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    THRESHOLD ADJUSTMENT SCHEMES FOR ACUTE ISCHEMIA DETECTION
    1.
    发明申请
    THRESHOLD ADJUSTMENT SCHEMES FOR ACUTE ISCHEMIA DETECTION 有权
    用于急性脑缺血发作检测的阈值调整方案

    公开(公告)号：US20120053478A1

    公开(公告)日：2012-03-01

    申请号：US12914536

    申请日：2010-10-28

    申请人： STEVEN R. JOHNSON ,  BRUCE HOPENFELD

    发明人： STEVEN R. JOHNSON ,  BRUCE HOPENFELD

    IPC分类号： A61B5/0452

    CPC分类号： A61B5/0006 ,  A61B5/0031 ,  A61B5/0452 ,  A61B5/0468 ,  A61B2560/0204 ,  A61B2560/0219

    摘要： A heart monitor is disclosed. The monitor computes ST segment deviations and stores the results in heart rate based histograms. Periodically, the monitor analyzes the histogram data to determine heart rate dependent acute ischemia detection thresholds. If the statistical distribution associated with a heart rate range is insufficient, the threshold for that heart rate range is set as a function of the threshold for a neighboring heart rate range. Thresholds are also increased for heart rate ranges associated with statistical distributions that are sufficient but that have a relatively small number of entries.

    摘要翻译： 公开了心脏监护仪。 监视器计算ST段偏差，并将结果存储在基于心率的直方图中。 定期监测分析直方图数据以确定心率依赖急性缺血检测阈值。 如果与心率范围相关联的统计分布不足，则将心率范围的阈值设置为相邻心率范围的阈值的函数。 对于足够但具有相对较少数量条目的统计分布相关的心率范围，阈值也增加。

    SYSTEM AND METHODS FOR THE SELECTIVE UPDATING OF HEART SIGNAL PARAMETER TIME SERIES
    2.
    发明申请
    SYSTEM AND METHODS FOR THE SELECTIVE UPDATING OF HEART SIGNAL PARAMETER TIME SERIES 有权
    用于选择性更新心脏信号参数时间序列的系统和方法

    公开(公告)号：US20100241017A1

    公开(公告)日：2010-09-23

    申请号：US12702777

    申请日：2010-02-09

    申请人： STEVEN R. JOHNSON ,  BRUCE HOPENFELD

    发明人： STEVEN R. JOHNSON ,  BRUCE HOPENFELD

    IPC分类号： A61B5/0472

    CPC分类号： A61B5/0468 ,  A61B5/0456 ,  A61B5/0472

    摘要： A heart rate monitor is disclosed. The monitor generates an ST deviation time series by employing a recursive filter that is preferably an exponential average filter whose output is a weighted sum of the then existing ST time series value and current ST deviation values of analyzable beats, seats are detected in segments of data. ST deviation is measured for analyzable beats. The ST deviation time series is updated only if certain criteria are met. A first criterion for updating the time series is that at least half of the beats within a segment must be normal sinus rhythm beats: A second criterion for updating the time series is that (i) the average RR interval of the segment is between ¾ and 1.5 times the average RR interval of the previous segment; or (ii) both (a) the number of abnormal beats in the current segment is less than 2, and (b) the number of premature ventricular contractions within the current segment is less than 2.

    摘要翻译： 公开了一种心率监测器。 监视器通过采用递归滤波器产生ST偏差时间序列，该递归滤波器优选地是指数平均滤波器，其输出是当时存在的ST时间序列值和可分析节拍的当前ST偏差值的加权和，在数据段中检测到座位 。 对可分析节拍测量ST偏差。 仅当符合某些标准时才更新ST偏差时间序列。 更新时间序列的第一个标准是片段中至少一半的节拍必须是正常的窦性心律拍子：用于更新时间序列的第二个标准是（i）片段的平均RR间隔在¾和 前一段的平均RR间隔的1.5倍; 或（ii）（a）当前段的异常搏动次数小于2，（b）当前段内过早心室收缩数小于2。

    PARAMETER VALUE REJECTION FOR A CARDIAC MONITOR
    3.
    发明申请
    PARAMETER VALUE REJECTION FOR A CARDIAC MONITOR 有权
    CARDIAC监视器的参数值拒绝

    公开(公告)号：US20120053473A1

    公开(公告)日：2012-03-01

    申请号：US12914548

    申请日：2010-10-28

    申请人： STEVEN R. JOHNSON ,  BRUCE HOPENFELD

    发明人： STEVEN R. JOHNSON ,  BRUCE HOPENFELD

    IPC分类号： A61B5/0452

    CPC分类号： A61B5/02028 ,  A61B5/0006 ,  A61B5/0022 ,  A61B5/02405 ,  A61B5/04012 ,  A61B5/0452 ,  A61B5/686 ,  A61B5/7282 ,  A61B5/742 ,  A61B5/746 ,  A61B5/7465

    摘要： A heart monitor is disclosed. The monitor computes ST segment deviations and stores the results in heart rate based histograms. Periodically, the monitor analyzes the histogram data to determine a median value of ST deviation. Subsequently, beats are excluded from the computation of the time series if their ST deviations both varies too far from the long term median value and varies too far from the then current time series value.

    摘要翻译： 公开了心脏监护仪。 监视器计算ST段偏差，并将结果存储在基于心率的直方图中。 周期性地，监视器分析直方图数据以确定ST偏差的中值。 随后，如果它们的ST偏差都与长期中值变化太远，并且与当前时间序列值变得太远，则不计算时间序列的节拍。

    IMPLANTABLE CARDIAC EVENT DETECTION DEVICE WITH AN ADAPTIVE SLEEP STATE
    4.
    发明申请
    IMPLANTABLE CARDIAC EVENT DETECTION DEVICE WITH AN ADAPTIVE SLEEP STATE 有权
    具有自适应睡眠状态的可植入心脏事件检测装置

    公开(公告)号：US20110270101A1

    公开(公告)日：2011-11-03

    申请号：US13177685

    申请日：2011-07-07

    申请人： DAVID R. FISCHELL ,  JONATHAN HARWOOD ,  ROBERT E. FISCHELL ,  STEVEN R. JOHNSON

    发明人： DAVID R. FISCHELL ,  JONATHAN HARWOOD ,  ROBERT E. FISCHELL ,  STEVEN R. JOHNSON

    IPC分类号： A61B5/04

    CPC分类号： A61B5/02455 ,  A61B5/0031 ,  A61B5/04012 ,  A61B5/0422 ,  A61B5/0452 ,  A61B5/0456 ,  A61B5/0468 ,  A61B5/0472 ,  A61B5/746 ,  A61B5/7465 ,  A61B2560/0209

    摘要： Disclosed is a system for the detection of cardiac events (a guardian system) that includes an implanted device called a cardiosaver, a physician's programmer and an external alarm system. The system is designed to provide early detection of cardiac events such as acute myocardial infarction or exercise induced myocardial ischemia caused by an increased heart rate or exertion. The system can also alert the patient with a less urgent alarm if a heart arrhythmia is detected. Using one or more detection algorithms, the cardiosaver can detect a change in the patient's electrogram that is indicative of a cardiac event within five minutes after it occurs and then automatically warn the patient that the event is occurring. To provide this warning, the guardian system includes an internal alarm sub-system (internal alarm means) within the cardiosaver and/or an external alarm system (external alarm means). If the guardian system is put into a pacemaker, the algorithm can utilize a different analysis of the electrogram depending on whether or not the pacemaker is actually pacing the heart.

    摘要翻译： 公开了一种用于检测心脏事件（监护系统）的系统，其包括称为心脏切除器的植入装置，医师编程器和外部警报系统。 该系统旨在提供心脏事件的早期检测，例如由心率增加或运动引起的急性心肌梗死或运动诱发的心肌缺血。 如果检测到心律失常，该系统还可以警告患者不太紧急的警报。 使用一个或多个检测算法，心脏扫描器可以检测患者的电描记图中的变化，其指示在发生后五分钟内的心脏事件，然后自动向患者发出事件发生。 为了提供此警告，监护系统包括在心脏保护器内和/或外部报警系统（外部报警装置）内的内部报警子系统（内部报警装置）。 如果将监护人系统放入心脏起搏器，该算法可以根据起搏器是否实际起搏心脏，对电图进行不同的分析。

    BASELINE PROCESSING FOR THE DETECTION OF CARDIAC EVENTS
    5.
    发明申请
    BASELINE PROCESSING FOR THE DETECTION OF CARDIAC EVENTS 有权
    用于检测心脏事件的基线加工

    公开(公告)号：US20090171228A1

    公开(公告)日：2009-07-02

    申请号：US12367155

    申请日：2009-02-06

    申请人： DAVID R. FISCHELL ,  JONATHAN HARWOOD ,  STEVEN R. JOHNSON ,  DAVID KEENAN

    发明人： DAVID R. FISCHELL ,  JONATHAN HARWOOD ,  STEVEN R. JOHNSON ,  DAVID KEENAN

    IPC分类号： A61B5/0452

    CPC分类号： A61B5/02455 ,  A61B5/0031 ,  A61B5/04012 ,  A61B5/0422 ,  A61B5/0452 ,  A61B5/0456 ,  A61B5/0468 ,  A61B5/0472 ,  A61B5/746 ,  A61B5/7465 ,  A61B2560/0209

    摘要： A system for the detection of cardiac events occurring in a human patient is provided. At least two electrodes are included in the system for obtaining an electrical signal from a patient's heart. An electrical signal processor is electrically coupled to the electrodes for processing the electrical signal and a patient alarm means is further provided and electrically coupled to the electrical signal processor. The electrical signal is acquired in the form of electrogram segments, which are categorized according to heart rate, ST segment shift and type heart rhythm (normal or abnormal). Baseline electrogram segments are tracked over time.

    摘要翻译： 提供了一种用于检测在人类患者中发生的心脏事件的系统。 系统中包括至少两个电极，以从患者的心脏获得电信号。 电信号处理器电耦合到电极以处理电信号，并且还提供患者报警装置并电耦合到电信号处理器。 电信号是以心律，ST段移位和心律（正常或异常）分为心电图段的形式获得的。 基线电描绘片段随时间跟踪。