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1. 发明授权

US06490478B1 System and method for complexity analysis-based cardiac tachyarrhythmia detection 有权
标题翻译：基于复杂性分析的心脏快速性心律失常检测系统与方法
公开(公告)号：US06490478B1
公开(公告)日：2002-12-03
申请号：US09669020
申请日：2000-09-25
申请人： Xu-Sheng Zhang , Dongping Lin
发明人： Xu-Sheng Zhang , Dongping Lin
IPC分类号： A61B50464
CPC分类号： A61N1/39 , A61N1/362 , A61N1/36514 , A61N1/395 , A61N1/3956
摘要： A system and method based on electrocardiogram (ECG) complexity analysis for real-time detecting shockable ventricular fibrillation (VF) and ventricular tachycardia (VT), and discriminating them from non-shockable tachyarrhythmia (e.g. supraventricular tachycardia (SVT) and atrial fibrillation (AF)) and high-frequency noise. In the disclosed invention, complexity measure CM (0 to 100), quantitatively characterizing the complexity nature of the non-linear dynamics underlying cardiac arrhythmia, is extracted from the sensed patient ECG signal using ECG complexity analysis. From the calculated complexity measure, by three thresholds (low complexity threshold (LCT), mediate complexity threshold (MCT), and high complexity threshold (HCT)), different kinds of tachyarrhythmia (i.e. heart rate (HR) above a preset rate threshold) and high-frequency noise are discriminated from each other: for non-shockable tachyarrhythmia, CM≦LCT; for VT, LCT
摘要翻译：一种基于心电图（ECG）复杂度分析的系统和方法，用于实时检测可震颤性心室颤动（VF）和室性心动过速（VT），并将其与不可震颤的快速性心律失常（例如室上性心动过速（SVT）和心房颤动（AF）））和高频噪声。在所公开的发明中，使用ECG复杂性分析从感测的患者ECG信号中提取定量表征心律不齐的非线性动力学的复杂性的复杂度测量CM（0至100）。从计算的复杂度测量中，通过三个阈值（低复杂度阈值（LCT），中介复杂度阈值（MCT）和高复杂度阈值（HCT）），不同种类的快速性心律失常（即高于预设速率阈值的心率（HR）），并且高频噪声彼此区分：对于不可震荡的快速性心律失常，CM <= LCT; 对于VT，LCT

2. 发明授权

US06480734B1 Cardiac arrhythmia detector using ECG waveform-factor and its irregularity 有权
标题翻译：心律失常检测器采用ECG波形因子及其不规则
公开(公告)号：US06480734B1
公开(公告)日：2002-11-12
申请号：US09609558
申请日：2000-06-30
申请人： Xu-Sheng Zhang , Dongping Lin
发明人： Xu-Sheng Zhang , Dongping Lin
IPC分类号： A61B504
CPC分类号： A61N1/39 , A61B5/046 , A61B5/0464 , A61N1/36514 , A61N1/3925 , A61N1/395 , A61N1/3956
摘要： A cardiac monitor is provided that monitors the condition of the heart of a cardiac patient and generates signals indicating one of several conditions, such as supraventricular tachycardia, ventricular tachycardia and ventricular fibrillation. In order to generate these signals, the ECG from the patient is analyzed to determine a cardiac interval and heart rate, as well as a waveform factor and a waveform factor irregularity. The waveform factor is derived from the average of the ECG amplitudes during a cardiac interval and the peak value of the ECG during the same interval. Preferably, a running average is calculated over several intervals. This waveform factor is then used to detect shockable ventricular arrhythmia. The waveform factor irregularity is indicative of the variability of the waveform factor and is used to differentiate between ventricular tachycardia and ventricular defibrillation.
摘要翻译：提供了一种监测心脏病患者心脏状态的心脏监测器，并产生指示若干情况之一的信号，例如室上性心动过速，室性心动过速和心室颤动。为了产生这些信号，分析来自患者的ECG以确定心脏间隔和心率，以及波形因子和波形因子不规则性。波形因子来自心脏间隔期间的ECG幅度的平均值，以及在相同间隔期间的ECG的峰值。优选地，在几个间隔上计算运行平均值。然后将该波形因子用于检测可震荡的室性心律失常。波形因子不规则表示波形因子的变异性，用于区分室性心动过速和心室除颤。

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