Safety syringe

Details Safety syringe Safety syringe

2006-07-11

2006-07-11

Lucchesi, Nicholas D. (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S195000

Reexamination Certificate

active

07074207

ABSTRACT:
A safety syringe includes a flexible holder-supporting seat that is sleeved around and that clamps a needle holder within a front end portion of a syringe barrel. A flexible sealing member seals an open front end of a plunger so as to define a vacuum chamber in the plunger. When the plunger moves within the barrel to a front limit position, a holder-retaining front portion of the sealing member engages and retains the needle holder thereon, and the plunger pushes the holder-supporting seat to separate from the needle holder such that the sealing member and the needle holder move rearward within the syringe barrel due to negative pressure produced in the plunger, thereby retracting a needle into the syringe, barrel.

REFERENCES:
patent: 4828548 (1989-05-01), Walter
patent: 5114410 (1992-05-01), Caralt Batlle
patent: 5395337 (1995-03-01), Clemens et al.
patent: 6077245 (2000-06-01), Heinrich et al.
patent: WO 95/31236 (1995-11-01), None
patent: WO 95/31236 (1995-11-01), None

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