Accession Number : AD0164671
Title : Respiration Monitor.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Personal Author(s) : Yates,John W.
Report Date : 09 APR 1974
Pagination or Media Count : 8
Abstract : The invention discusses how respiration is monitored by measuring a subject's impedance by impressing an oscillator-controlled constant current source upon the subject. The output is fed to a differential amplifier, bandpass filtered, and full wave rectified. The differential amplifier can be switched to be fed by separate electrodes on the subject and not connected to the constant current source.
Descriptors : *Patents, *Respiration, *Plethysmography, Medical equipment, Monitors, Electrical impedance, Thorax
Subject Categories : Medical Facilities, Equipment and Supplies
Distribution Statement : APPROVED FOR PUBLIC RELEASE