公开(公告)号：US06416473B1

公开(公告)日：2002-07-09

申请号：US09592955

申请日：2000-06-13

申请人： Marcelo R. Risk ,  Alan M. Cohen ,  Daniel T. Kaplan

发明人： Marcelo R. Risk ,  Alan M. Cohen ,  Daniel T. Kaplan

IPC分类号： A61B500

CPC分类号： G06F19/321 ,  A61B5/0205 ,  A61B5/0245 ,  A61B5/0456 ,  A61B5/08 ,  A61B5/4035 ,  G06F19/00 ,  G16H15/00 ,  G16H50/50

摘要： Methods and apparatus for providing a single, accurate indicator of a patient's autonomic nervous system function are described. The indicator is a combination of results of a plurality of different autonomic nervous system tests performed on the patient and referenced to a cross-sectional population. In one embodiment, the results of the different autonomic nervous system tests are referenced to a limited age group of the cross-sectional population. A method according to the invention includes generating a mathematical expression for each of the autonomic nervous system tests as a function of physiological data of the cross-sectional population, inserting measured physiological data of the patient into the mathematical expressions to compute output values for each of the tests, and combining the output values to provide the autonomic function indicator.

摘要翻译： 描述了提供患者自主神经系统功能的单一，准确指示符的方法和装置。 该指标是对患者执行的多个不同的自主神经系统测试的结果的组合，并且以横截面总体为参考。 在一个实施例中，不同的自主神经系统测试的结果参考横截面总体的有限年龄组。 根据本发明的方法包括为每个自主神经系统测试产生数学表达式作为横截面总体的生理数据的函数，将患者的测量生理数据插入到数学表达式中，以计算每个 测试，并结合输出值提供自主功能指标。

公开(公告)号：US5271411A

公开(公告)日：1993-12-21

申请号：US757307

申请日：1991-09-10

申请人： Kenneth L. Ripley ,  Daniel T. Kaplan

发明人： Kenneth L. Ripley ,  Daniel T. Kaplan

IPC分类号： A61B5/0472 ,  G06F17/00

CPC分类号： A61B5/0472

摘要： A method and apparatus for arrhythmia detection comprise steps and means for acquiring at least one continuous analog signal produced by an ECG system, producing at least one digital signal based on the analog signal, producing a plurality of scalar signals from the at least one digital signal, extracting features from the scalar signal, and plotting the extracted features in a feature space having a number of dimensions equal to the number of extracted features. A normal QRS complex is identified based on the population of QRS complexes located within clusters of QRS features within the feature space. Subsequent QRS complexes acquired after identification of the normal QRS complex are labeled based on a plurality of rules and the location of each subsequent QRS complex with respect to both prior and subsequent normal QRS complexes.

摘要翻译： 用于心律失常检测的方法和装置包括用于获取由ECG系统产生的至少一个连续模拟信号的步骤和装置，基于模拟信号产生至少一个数字信号，从至少一个数字信号产生多个标量信号 从所述标量信号中提取特征，以及将提取的特征绘制在具有等于所提取特征的数量的维数的特征空间中。 基于位于特征空间内的QRS特征集群内的QRS复合体的群体来识别正常的QRS复合物。 基于多个规则和相对于先前和随后的正常QRS复合物之后的每个后续QRS复合物的位置来标记正常QRS复合物识别后获得的随后的QRS复合物。

公开(公告)号：US4732157A

公开(公告)日：1988-03-22

申请号：US897602

申请日：1986-08-18

申请人： Daniel T. Kaplan ,  Richard J. Cohen

发明人： Daniel T. Kaplan ,  Richard J. Cohen

IPC分类号： A61B5/0452 ,  A61B5/08 ,  A61B5/087 ,  G06F17/00 ,  G01R23/02

CPC分类号： A61B5/044 ,  A61B5/02405 ,  A61B5/046 ,  A61B5/7275

摘要： Myocardial electrical stability is assessed by sampling an ECG waveform at corresponding fiducial locations for a plurality of beats and creating a scatter plot of the i.sup.th sample versus the (i- 1)th sample. A parameter .lambda. is determined which minimizes the sum of the total distances of the points of the scatter plot to an equation x(i)= 4.lambda.x(i- 1)[ 1-x(i- 1)]. The value of the parameter .lambda. is related to the electrical stability of the heart.

摘要翻译： 通过在多个拍子的相应基准位置采样ECG波形来评估心肌电稳定性，并创建第i个样本与第（i-1）个样本的散点图。 确定最小化散点图点的总距离与等式x（i）=4λx（i-1）[1-x（i-1）]的参数λ。 参数λ的值与心脏的电气稳定性有关。