US PATENT SUBCLASS 604 / 120
.~.~.~.~.~ With cyclic or timed regulation

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}
118  DF  .~.~.~ Having means for varying, regulating, indicating, or limiting injection pressure or aspirating suction {2}
119  DF  .~.~.~.~ Means varying or regulating suction {1}
120.~.~.~.~.~ With cyclic or timed regulation

DEFINITION

Classification: 604/120

With cyclic or timed regulation:

(under subclass 119) Subject matter wherein the change or regulation of suction is accomplished in a recurring periodic sequence generally intermittant in nature.