Hypodermic needle

Details Hypodermic needle Hypodermic needle

1996-07-26

1998-03-31

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

606223, A61M 532

Patent

active

057332665

ABSTRACT:
A hypodermic needle according to the present invention includes a hollow shaft having a substantially cylindrical inner surface and a substantially cylindrical outer surface. The needle includes a beveled surface extending between and connecting the inner surface and the outer surface of the needle tip. A cutting edge of the needle is formed between the beveled surface and the internal surface of the needle. The hypodermic needle avoids trauma, tearing, and other unnecessary tissue damage during penetration of tissue and during threading of the probe through blood vessels, tunnel incisions or cavities. An alternative embodiment of the hypodermic needle has a cutting edge which includes a rounded or blunted section at a trailing portion of the cutting edge.

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