Automatic sheath protection of hypodermic needle

Details Automatic sheath protection of hypodermic needle Automatic sheath protection of hypodermic needle

1989-07-14

1990-11-27

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

049733176

ABSTRACT:
Various embodiments of a simple hypodermic needle assembly are described designed to automatically cover the pointed end of the needle after the assembly is used in order to prevent accidental punctures. A sheath circumscribes the needle and includes barbs for interacting with a patient's tissue to cause sliding movement of the sheath over the needle pointed end when the needle is withdrawn from the patient. When the needle pointed end is covered, the barbs automatically withdraw and permit the needle sheath combination to be completely withdrawn from the patient.

REFERENCES:
patent: 4846809 (1989-07-01), Sims
patent: 4850996 (1989-07-01), Cree

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