Automatic sheath protection of hypodermic needle

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

A - Human Necessities

61

M

A61M 5/00 (2006.01) A61M 5/32 (2006.01)

Patent

CA 2066035

2066035 9101154 PCTABScor01 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 (19) circumscribes the needle (15) and includes barbs (28) 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with a patient's tissue to cause sliding movement of the sheath over the needle pointed end when the needle is withdrawn from the patient.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pointed end is covered, the barbs automatically withdraw and permit the needle sheath combination to be completely withdrawn from the patient.

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