Hollow curved superelastic medical needle and method

Details Hollow curved superelastic medical needle and method Hollow curved superelastic medical needle and method

2009-12-17

2011-11-01

Mendez, Manuel (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

Reexamination Certificate

active

08048030

ABSTRACT:
A needle assembly10compromising an infusion needle11that includes a needle cannula13made of a superelastic material such as Nitinol. The needle cannula is cold-worked or heat annealed to produce a preformed bend16that can be straightened within passageway21of a coaxial outer cannula12for introduction into the body of a patient. Upon deployment from the outer cannula, the needle cannula substantially returns to the preformed configuration for the introduction or extraction of materials at areas lateral to the entry path of the needle assembly. The needle assembly can compromise a plurality of needle cannulae than can be variably arranged or configured for attaining a desired infusion pattern.

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