Safety self-destroying disposable syringe

Details Safety self-destroying disposable syringe Safety self-destroying disposable syringe

2005-01-25

2009-12-29

Desanto, Matthew F (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

Reexamination Certificate

active

07637890

ABSTRACT:
The present invention provides a safety self-destroying disposable syringe, which consists of a hollow tube, a plunger fitting into the inside of the hollow tube and a rubber piston attached on the tip end of the plunger, and a needle holder attached on the front end of the hollow tube, wherein said needle holder is comprised of a cone base and a seat; said cone base has a Roll cone for fitting into the needle, and a circular base for fitting into the inside of the hollow tube, there are several O-rings attached on the contacting surface between them; there is a locating ring-groove built on the inside wall of the hollow tube approaching the front end for catching up the needle holder; said plunger has a conical head built on the front end, and said conical head has a circular barb built on the middle portion. The safety syringe provided by the present invention can be withdrew into the inside of the tube, and also suit to match to diversity of standard needles for replacing, it also has simple structure, easy manufacturing and convenient use with high safeness features.

REFERENCES:
patent: 5401246 (1995-03-01), Mazur et al.
patent: 6752784 (2004-06-01), Tsai

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