US PATENT SUBCLASS 604 / 227
.~.~.~.~.~.~ Specific structure of finger grip for moving piston


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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}
181  DF  .~.~.~ Means moved by person to inject or remove fluent material to or from body inserted conduit, holder, or reservoir {3}
187  DF  .~.~.~.~ Injector or aspirator syringe supported only by person during use (e.g., hand held hypodermic syringe, douche tube with forced injection, etc.) {13}
218  DF  .~.~.~.~.~ With piston or plunger for expelling material from body or injector reservoir {15}
227.~.~.~.~.~.~ Specific structure of finger grip for moving piston


DEFINITION

Classification: 604/227

Specific structure of finger grip for moving piston:

(under subclass 218) Subject matter wherein significance is attributed to specific finger grip structure for gripping by the operator to facilitate manipulation of the piston.

(1) Note. It is well known that most all handheld injectors or aspirators have finger engaging means of some sort; however, for a patent to be classified in this subclass, the specific finger grip structure must be claimed.