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:
Mar. 21, 2000
Filed:
Jan. 22, 1996
Fernando M Viera, Hialeah, FL (US);
Cordis Corporation, Miami Lakes, FL (US);
Abstract
A catheter guidewire has a relatively flexible distal portion to facilitate the steering of the guidewire through the cardiovascular system of a subject and the capability of the guidewire to reach a deposit region within a relatively tortuous portion of the cardiovascular system. The guidewire also has a relatively stiff proximal portion to facilitate the pushing of the guidewire through the cardiovascular system from an entry point of the subject. For one embodiment, the guidewire includes a corewire and a sleeve secured to the corewire such that the sleeve surrounds a proximal portion of the corewire. The sleeve is formed from a material having a relatively greater stiffness than the material for the corewire. The sleeve may be formed from stainless steel, for example, to provide for a relatively stiff proximal portion of a corewire formed from a material exhibiting superelastic properties, such as a nickel-titanium or Nitinol alloy for example.