Patient ventilator

Details Patient ventilator Patient ventilator

1975-08-21

1977-01-18

Michell, Robert W.

Surgery

Truss

Pad

A61M 1600

Patent

active

040033775

ABSTRACT:
An improved patient ventilator for providing a mode of operation wherein mandatory breaths are supplied to a patient intermittently, and wherein those mandatory breaths are synchronized with the patient's normal breathing cycle. An adjustable timer provides an output signal for controlling the duration between mandatory breaths, and a delay circuit prevents the output signal from the timer from initiating the mandatory breath for a predetermined delay period to permit the patient to initiate that breath himself. The intermittent mandatory breaths are made "mandatory" by closing off an exhalation valve while a fixed quantity or pressure level of oxygen is supplied to the patient.

REFERENCES:
patent: 3834382 (1974-10-01), Lederman et al.
patent: 3910270 (1975-10-01), Stewart
patent: 3916889 (1975-11-01), Russell

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