Disposable syringe with retractable needle

Details Disposable syringe with retractable needle Disposable syringe with retractable needle

1990-05-09

1991-02-26

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604195, 604263, A61M 500

Patent

active

049958704

ABSTRACT:
A safety syringe comprises a needle releasably lockable at the syringe outlet. The needle has means such as a barb for engaging and catching to a syringe plunger when the plunger is depressed to inject the syringe contents into a patient. After loosening the needle, retraction of the plunger will withdraw the needle safely into the safety of the syringe barrel.

REFERENCES:
patent: 2607343 (1952-08-01), Sarver
patent: 4813936 (1989-03-01), Schroeder

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