Self destructive safety syringe

Details Self destructive safety syringe Self destructive safety syringe

1992-01-20

1993-01-19

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

051803690

ABSTRACT:
A self destructive safety syringe assembly having a needle cannula fixed to a slideable piston. The slideable piston and slideable piston flange are held within the first barrel of the syringe assembly by a compressed spring, a guide tube and a shatter ring. The hollow elongated plunger of the syringe assembly is a hollow elongated tube with a thumb flat at one end, a sliding gasket, a plunger shatter plate and a hook rim at the other end. When medicament is injected into a body the elongated hollow plunger is further thrust into the shatter ring, the shatter ring shatters, or breaks or fails further allowing the slideable piston and slideable piston flange to thrust into the plunger shatter plate thus causing the plunger shatter plate to shatter, or fail or break. This action further causes the slideable piston and needle cannual to be thrust into the elongated hollow plunger by the spring and wherein the spring will further prevent the slideable piston and needle cannula from re-entering the guide tube and further rendering the syringe unuseable and completely destroyed internally. The needle cannula is further completely contained within the elongated hollow plunger wherein it cannot touch, prick or injure another or further inject a disease into others.

REFERENCES:
patent: 4966592 (1990-10-01), Burns et al.
patent: 4973316 (1990-11-01), Dysarz
patent: 5049133 (1991-09-01), Pascual
patent: 5084018 (1992-01-01), Tsao
patent: 5088986 (1992-02-01), Nusbaum
patent: 5092853 (1992-03-01), Couvertier, II

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