Cook Medical Technologies LLC

Cook Incorporated

Robert L Pakter

Edward J Morris

James Frederick McGuckin

A needle assemblycompromising an infusion needlethat includes a needle cannulamade of a superelastic material such as Nitinol. The needle cannula is cold-worked or heat annealed to produce a preformed bendthat can be straightened within passagewayof a coaxial outer cannulafor 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.

Hollow curved superelastic medical needle and method

A needle assembly comprising a needle that includes a needle cannula made of a superelastic material such as nitinol. The needle cannula is cold-worked or heat annealed to produce a preformed bend that can be straightened within passageway of a coaxial outer cannula 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.

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Tucson, AZ, United States of America

Robert L Pakter