Accession Number : AD0163552

Title :   Heartbeat Monitor.

Descriptive Note : Patent,

Corporate Author : OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C

Personal Author(s) : Ragsdale,Charles W.

Report Date : 28 JUN 1971

Pagination or Media Count : 16

Abstract : Disclosed is a patent of an electronic heart monitor for monitoring electrocardiograph waveforms of a human heart. The unit is lightweight, battery operated, and usable over a wide temperature range so as to satisfy military requirements. It indicates high and low heart rates, fibrillation, arrest, excess noise, average heart rate and low battery potential, all in a manner requiring no extensive interpretation by trained personnel. The heartbeat monitor comprises input terminals for coupling to a source of electrocardiogram waves, and alarm, and a fibrillation sensing circuit for coupling the input terminals to the alarm such that the alarm is actuated by the sensing circuit whenever a fibrillation waveform is applied to the input terminals. The fibrillation sensing circuit comprises means for sensing the duty cycle of an electrocardiogram wave expending beyond predetermined maximum and minimum values.

Descriptors :   (*HEART, MONITORS), (*PATENTS, MONITORS), ELECTRONIC EQUIPMENT, ELECTROCARDIOGRAPHY, CARDIOVASCULAR DISEASES

Subject Categories : Biomedical Instrumentation and Bioengineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE