Abstract: Super-elastic titanium alloy for a living body consisting essentially of: Niobium (Nb) as an element to stabilize ?-phase: from 5 to 40 mol %; at least one element selected from the group consisting of gold (Au), platinum (Pt), palladium (Pd) and silver (Ag): Au: from over 0 to 10 mol %, Pt: from over 0 to 10 mol %, Pd: from over 0 to 10 mol %, Ag: from over 0 to 10 mol %, wherein a total thereof being up to 20 mol %; and balance being titanium and inevitable impurities.

Abstract: A super-elastic titanium alloy for medical use consisting essentially of: a molybdenum (Mo) as a ? stabilizer element of titanium (Ti): from 2 to 12 at %; an ? stabilizer element of the titanium (Ti): from 0.1 to 14 at %; and the balance being titanium (Ti) and inevitable impurities. The ? stabilizer element is at least one element selected from the group consisting of aluminum (Al), gallium (Ga) and germanium (Ge).

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.

Abstract: A device which is installed onto an ingrown nail of a human toe to correct the ingrown nail, includes a support member affixed to the ingrown nail, and a correcting member supported by the support member and effecting force on the ingrown nail toward the correcting direction for the ingrown portion of the nail. The correcting member may be formed of a superelastic material which is shape-memory-treated to memorize a first shape, and which is deformed to a second shape different from the first shape so as to be installed onto a surface of the ingrown nail of the human toe in the second shape.