Pump apparatus

Details Pump apparatus Pump apparatus

1989-11-06

1991-04-23

Yasko, John D.

Surgery

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

Material introduced into and removed from body through...

604 30, 604 37, A61M 100

Patent

active

050096354

ABSTRACT:
A pump apparatus such as a stomach pump or the like having a variable volume pumping chamber in the form of a resiliently flexible bulb with a one way flow check valve disposed within the bulb to preclude backflow therefrom, and a second check valve downstream of the resilient bulb, preferably within a reservoir to preclude backflow from the reservoir to the pumping chamber and to contain pumped matter within the reservoir.

REFERENCES:
patent: 15192 (1856-06-01), Peale
patent: 179950 (1876-07-01), Parsons
patent: 386603 (1888-07-01), Parsons
patent: 451179 (1891-04-01), Ware
patent: 598407 (1898-02-01), Armstrong
patent: 1925230 (1933-09-01), Buckhout
patent: 2064619 (1936-12-01), Leonard et al.
patent: 3133696 (1964-05-01), Mirando
patent: 3463159 (1969-08-01), Heimlich
patent: 3780736 (1973-12-01), Chen
patent: 3892226 (1975-07-01), Rosen
patent: 4607663 (1986-08-01), Raftis et al.
Denver Pleuro-Peritoneal Shunt, 1985, published by Codman & Shurtleff, Inc.

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