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.

Date of Patent:
May. 02, 2006

Filed:

May. 20, 2003
Applicants:

Stephen J. Tiernan, Palo Alto, CA (US);

Jeong S. Lee, Diamond Bar, CA (US);

Mina W. B. Chow, Campbell, CA (US);

Stephen G. Schaible, Anaheim, CA (US);

Inventors:

Stephen J. Tiernan, Palo Alto, CA (US);

Jeong S. Lee, Diamond Bar, CA (US);

Mina W. B. Chow, Campbell, CA (US);

Stephen G. Schaible, Anaheim, CA (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An apparatus and method for providing a co-extruded, tapered multi-layer shaft. A co-extruded, tapered multi-layer shaft may be fabricated by selecting a first material for the inner layer of the shaft and a second material for the outer layer of the shaft. The first and second materials are then co-extruded by a co-extrusion system including a puller with programmable tapering capabilities. The system forms a hollow tubing having an inner layer and an outer layer, wherein the tubing has the desired tapered characteristics. The result is a tapered tubular shaft having an inner layer and an outer layer.


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