Automatic safety valves for cardiotomy reservoirs

Details Automatic safety valves for cardiotomy reservoirs Automatic safety valves for cardiotomy reservoirs

1987-06-15

1988-11-01

Pellegrino, Stephen C.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

137540, A61M 100

Patent

active

047816864

ABSTRACT:
A safety lock cap for use with a cardiotomy reservoir, having a passageway formed therein under control of a positive pressure relief valve and projecting axially into the reservoir beyond the outer tubular portion of the cap inserted into a port opening in the reservoir vessel. Under positive pressure, the cardiotomy reservoir is vented through the passageway so that during operation of a heart-lung machine the safety lock cap will provide a minimum amount of safe positive pressure and become a relief valve that decompresses the cardiotomy reservoir.

REFERENCES:
patent: 401391 (1889-04-01), Stuck
patent: 3157191 (1964-11-01), Garrett et al.
patent: 3192949 (1965-07-01), DeSee
patent: 3782412 (1974-01-01), Davesh
patent: 3993067 (1976-11-01), Schachet
patent: 4328828 (1982-05-01), Ciani
`ITHAT` Catalog Cut. Medi-Vac Corp. Jacksonville, Texas 75766, 1979.

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