Title:
METHOD AND APPARATUS FOR INHIBITING FLUID LOSS FROM A SYRINGE
Document Type and Number:
WIPO Patent Application WO2002066097
Kind Code:
A3
Abstract:
The present invention is directed to syringes (8) that have needles (72) that retract after an injection to provide safe syringes which reduce the possibility of a sharps injury through retraction of the needle (72) after use into the barrel (40), a needle assembly (70) positioned in the hollow body (42), a fluid retention system positioned in the hollow body (42), and a plunger assembly (100) that moves in the hollow body (42). A fluid retention system retains in the syringe (8) any fluid remaining in the needle (72) after the plunger assembly (100) approaches tha distal end of the hollow body (42). The fluid retention system includes a variable volume vacuum cavity in fluid communication with the needle assembly (70) and providing a pressure drop in the needle (72), tending to draw into the hollow body (42) any fluid remaining in the needle (72).
Inventors:
FIELD JEFFREY (US)
DUNEC JOHN (US)
DUNEC JOHN (US)
Application Number:
PCT/US2002/000469
Publication Date:
March 27, 2003
Filing Date:
January 07, 2002
Export Citation:
Assignee:
FUTURA MEDICAL CORP (US)
FIELD JEFFREY (US)
DUNEC JOHN (US)
FIELD JEFFREY (US)
DUNEC JOHN (US)
International Classes:
A61M5/32; A61M5/31; (IPC1-7): A61M5/00
Foreign References:
| US6409701B1 | 2002-06-25 | |||
| US5782804A | 1998-07-21 | |||
| US5484421A | 1996-01-16 | |||
| US5211628A | 1993-05-18 |
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