Needle for medical use

Details Needle for medical use Needle for medical use

2006-04-04

2006-04-04

Rodriguez, Cris (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S274000, C604S164010, C604S264000, C606S185000

Reexamination Certificate

active

07022110

ABSTRACT:
A medical needle includes a solid rod-like inner needle to be inserted into the living tissue, and a hollow cylindrical outer tube needle to be inserted into the living tissue together with the inner needle, while the inner needle is inserted into the inner needle. The hollow cylindrical outer tube needle is retained in the living tissue after the inner needle is removed. A tip portion of the inner needle extending out of a front end bore of the outer tube needle is formed as a spherical crown portion capable of being inserted along a punctured hole previously formed in the living tissue so as not to damage the lumen of the punctured hole. Accordingly, it is possible to reduce a pain upon creating a puncture, subcutaneous bleeding and damage to a blood vessel wall, eliminate coring, and an infectious accident.

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