Patent ID: 7762984
Filing Date: 2010-07-27
Classification: A61M

Abstract:
1. A catheter comprising: a distal shaft; a proximal shaft having a distal portion inserted and fixed in the distal shaft; the distal shaft comprising a guide wire lumen and a distal shaft lumen, the guide wire lumen extending in a longitudinal direction of the distal shaft and communicating with a guide wire insertion port at a proximal portion of the distal shaft, the distal shaft lumen extending in the longitudinal direction of the distal shaft and communicating with a proximal shaft lumen formed inside the proximal shaft; the proximal shaft comprising a main body portion, a distal portion smaller in outer dimension than the main body portion and entering into the distal shaft lumen, and a proximal shaft inclined portion located between the main body portion and the distal portion, the proximal shaft inclined portion possessing an inclined surface; the distal shaft lumen possessing a lumen change portion that is reduced in lumen cross-section in a direction toward a distal side of the distal shaft lumen, the lumen change portion possessing an inclined surface; and the inclined surface of the proximal shaft inclined portion and the inclined surface of the lumen change portion axially overlapping and directly abutting on each other so that a pushing force applied to the main body portion of the proximal shaft is transmitted to the distal shaft through the abutting proximal shaft inclined portion and lumen change portion, wherein the lumen change portion is disposed proximally of a proximal-most portion of the guide wire insertion port, and wherein the proximal shaft, including the inclined portion, is formed of metal.