Safely disposable syringe

Details Safely disposable syringe Safely disposable syringe

1992-01-21

1996-02-20

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604198, 604263, A61M 532

Patent

active

054925363

ABSTRACT:
A hypodermic syringe with a protective sheath which is spring urged to cover the needle assembly and releaseably retained on the syringe barrel. The syringe comprises a syringe barrel with a needle assembly attached at one end and a plunger inserted in the other end for movement therein. The protective sheath is mounted over the syringe barrel for movement thereon. One end of a spring is attached to the syringe barrel and the other end is attached to the sheath. The spring is urged to push the sheath over the needle assembly creating a cone-shaped structure around the needle assembly. A hook on the flange engages the sheath and retains it in a retracted position, until released. A locking mechanism secures the sheath over the needle assembly once fully extended.

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