Patent ID: 8348859

Claim:
A method of manufacturing a guide wire comprising: providing a first wire and a second wire, the first wire and the second wire being made from different materials; welding the first wire to the second wire at a welded portion; and coating an outer periphery of the welded portion with a polymer cover layer while the welded portion is not heated; wherein a proximal-side cover layer is disposed on a proximal side from the polymer cover layer without an axial gap between the polymer cover layer and the proximal-side cover layer, the polymer cover layer and the proximal-side cover layer do not axially overlap one another, a distal-side cover layer is disposed on the distal side from the polymer cover layer without an axial gap between the polymer cover layer and the distal-side cover layer, and the polymer cover layer and the distal-side cover layer do not axially overlap one another.