One handed retractable safety syringe

Details One handed retractable safety syringe One handed retractable safety syringe

1990-01-16

1990-11-27

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604198, 604110, A61M 532

Patent

active

049733168

ABSTRACT:
A disposable hypodermic syringe having a needle fixed to a piston assembly. The piston assembly is held within the barrel of said hypodermic syringe by a compressed spring and a trigger. When said trigger is disengaged with said piston assembly said spring pushed said piston assembly and said needle into said barrel of said hypodermic syringe and holds said needle fixed to said piston assembly within said barrel thus preventing any accidental injection of bacteria, virus or other undesirable material into others. The disengagement of said trigger with said piston assembly is accomplished with only one and the same hand that is used to inject the needle of the syringe into a body.

REFERENCES:
patent: 4747831 (1988-05-01), Kulli
patent: 4838863 (1989-06-01), Allard et al.
patent: 4850977 (1989-07-01), Bayless
patent: 4874382 (1989-10-01), Lindemann et al.

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