US PATENT SUBCLASS 604 / 126
.~.~.~.~ By hydrophilic or hydrophobic filters

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}
122  DF  .~.~.~ Having means for eliminating and/or preventing injection of air into body {4}
126.~.~.~.~ By hydrophilic or hydrophobic filters

DEFINITION

Classification: 604/126

By hydrophilic or hydrophobic filter:

(under subclass 122) Subject matter wherein the air prevention or elimination means consists of either a water attracting or water repelling filter mounted in an injection device.