Disposable hypodermic syringe

Details Disposable hypodermic syringe Disposable hypodermic syringe

1982-07-26

1984-09-04

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604238, 128765, A61M 500

Patent

active

044694822

ABSTRACT:
The invention relates to a disposable syringe comprising a barrel in which a piston is provided and to which a needle is or can be connected to the front, a stopper being present in the barrel between piston and needle or needle connection means. The inner wall of the barrel is locally deformed between stopper and needle or needle connection so that at the area of the deformation injection liquid can reach the cannula past the stopper and during nurse-aspiration the stopper is held, in which body fluid can reach the part of the barrel present behind the stopper.

REFERENCES:
patent: 2591046 (1952-04-01), Brown
patent: 3348546 (1967-10-01), Roberts et al.
patent: 3464412 (1969-09-01), Schwartz
patent: 3881484 (1975-05-01), Gidcumb, Jr.
patent: 4235235 (1980-11-01), Bekkering
patent: 4363329 (1982-12-01), Raitto

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