US PATENT SUBCLASS 604 / 321
.~.~ Having liquid seal means

Current as of: June, 1999
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604 /   HD   SURGERY

317  DF  MEANS AND METHODS FOR COLLECTING BODY FLUIDS OR WASTE MATERIAL (E.G., RECEPTACLES, ETC.) {5}
319  DF  .~ Aspiration collection container or trap (e.g., canister, etc.) {2}
321.~.~ Having liquid seal means

DEFINITION

Classification: 604/321

Having liquid seal means:

(under subclass 319) Subject matter wherein the vacuum container is provided with a liquid seal means about the suction inlet port to prevent a backflow return to the body of effluent and air from the collecting means.