Pneumatic lung analog

Details Pneumatic lung analog Pneumatic lung analog

1976-09-17

1977-07-26

Skogquist, Harland S.

Surgery

Truss

Pad

73410, 128 208, G09B 2328

Patent

active

RE0293172

ABSTRACT:
A vertically oriented bellows has a fixed plate at one end and a movable plate at the other end. As air flows into the bellows, the movable plate pivots relative to the fixed plate and the free end thereof is cooperative with a readout panel to indicate the volume of the bellows. The plates are interconnected by an adjustable spring urging the plates toward each other when the bellows are expanded to simulate lung compliance. Selected tubes having calibrated flow characteristics interconnect the bellows to a lung ventilator to simulate lung resistance. Preferably, a pair of bellows are arranged in mutual association together to simulate a pair of lungs in order to analyze their interdependency.

REFERENCES:
patent: 2228983 (1941-01-01), Bloomheart
patent: 2999495 (1961-12-01), Shipley
patent: 3363260 (1968-01-01), Garbe

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