Self-contained safety syringe

Details Self-contained safety syringe Self-contained safety syringe

1995-09-27

1997-07-15

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604198, A61M 500

Patent

active

056478496

ABSTRACT:
A self-contained syringe includes a syringe barrel with a fluid receiving chamber. A plunger is slidably disposed in the chamber. A needle cannula is affixed to the distal end of the syringe barrel. A cap is releasably secured over proximal portions of both the plunger and the syringe barrel. A tubular shield is releasably engaged in an intermediate position on the syringe barrel such that distal portions of the shield surround the needle cannula. A removable or frangible sterile seal is secured over the extreme distal end of the shield. The cap and the seal may be removed immediately prior to use. The shield may then be moved proximally into a proximal position which exposes the needle cannula for use. The shield may then be moved distally and locked into distal position where the needle cannula is protectively surrounded.

REFERENCES:
patent: 4929232 (1990-05-01), Sweeney et al.
patent: 5188613 (1993-02-01), Shaw
patent: 5205827 (1993-04-01), Novacek et al.
patent: 5304149 (1994-04-01), Morigi
patent: 5312370 (1994-05-01), Talonn et al.

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