公开(公告)号：WO1981002832A1

公开(公告)日：1981-10-15

申请号：PCT/US1981000419

申请日：1981-03-31

Applicant: DATAMEDIX INC

Inventor： DATAMEDIX INC ,  MOUNT J ,  SINCLAIR J ,  PLUMMER D ,  DAVIS J ,  SCHELL J ,  BRUCE R ,  MITTNACHT D ,  MUIR M ,  JOHNSON R ,  SHAH A ,  SCHUETTPELZ K ,  EDWARDS C ,  POUMAKIS E ,  TRAXLER J

IPC: A61B05/04

CPC classification number: A61B5/0432

Abstract: A heartbeat analyzer includes and ambulatory unit (10) carried by the subject and having a microprocessor (24) controlling flow of data from the pickup leads (16, 18, 20) to the storage means (26) for up to 72 hours accumulation of data and analyzes the data with respect to rate rhythm and shape. An interface circuit (28) is provided to read out the stored data at a later time. A second unit (30), to which the first unit is connected (84) for data transfer, provides for display of the stored data (display) and for entering (keyboard) data corresponding to normal conditions of a heartbeat for use as a standard of comparison by the ambulatory unit (10).

Abstract translation: 心跳分析器包括由主体承载的移动单元（10），并且具有微处理器（24），用于控制来自拾取引线（16,18,20）到存储装置（26）的数据流的长达72小时的积累 数据并分析数据的速率节奏和形状。 提供接口电路（28），用于在稍后的时间读出所存储的数据。 用于数据传输的第一单元连接到第二单元（84）的第二单元（30）提供用于显示存储的数据（显示）和用于输入（键盘）与心跳的正常条件相对应的数据，以用作标准 由行走单位（10）进行比较。

公开(公告)号：WO1981002665A1

公开(公告)日：1981-10-01

申请号：PCT/US1981000342

申请日：1981-03-19

Applicant: DATAMEDIX INC

Inventor： DATAMEDIX INC ,  JUDELL N

IPC: A61B05/04

CPC classification number: A61B5/046

Abstract: A method and apparatus for declaring the presence of ventricular fibrillation from an incoming electrocardiographic signal (12) includes sampling (14, 16) at a first frequency and filtering (18) the same to produce a second frequency lower than the first frequency. This filtered signal is passed to a linear predictor (20) which fits a model signal spectrum to the actual signal spectrum and computes (60 d-e, 62 a-c, 64 a-b) coefficients representative of bandwidth and mean frequency of the signal over a short time interval. Then the coefficient of bandwidth (A2) is compared (68, 69) with a threshold value to determine whether or not it exceeds same, and if so the mean frequency coefficient (A1) is compared (71-76) with a range of values to determine whether it falls within a range corresponding to ventricular fibrillation; if it does, ventricular fibrillation is then declared (70) to be present.

Abstract translation: 用于从入射的心电图信号（12）声明存在心室颤动的方法和装置包括以第一频率进行采样（14,16）并对其进行滤波（18）以产生低于第一频率的第二频率。 该滤波信号被传递到线性预测器（20），该线性预测器（20）将模型信号频谱适合于实际信号频谱，并且计算表示在短时间间隔内信号的带宽和平均频率的（60de，62ac，64ab）系数 。 然后将带宽系数（A2）与阈值进行比较（68,69），以确定其是否超过相同，如果是，将平均频率系数（A1）与值范围（71-76）进行比较 以确定其是否落在对应于心室颤动的范围内; 如果是，则宣布室性颤动（70）存在。