Patent ID: 7632237
Filing Date: 2009-12-15
Classification: A61M,Y10T

Abstract:
1. A guide wire comprising: a distal end side portion having a proximal end and formed of a first metallic material, a proximal end side portion having a distal end and formed of a second metallic material higher in rigidity than said first metallic material, and an intermediate portion provided between said distal end side portion and said proximal end side portion, having a proximal end and a distal end, said intermediate portion being formed of a metallic material mixture of said first metallic material and said second metallic material, wherein said intermediate portion comprises an integral gradient composition portion having a predetermined length in which a weight ratio of said first metallic material in the metallic material mixture decreases and a weight ratio of said second metallic material in the metallic material mixture increases along the length of said intermediate portion, from the distal end side portion toward the proximal end side portion, wherein said distal end of said intermediate portion is joined to a terminal end of said proximal end of said distal end side portion and said proximal end of said intermediate portion is joined to a terminal end of said distal end of said proximal end side portion such that said distal end side portion and said proximal end side portion do not overlap, said intermediate portion comprising a sintered cylindrical body formed of a powder of said first metallic material and a powder of said second metallic material.