Patent ID: 7918947
Filing Date: 2011-04-05
Classification: A61M,B21F,Y10T

Abstract:
1. A method of making a guide wire by using a heat mold device in which a guide wire is formed from a metallic coiled wire which has an arcuated portion provided at a predetermined portion of said guide wire by means of a thermal treatment so as to serve as a shape-formed configuration; said heat mold device comprising: a tabulate metallic mold body, an outer surface of which has a mold groove forming an open-ended portion at an elevational side of said metallic mold body; a lid body placed on said outer surface of said metallic mold body; said metallic mold body being made from a material having both thermal expansion coefficient and thermal conductivity which are the same as said metallic coiled wire has; and said lid body having a lid plate to be in contact with said outer surface of said metallic mold body, and further having a pushing member which is slidably fit into said metallic mold body to urgingly push said metallic mold body against said lid plate so as to hold said metallic mold body in place; said method of making said guide wire by using said heat mold device comprising steps of: inserting a safety wire into said metallic coiled wire; fixedly securing a front end of said safety wire to one end of said metallic coiled wire which is to be shaped as a shape-formed configuration, while at the same time, freely setting another portion of said safety wire secured to said metallic coiled wire with the other portion extended outside said metallic coiled wire; shaping said metallic coiled wire within said metallic mold body by means of a thermal treatment; thereafter severing said safety wire at its portion extended outside said metallic coiled wire; and fixedly securing said severed portion of said safety wire to the other end of said metallic coiled wire.