04465485 is referenced by 553 patents and cites 11 patents.

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.

Title
Suction canister with unitary shut-off valve and filter features
Application Number
241153
Publication Number
4465485
Application Date
May 16, 1983
Publication Date
August 14, 1984
Inventor
Randall P Vendetti
Lincoln Park
NJ, US
John K Klimbach
Wayne
NJ, US
James S Kashmer
Budd Lake
NJ, US
Agent
John L Voellmicke
Richard J Rodrick
Assignee
Becton Dickinson and Company
NJ, US
IPC
A61M 1/00
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