Suction canister with shut-off valve and smoke filter

Details Suction canister with shut-off valve and smoke filter Suction canister with shut-off valve and smoke filter

1983-01-31

1984-12-11

Rosenbaum, C. Fred

Surgery

Means and methods for collecting body fluids or waste material

Aspiration collection container or trap

141 59, 55385C, 55482, A61M 100

Patent

active

044876068

ABSTRACT:
A suction canister assembly comprises an enclosed receptacle having a first opening for providing suction to the receptacle and a second opening for drawing fluids, including liquids and gases, into the receptacle during suction. A unitary shut-off valve/filter element is associated with the interior side of the first opening. This element is oriented within the receptacle so as to be contacted by liquid in the receptacle which rises therein. The element is porous and is adapted to filter particulate matter from gas passing therethrough. In addition, the valve/filter element is capable of developing sufficiently high surface tension under liquid contact to serve as a barrier against liquid passage therethrough at pressure differentials across the element when vacuum is applied on one side of the element. As a result, the element is adapted to terminate suction through the suction opening when liquid rises in the receptacle to completely cover the element. A smoke filter element for filtering solids and liquids contained in smoke is positioned adjacent to the valve/filter element. A spacer for substantially preventing filtered matter collected by the smoke filter from migrating to the valve/filter element is positioned between the valve/filter element and the smoke filter.

REFERENCES:
patent: 3719197 (1973-03-01), Pannier et al.
patent: 3738381 (1973-06-01), Holbrook
patent: 4013076 (1977-03-01), Puderbaugh et al.
patent: 4111204 (1978-09-01), Hessel
patent: 4228798 (1980-10-01), Deaton
patent: 4275732 (1981-06-01), Gereg
patent: 4323082 (1982-04-01), Helms et al.
"Gore-Tex.RTM.", Expanded PTFE, W. L. Gore & Associates, Inc., Elkton, Maryland 21921, 1978.
"Gore-Tex.RTM.", A Porous and Versatile Structure of Fluon.RTM.PTFE, W. L. Gore & Associates, Inc., Elkton, Maryland 21921.
Gore-Tex Membrane Products, W. L. Gore & Associates, Inc., Elkton, Maryland 21921.

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