| 摘要 |
PROBLEM TO BE SOLVED: To provide a medical guide wire, which is a medical guide wire comprising a body and a front end configured integrally with a titanium-nickel alloy wire as a core material, wherein the body is high in elasticity, and is excellent in pushing properties and torque transmission properties as its straightness is excellent; and the front end has repetition reshaping properties and sufficient flexibility shape preservation properties, and is excellent in operability such as vascular following properties and vascular selectivity or the like.SOLUTION: A medical guide wire includes a body and a front end configured integrally with a titanium-nickel alloy wire as a core material. The titanium-nickel alloy wire is improved in material properties and straightness by mechanical and correctional processing without the need of heat treatment after cold wire drawing processing. The medical guide wire can be obtained which does not exhibit stress-induced martensitic transformation with high elasticity in a wide strain range, and has repetition reshaping properties and form preservation properties with various kinds of excellent operability by means of heat treatment only of the front end in the range of temperature 500-650°C. |
