Safety syringe with non-linear needle

Details Safety syringe with non-linear needle Safety syringe with non-linear needle

1994-01-18

1995-08-29

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604240, 604110, A61M 532, A61M 531, A61M 500

Patent

active

054456185

ABSTRACT:
A rectangular hypodermic syringe with a needle that can not be re-used once a nonlinear needle has been moved to a needle protecting retracted position includes a rectangular cylinder; a rectangular plunger for displacing the fluid within the cylinder; a rectangular needle guard, having an interior chamber, demountably attached to the rectangular cylinder; an elongate needle assembly, having a nonlinear needle, slidably mounted within the interior chamber of said needle guard; and means for fluidly coupling said cylinder to said needle when the needle assembly is in the extended position and for fluidly separating the cylinder from the needle when the needle assembly is in the retracted position. Lock means locks the needle assembly in the needle exposing extended position. Release means unlocks the needle assembly allowing a coil spring to move the needle assembly to the needle protecting retracted position. The spring keeps the needle in the needle protecting retracted position and from returning to the needle exposing extended position.

REFERENCES:
patent: 2894509 (1959-07-01), Bednarz
patent: 4941883 (1990-07-01), Venturini
patent: 5000167 (1991-03-01), Sunderland
patent: 5147323 (1992-09-01), Haber et al.
patent: 5163916 (1992-11-01), Sunderland
patent: 5188119 (1993-02-01), Sunderland
patent: 5201718 (1993-04-01), Whisson
patent: 5215534 (1993-06-01), De Harde et al.
patent: 5232456 (1993-08-01), Gonzalez
patent: 5246427 (1993-09-01), Sturman et al.
patent: 5263942 (1993-11-01), Smedley et al.
patent: 5267973 (1993-12-01), Haber et al.

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