Patent ID: 7942832

Claim:
A medical guide wire comprising a core wire having a distal portion, and a cover portion formed of a resin covering at least said distal portion of said core wire, said guide wire provided with a distal shape portion having a curved portion, the curved portion having a distal end and a proximal end, the curved portion continuously curving from the distal end of the curved portion to the proximal end of the curved portion, and the distal shape portion possessing an opening angle of 0° to 30°, wherein said distal portion of said core wire comprises a tapered portion continuously varied in outside diameter, and a distal flexible portion provided on the distal side of said tapered portion and more flexible than said tapered portion, and said tapered portion possessing a wire diameter variation rate of 40 to 55%, and wherein said tapered portion has a tapered start portion at which an increase in the outside diameter toward the proximal side is started and a tapered end portion at which the increase in the outside diameter ends, and said start portion is located at an apex of said curved portion of said distal shape portion.