Protective needle assembly for hypodermic syringe

Details Protective needle assembly for hypodermic syringe Protective needle assembly for hypodermic syringe

1992-03-23

1993-10-19

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604263, A61M 532

Patent

active

052541002

ABSTRACT:
A needle-protecting assembly adapted to be mounted upon the discharge extremity of the barrel of a conventional hypodermic syringe has a cylindrical hub adapted to hold a cannula needle of conventional construction. A transparent cylindrical sheath slidingly engages the hub. The sheath has a longitudinal slot and communicating detent, and a locking aperture. A tab radially emergent from the hub can be caused to engage the detent, slot or locking aperture, achieving respectively, a storage state where the sheath extends forwardly of the tip of the needle, a use state where the tip of the needle extends forwardly of the sheath, and an irreversibly locked disposal state wherein the sheath is forward of the tip of the needle.

REFERENCES:
patent: 4695274 (1987-09-01), Fox
patent: 4961730 (1990-10-01), Poncy
patent: 5011479 (1991-04-01), Le et al.
patent: 5053018 (1991-10-01), Talonn et al.
patent: 5104385 (1992-04-01), Huband

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