Safety syringe

Details Safety syringe Safety syringe

1992-08-03

1993-12-28

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604195, A61M 500

Patent

active

052735419

ABSTRACT:
A safety syringe has a hollow shield with a plunger opening on one end and a needle opening on the other end. At least one locking lug is mounted at the plunger opening. The syringe also has a lumen that is telescopically mounted at least partially within the shield. The lumen has a catch for engaging the locking lug. A needle attached to the lumen is aligned with the needle opening of the shield. An urging means is mounted in the shield to urge the lumen and to retract the needle into the shield. A plunger has an inner end slidably mounted in the lumen and an outer end mounted through the plunger opening. The outer end of the plunger has an extension for engaging and deflecting the locking lug to release the catch, which allows the urging means to retract the needle into the shield.

REFERENCES:
patent: 4850968 (1989-07-01), Romano
patent: 4927416 (1990-05-01), Tomkiel
patent: 4932947 (1990-06-01), Cardwell
patent: 5026354 (1991-06-01), Kocses
patent: 5066277 (1991-11-01), Carrell et al.

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