Safety syringe with retractible self-biased needle adapted for i

Details Safety syringe with retractible self-biased needle adapted for i Safety syringe with retractible self-biased needle adapted for i

1993-02-11

1993-09-07

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

052424022

ABSTRACT:
A safety syringe includes: an annular groove annularly recessed in a front surface of a plunger slidably held in the syringe to be engageable with a needle head portion formed on a rear portion of a hollow needle eccentrically mounted in a front portion of the syringe, with the annular groove having a longitudinal section formed as a biasing socket engageable with the needle head portion for biasing the needle obliquely within the syringe when retracting the plunger and the needle into the syringe, thereby preventing an outward protruding of the retracted needle for safety and hygienic purpose.

REFERENCES:
patent: 4804370 (1989-02-01), Haber et al.
patent: 5104378 (1992-04-01), Haber et al.

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