Patent ID: 9295814
Filing Date: 2016-03-29
CPC Classification: A61M,B21F

Claim Text:
1. A guide wire comprising: a first wire disposed on the distal side of said guide wire; and a second wire disposed on the proximal side from said first wire, said second wire having an elastic modulus higher than an elastic modulus of said first wire; wherein said first wire and said second wire are directly joined to each other coaxially by welding; and a projection formed where said first wire and said second wire are joined to each other by welding projects outwardly in a radial direction, said projection being formed in a circular cross-sectional shape by deformation of a proximal end of the first wire and a distal end of the second wire; said second wire has, in a vicinity of the projection, a smaller cross-sectional area portion having a cross-sectional area smaller than a cross-sectional area of proximal endmost portion of said first wire including projection, and said smaller cross-sectional area portion of said second wire has a portion with a rigidity that is substantially equal to a rigidity of the proximal end of said first wire.