Disposable safety syringe

Details Disposable safety syringe Disposable safety syringe

2010-06-23

2011-10-11

Lucchesi, Nicholas D (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S187000, C604S218000, C604S228000, C604S241000, C604S243000

Reexamination Certificate

active

08034025

ABSTRACT:
A disposable safety syringe in one embodiment includes a syringe barrel; a plunger comprising a push rod; hollow first, second, and third adapters for forming an airtight engagement with an inner surface at one end of the syringe barrel; and a needle threadedly secured to the first adapter to establish a communication with inside of the syringe barrel prior to beginning a liquid dispensing operation with respect to a subject. After injection and pulling the needle out of a subject, a pulling of the plunger can be stopped, a further pulling of the plunger can also be stopped when an annular cutting groove of the plunger is about flush with the other end of the syringe barrel with the needle being retracted into the syringe barrel, and a breaking operation along the cutting groove can break the plunger.

REFERENCES:
patent: 5533970 (1996-07-01), Berger et al.
patent: 6706015 (2004-03-01), Bang
patent: 2005/0096602 (2005-05-01), Lin

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