Lung ventilator

Details Lung ventilator Lung ventilator

1976-07-26

1978-01-10

Frinks, Ronald L.

Surgery

Truss

Pad

1281457, 128202, A61M 1600

Patent

active

040673286

ABSTRACT:
A lung ventilator which transmits from a bellows respirable gas and/or anaesthetic gas directly to a patient during the inspiratory phase of the patient's breathing cycle and in which, during the expiratory phase of said cycle, the patient exhales directly into a rebreathing bag and at some time during this latter phase, the bellows is caused to inflate to thereby draw in exhaled gas both directly from the patient and from the interior of the rebreathing bag. The bellows and rebreathing bag are isolated one from the other by a biassed flow control valve situated in a conduit linking them together, which valve will allow the contents of the rebreathing bag to be emptied into the patient by squeezing the bag at any time during operation of the ventilator.

REFERENCES:
patent: 2907322 (1959-10-01), Hay
patent: 3754550 (1973-08-01), Kipling
patent: 3842828 (1974-10-01), Bird
patent: 3921628 (1975-11-01), Smythe et al.

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