Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1995-06-06
1998-09-15
McDermott, Corrine M.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604209, 604234, A61M 5178
Patent
active
058073400
ABSTRACT:
A self refilling syringe for administering medicinal fluid to a patient including a removable syringe body having a plunger chamber formed at its front end with a connector port. A plunger is received in the chamber from an open end opposite the connector port and includes a plunger head on one end and a piston on the other end. The forward end of the syringe body includes a hub device mounted on the front end of the syringe body and is formed with a filler port and an applicator port in communication with the connector port. A filler check valve and an applicator check valve are disposed in the respective filler and applicator ports. Upon application of a positive pressure to the filler and applicator check valves from the chamber, the applicator check valve closes and the filler check valve opens to discharge fluid through the applicator port. Upon application of a partial vacuum to the filler and applicator check valves from the chamber, the filler check valve opens and the applicator check valve closes to draw a replenishing volume of fluid into the chamber through the filler port refilling the syringe chamber.
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McDermott Corrine M.
Nguyen A. T.
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