Patent ID: 7753859
Filing Date: 2010-07-13
Classification: A61M

Abstract:
1. A guide wire comprising: a core wire comprising a distal end section and a proximal end section, a portion of the core wire between the distal end section and the proximal end section being a tapered section in which an outer diameter of the tapered portion varies and is reduced at a distal part of the tapered portion as compared to a proximal part of the tapered portion; a resin coating layer covering an outer periphery of the distal end section of the core wire; an annular member encircling at least a portion of the tapered section and positioned entirely on a proximal side of the resin coating layer; the tapered section of the core wire extending distally beyond a distal end of the annular member; the tapered section of the core wire extending proximally beyond a proximal end of the annular member; the annular member being separate from the resin coating layer and possessing a distalmost end face joined to a proximalmost end face of the resin coating layer; the annular member possessing a thickness that varies along its longitudinal extent, with the thickness of the annular member being less at its proximal end than at its distal end; and the outer diameter of the distal end of the annular member being equal to the outer diameter of the proximal end of the resin coating layer.