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. 16, 2004
Filed:
Apr. 07, 2000
Shogo Miki, Suita, JP;
Kohei Fukaya, Settsu, JP;
Takuji Nishide, Settsu, JP;
Masato Hashiba, Settsu, JP;
Ryoji Nakano, Settsu, JP;
Hiromi Maeda, Uji, JP;
Kaneka Corporation, Osaka, JP;
Abstract
It is an object of the present invention to provide a balloon catheter in which the inner tube is prevented from slackening after balloon inflation, improving the rewrapping of the balloon, discontinuity in the rigidity of the joined portions of the outer tube and the balloon is lessened, which prevents breakage, and the catheter advances through blood vessels better and passes more easily through narrow segments, preventing the catheter from “accordioning” and enhancing insertion force transmission. The balloon catheter pertaining to the present invention has a catheter shaft ( ) with a double-tube structure comprising an outer tube ( ) and an inner tube ( ), and a balloon ( ) disposed at the distal end portion of this catheter shaft ( ). A guide tube ( ) having an outside diameter smaller than the inside diameter of the outer tube ( ) and having an inside diameter larger than the outside diameter of the inner tube ( ) is disposed at least at the distal end portion of the outer tube ( ) so as to form a double-tube with the outer tube ( ), and the inner tube ( ) is not fixed, but passes through the interior of the guide tube ( ) in the axial direction.