The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 30, 2002
Filed:
Sep. 22, 2000
James Frederick McGuckin, Radnor, PA (US);
Edward J. Morris, Bloomington, IN (US);
Cook Incorporated, Bloomington, IN (US);
Abstract
A needle assembly ( ) comprising an infusion needle ( ) that includes a plurality of needle cannulae ( ) made of a superelastic material such as nitinol. The needle cannulae are cold-worked or heat annealed to produce preformed bends ( ) that can be straightened with in passageway ( ) of a coaxial outer cannula ( ) for introduction into the body of a patient. Upon deployment from the outer cannula, the needle cannulae substantially return to their preformed configurations for the introduction or extraction of materials at areas lateral to the entry path of the needle assembly. The plurality of needle cannulae ( ) can be variably arranged or configured for their distal tip portions to attain a desired infusion pattern such as an umbrella shaped array ( ), and/or be staggered axially.