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:
Jul. 23, 2002

Filed:

Jul. 20, 2000
Applicant:
Inventors:

Tomihisa Kato, Seto, JP;

Satoshi Nagano, Seto, JP;

Takashi Kato, Seto, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 5/00 ; A61M 2/500 ;
U.S. Cl.
CPC ...
A61B 5/00 ; A61M 2/500 ;
Abstract

A medical guide wire which is to ensure a good maneuverability when inserting its front end portion into blood vessels while turning the front end portion around its axis so as to provide an improved remedial treatment with patients. For this purpose, a core elongation has a torsional rigidity coefficient of 16 or less in terms of K ×10 . A helical spring has a helical diameter-to-line diameter ratio in the range of 2.5˜3.5. Where the torsional rigidity coefficient is a divided value of (a maximum torsional stress based on a torsional moment to which the core member is subjected)/(the torsional moment to which the core member is subjected). The helical diameter-to-line diameter ratio is a value of (a mean value of outer and inner diameters of the helical spring)/(a line element diameter of the helical spring).


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