Respiration monitoring apparatus and method

Details Respiration monitoring apparatus and method Respiration monitoring apparatus and method

1981-08-19

1984-04-24

Cohen, Lee S.

Surgery

Truss

Pad

128725, 12820423, 12820523, A61B 508

Patent

active

044442017

ABSTRACT:
A respiration monitoring apparatus which comprises meters for determining the flow rate of air flow and the airway pressure of the living body fitted with an artificial respirator; a monitor for displaying the waveforms of output signals from the meters. The apparatus further comprises a signal processing circuit which detects the end of the respective expiratory periods from the marks indicated by the output signals from the meters which denote the flow rate of breathed air flow, stores the average value of the airway pressures determined at the end of the respective expiratory periods, and, where the measured airway pressure determined falls below the stored average value, issues a detection signal denoting this condition, thereby changing a display pattern on the monitor.

REFERENCES:
patent: 3961624 (1976-06-01), Weigl
patent: 4050458 (1977-09-01), Friend
Computers and Biomedical Research 12, 433-443 (1979), R. R. Mitchell et al., "On-Line Measurement of Patient-Ventilator Fighting".
Siemens-Elema Servo Ventilator 900/900B Operating Manual ME461/5084.101 printed in Sweden AG 1176Z,5.

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