US PATENT SUBCLASS 604 / 256
.~.~.~.~ Having flow closing or opening means (e.g., plug, cap, seal, etc.)

Current as of: June, 1999
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604 /   HD   SURGERY

19  DF  MEANS FOR INTRODUCING OR REMOVING MATERIAL FROM BODY FOR THERAPEUTIC PURPOSES (E.G., MEDICATING, IRRIGATING, ASPIRATING, ETC.) {7}
48  DF  .~ Treating material introduced into or removed from body orifice, or inserted or removed subcutaneously other than by diffusing through skin {9}
93  DF  .~.~ Material introduced or removed through conduit, holder, or implantable reservoir inserted in body {30}
246  DF  .~.~.~ Means for controlling material flow to or from body, or metering a predetermined dose or amount {6}
256.~.~.~.~ Having flow closing or opening means (e.g., plug, cap, seal, etc.)

DEFINITION

Classification: 604/256

Having flow closing or opening means (e.g., plug, cap, seal, etc.):

(under subclass 246) Subject matter including closure or seal

means on the conduit which prevents flow to or from the body until the closure or seal is opened, or conversely, which stops flow when the closure or seal is closed.

(1) Note. The closure or seal usually is a plug, cap, or a resealable closure member.