A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/108
A61M 1/00 (2006.01)
Patent
CA 1148050
ABSTRACT A device for use in vacuum suction systems for with- drawing fluids from a patient's body cavity, such as the stomach, wherein the device includes a chamber that is located in the flow stream of such fluids between the patient and the source of vacuum. At predetermined intervals, the device forces a quan- tity of the withdrawn fluid from the chamber, back into the suc- tion tubing leading to the patient such that some of the fluid previously removed from the body cavity is forced backward toward such cavity under a positive pressure to dislodge any ob- structions that may have occurred in the tubing or at the end of such tubing. In the preferred embodiment, the device is effect- ively self-contained and needs no source of positive pressure or electricity for its operation and is readily and fully oper- able from present commercial intermittent suction systems with- out revamping or otherwise modifying existing systems.
344253
Kayser John P.
Rick Norman A.
Airco Inc.
Gowling Lafleur Henderson Llp
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