公开(公告)号：US5404880A

公开(公告)日：1995-04-11

申请号：US131648

申请日：1993-10-05

申请人： Robert D. Throne

发明人： Robert D. Throne

IPC分类号： A61N1/39 ,  G06F17/00 ,  A61B5/04

CPC分类号： A61B5/0464 ,  A61N1/3956

摘要： A computationally efficient two channel scatter diagram analysis algorithm for distinguishing monomorphic ventricular tachycardia (VT) from polymorphic ventricular tachycardia and ventricular fibrillation (VF). Scatter diagram analysis plots the amplitude from one channel (morphology) versus the amplitude from another channel (rate) on a graph with a fifteen-by-fifteen grid. A fraction or percentage of the 225 grid blocks occupied by at least one sample point is then determined. Monomorphic VT traces nearly the same path in space and occupies a smaller percentage of the graph than a non-regular rhythm such as polymorphic VT or VF.

摘要翻译： 一种用于区分单态室性心动过速（VT）与多发性室性心动过速和室颤（VF）的计算有效的双通道散点图分析算法。 分散图分析绘制了一个通道（形态）的振幅与另一个通道（速率）的振幅在十五分之一十五格的图上。 然后确定由至少一个采样点占据的225个网格块的一部分或百分比。 单态VT在空间中跟踪几乎相同的路径，并且占据图形的比例小于非规则节奏（例如多态VT或VF）的较小百分比。

公开(公告)号：US5000189A

公开(公告)日：1991-03-19

申请号：US437079

申请日：1989-11-15

申请人： Robert D. Throne ,  Janice M. Jenkins ,  Lorenzo A. DiCarlo

发明人： Robert D. Throne ,  Janice M. Jenkins ,  Lorenzo A. DiCarlo

IPC分类号： A61B5/0452 ,  A61N1/362 ,  G06F17/00

CPC分类号： A61B5/04525 ,  A61B5/7239 ,  A61N1/3621

摘要： A method and system are provided for monitoring electrocardiographic signals and detecting a pathological cardiac arrhythmia, such as ventricular tachycardia wherein the zero crossings of the first derivative of a reference template (i.e. reference waveform) are utilized to separate or partition both the template and each subsequent electrocardiographic signal being monitored into first and second sets of identifiable partitions. Each zero crossing is a boundary between adjacent partitions. Initially, the reference template is generated by acquiring a first set of wavefrom data representing a known good electrocardiographic signal. Identifiable partitions of the first set of data are then matched with corresponding identifiable partitions of the second set of data to obtain a performance measure signal. In one embodiment, the area beneath the derivative in each partition of the analyzed waveform is computed and compared (i.e. matched) to the corresponding area of the template. Preferably, a plurality of electrocardiographic signals are analyzed by utilizing the template and a plurality of performance measure signals are obtained. Finally, a therapy signal is provided as a function of the plurality of performance measure signals in the event of a pathologica cardiac arrhythmia, such as ventricular tachycardia.

摘要翻译： 提供了一种方法和系统，用于监测心电图信号并检测病理性心律失常，例如室性心动过速，其中参考模板的一阶导数（即参考波形）的过零点用于分离或分隔模板和每个随后的 监测心电图信号到第一组和第二组可识别分区。 每个过零点是相邻分区之间的边界。 最初，通过获取表示已知良好的心电图信号的第一组波形数据来生成参考模板。 然后将第一组数据的可识别分区与第二组数据的相应的可识别分区进行匹配以获得性能测量信号。 在一个实施例中，计算分析波形的每个分区中的导数下面的区域，并将其与模板的相应区域进行比较（即匹配）。 优选地，通过利用模板来分析多个心电图信号，并且获得多个性能测量信号。 最后，在发生病态心律失常（例如室性心动过速）的情况下，提供治疗信号作为多个性能测量信号的函数。