有引导位置和心室的机电延迟测量

    公开(公告)号:US07873410B2

    公开(公告)日:2011-01-18

    申请号:US11380350

    申请日:2006-04-26

    IPC分类号: A61B5/02 A61N1/04

    摘要: The cardiac rhythm management system includes an implantable medical device (IMD) with leads carrying electrodes for sensing cardiac electrical activity, and a physiologic sensor for sensing cardiac mechanical activity. The IMD measures electromechanical delays between electrical activity sensed by the electrodes and mechanical activity sensed by the physiologic sensor. The measured electromechanical delays can be used to detect lead dislodgement and to assess dyssynchrony between two areas of the heart, such as the right ventricle and the left ventricle.

    摘要翻译: 心律管理系统包括具有承载用于感测心脏电活动的电极的引线的可植入医疗装置(IMD)和用于感测心脏机械活动的生理传感器。 IMD测量由电极感测的电活动和生理传感器感测到的机械活动之间的机电延迟。 测量的机电延迟可用于检测引线移动并评估心脏两个区域之间的不同步,例如右心室和左心室。