Niti-type medical guide wire and method of producing the same
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United States of America Patent
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Jan 21, 2003
Grant Date -
N/A
app pub date -
Jul 6, 2000
filing date -
Nov 6, 1998
priority date (Note) -
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Importance
Abstract
A medical guidewire comprised of an NiTi-based alloy having a high elasticity over a wide range of strain, excellent straightness, and preferable shape and characteristics of a stress-strain curve in a tensile test. The wire is obtained by applying a predetermined tension to a cold drawn NiTi-based alloy wire and mechanical straightening it under conditions of a predetermined torsional shear strain and temperature and shows superior pushability, torque transmission, and reinsertability as a medical guidewire, so is preferable for a catheter guidewire, endoscope guidewire, etc.
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