Single use syringe

Details Single use syringe Single use syringe

2006-02-07

2006-02-07

Lucchesi, Nicholas D. (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S195000, C604S240000

Reexamination Certificate

active

06994690

ABSTRACT:
A single use syringe has a needle which is biased back into the barrel but which is prevented from doing so by a holding means which has an outer part and an inner part which are connected together by a frangible portion. The needle is held by the inner part. When the plunger is pushed towards the front of the barrel, it contacts the outer part and pushes it forwardly which stretches the frangible portion until it bursts. When the frangible portion breaks, the inner portion containing the needle is released and can shoot back into a hollow portion in the plunger through the frangible portion of the plunger head.

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patent: US98/07361 (1998-04-01), None
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