Respirator

Details Respirator Respirator

1975-09-25

1978-07-04

Michell, Robert W.

Surgery

Truss

Pad

1281422, 13762414, A61M 1600

Patent

active

040982726

ABSTRACT:
A respirator is described wherein a plurality of pneumatic bistable elements are employed in an automatically operated pneumatic circuit. A constant inspiratory to expiratory ratio pneumatic circuit is provided to simplify respirator control. A demand sensing circuit interrupts an oscillator to commence an inspiratory phase in response to pressure changes introduced in a patient gas supply circuit. A manual control is provided to enable manual dispensing of respiratory support. A pneumatic circuit is provided for generating an end inspiratory plateau period. During this period gas equilibration in different compartments of the lung is permitted and in addition a measurement of peak intraalveolar pressure is made.

REFERENCES:
patent: 3446207 (1969-05-01), Metivier
patent: 3730180 (1973-05-01), Davison
patent: 3905362 (1975-09-01), Eyrick et al.
patent: 3910270 (1975-10-01), Stewart
patent: 3916889 (1975-11-01), Russell

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