Surgery – Truss – Pad
Patent
1976-03-01
1978-10-10
Michell, Robert W.
Surgery
Truss
Pad
A61M 2500
Patent
active
041191013
ABSTRACT:
An inflatable cuff of an endotracheal tube, having multiple lumens, is connected through a lumen to an exterior collapsible container; the cuff, lumen and collapsible container defining a closed pneumatic system that is adapted to receive a metered amount of gas sufficient to inflate the cuff, when the collapsible container is fully collapsed, to seal at a pressure, responsive to said metered amount of gas, undamaging to a trachea in which the tube is inserted. A relatively rigid and larger container encloses the collapsible container and is connected together with another lumen to a common source of air at lung inflation pressure in normal breathing pulsations whereby the trachea is invariably sealed at undamaging pressure unaffected by the amount of, and variation in, the lung inflation pressure of the supplied air, the sealing being in synchronization with lung inflation by the normal breathing pulsations. The remaining lumens may be used jointly and severally to remove fluids from and introduce medicines in the lungs.
REFERENCES:
patent: 2582210 (1952-01-01), Stanton
patent: 3158152 (1964-11-01), Bloom
patent: 3297027 (1967-01-01), Rusch
patent: 3504676 (1970-04-01), Lomholt
patent: 3848605 (1974-11-01), Harautuneian et al.
patent: 3905361 (1975-09-01), Hewson et al.
Lake, Jr. James B.
Michell Robert W.
Thaler Michael H.
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