06592559 is referenced by 278 patents and cites 3 patents.

A needle assembly

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comprising a needle

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that includes a needle cannula

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made of a superelastic material such as nitinol. The needle cannula is cold-worked or heat annealed to produce a preformed bend

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that can be straightened within passageway

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of a coaxial outer cannula

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for 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 comprise a plurality of needle cannulae than can be variably arranged or configured for attaining a desired infusion pattern.

Title
Hollow, curved, superlastic medical needle
Application Number
9/457844
Publication Number
6592559 (B1)
Application Date
December 9, 1999
Publication Date
July 15, 2003
Inventor
Edward J Morris
Bloomington
IN, US
Robert L Pakter
Mill Valley
CA, US
Agent
Brinks Hofer GIlson & Lione
US
Assignee
Cook Incorporated
IN, US
IPC
A61M 5/32
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