3823708 is referenced by 38 patents and cites 7 patents.

A selective circuit is provided for passing only selected waveforms of a desired polarity from a complex input waveform. The circuit is particularly adapted for use in a heart ventricular arrhythmia detector. In such a detector, it is first necessary to differentiate the abnormal negative ventricular ectopic beats from the normal negative Q & S waves. After these abnormal beats are detected, they are accumulated and, if a number of them occur within a limited period of time, an alarm circuit is actuated. One embodiment also includes means for detecting bradycardia and tachycardia. A further embodiment provides means for transmitting an ECG over the telephone.

Title
Tachycardia detector
Application Number
05/260,775
Publication Number
3823708
Application Date
June 8, 1972
Publication Date
July 16, 1974
Inventor
Lawhorn Richard D
Agent
Slick Robert G
Assignee
Cardiodynamics
IPC
A61b 05/04
A61B 05/24
A61B 05/245
A61B 05/00
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