Patent ID: 8968215
Filing Date: 2015-03-03
Classification: A61M,B23K,Y10T

Abstract:
1. 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; coating at least a part of the first wire and the second wire with a first polymer cover layer while heating the first wire and the second wire, the first polymer cover layer including a distal-side cover layer which covers the first wire and a proximal-side cover layer which covers the second wire, said distal-side and proximal-side cover layers being separate and distinct; welding the first wire to the second wire at a welded portion; and coating an outer periphery of the welded portion with a second polymer cover layer being a different material from the first polymer cover layer while the welded portion is not heated, wherein the second polymer cover layer is made from a silicone resin, the distal-side cover layer is disposed on the distal side of the second polymer cover layer without an axial gap between the distal-side cover layer and the second polymer cover layer, and the proximal-side cover layer is disposed on the proximal side of the second polymer cover layer without an axial gap between the proximal-side cover layer and the second polymer cover layer.