Safety syringe

Details Safety syringe Safety syringe

1993-06-07

1994-03-22

Weiss, John G.

Surgery

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

Treating material introduced into or removed from body...

604110, A61M 532

Patent

active

052959732

ABSTRACT:
A hollow needle is adapted to be used in a safety syringe which is automatically blocked by a rigid blocking member after finishing an injection and retraction of the used needle into a syringe cylinder, having a bifurcated slot longitudinally notched in a rear portion of a shank and needle head portion of the hollow needle and a plurality of protrusions annularly formed on a circumferential surface of the shank portion of the needle for an easier, smooth and stable embedding of the needle on the rigid blocking member in the syringe, thereby being helpful for a smooth injection and retraction operation of the needle.

REFERENCES:
patent: 5047016 (1991-09-01), Dolgn et al.
patent: 5061249 (1991-10-01), Campbell
patent: 5171300 (1992-12-01), Blake et al.
patent: 5205826 (1993-04-01), Chen
patent: 5232458 (1993-08-01), Chen

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