Syringe incorporating a self-contained retractable needle

Details Syringe incorporating a self-contained retractable needle Syringe incorporating a self-contained retractable needle

1994-09-21

1996-01-16

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

054844142

ABSTRACT:
The invention is a syringe with a retractable needle, comprising a syringe housing having a bore, a needle assembly within the bore, and a plunger assembly extending into the bore. The plunger assembly has a rectangular key. The needle assembly has a key hole which matches the key, so that the key may be inserted into the key hole. After conventional use the plunger is rotated to lock the key within the key hole, and the plunger withdrawn to retract the needle through a resilient elastomeric seal into the syringe, rendering it inoperable and harmless.

REFERENCES:
patent: 4677980 (1987-07-01), Reilly et al.
patent: 4911695 (1990-03-01), Lindner
patent: 4919657 (1990-04-01), Haber et al.
patent: 4950251 (1990-08-01), Haining
patent: 5098402 (1992-03-01), Davis
patent: 5190526 (1993-03-01), Murray et al.
patent: 5242419 (1993-09-01), Kiner et al.
patent: 5346474 (1994-09-01), King

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