05069226 is referenced by 309 patents and cites 8 patents.

A catheter guide wire is for use in guiding of a catheter to a destination position in vessels in body and comprises a solid core wire of a Ti-Ni shape memory alloy and an outer jacket covering the core wire. In order to provide a plasticity to one end portion of the core wire, at least one end portion is made of a 45.0-51.0 at % Ni-0.5-5.0 at % Fe-Ti shape memory alloy and is heat treated at 400.degree.-500.degree. C. The end portion is provided with a pseudo elasticity at a temperature about 37.degree. and a plasticity at a temperature below 80.degree. C. Alternatively, the end portion may be made of a 50.3-52.0 at % Ni-Ti alloy and is heat treated at a temperature of 700.degree. C. In order to improve operability of the catheter guide wire, the remaining portion other than the end portion is made of provided with a comparatively high rigidity by a usual Ti-Ni shape memory alloy which is not heat treated. Alternatively, the remaining portion is covered with an inorganic layer. The inorganic layer is a coating and alternatively is a cladding. The solid core wire is covered with a synthetic resin layer to form the catheter guide wire.

Title
Catheter guidewire with pseudo elastic shape memory alloy
Application Number
7/515591
Publication Number
5069226
Application Date
April 27, 1990
Publication Date
December 3, 1991
Inventor
Yasuo Miyano
Shizuoka
JP
Takahiro Kugo
Shizuoka
JP
Kiyoshi Yamauchi
Miyagi
JP
Agent
Hopgood Calimafde Kalil Blaustein & Judlowe
Assignee
Kabushiki Kaisha Terumo
JP
Tokin Corporation
JP
IPC
A61B 5/00
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