Structure of safety hypodermic syringe

Details Structure of safety hypodermic syringe Structure of safety hypodermic syringe

1995-10-24

1996-11-19

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

055757740

ABSTRACT:
A safety hypodermic syringe in which the needle holder has an arrowhead-like rear retaining hole; the rubber stopper has an arrowhead-like retainer rod that can be forced into engagement with the retaining hole of the needle holder for permitting the needle holder with the needle cannula to be pulled backwards to the inside of the barrel by the plunger; the plunger can be disconnected from the rubber stopper and then inserted into the front end of the barrel to deform the needle cannula when the needle cannula is received on the inside of the barrel.

REFERENCES:
patent: 4804370 (1989-02-01), Haber et al.
patent: 4846808 (1989-07-01), Haber et al.
patent: 5104378 (1992-04-01), Haber et al.
patent: 5295973 (1994-03-01), Chen

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