Non-reusable, disposable syringes

Details Non-reusable, disposable syringes Non-reusable, disposable syringes

1981-07-30

1983-07-05

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

A61M 500

Patent

active

043912737

ABSTRACT:
The present invention refers to improvements in disposable items, particularly self-destructing or otherwise automatically non-reusable hypodermic syringes having a self-destructing element which is actuated during the injection stroke of the piston. The invention provides an upper stop member, generally provided by a plate with a circular hole having a diameter permitting withdrawal of the plunger but not the piston and also a cylindrical protuberance adjacent the injection end of the cylinder and extending beyond the cylindrical wall so as to shield the fingers of the user from a self-destructing pin forced through the bottom wall of the cylinder under completion of the injection stroke. A cover plate for said cylindrical protuberance having an interior hole for the injection needle is also shown.

REFERENCES:
patent: 3134380 (1964-05-01), Armao
patent: 3677245 (1972-07-01), Welch
patent: 3951146 (1976-04-01), Chiquiar-Arias
patent: 3998224 (1976-12-01), Chiquiar-Arias
patent: 4213456 (1980-07-01), Bottger

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