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Development of spinal implant rod made of Ti-29Nb-13Ta-4.6Zr

Development of spinal implant rod made of Ti-29Nb-13Ta-4.6Zr. Spinal fixation. Plug. Rod. Screw. a). b). c). d). Fig. The spinal fixation method for treatment of scoliosis, a) picture of women with scoliosis ,

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Development of spinal implant rod made of Ti-29Nb-13Ta-4.6Zr

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  1. Development of spinal implant rod made of Ti-29Nb-13Ta-4.6Zr

  2. Spinal fixation Plug Rod Screw a) b) c) d) Fig. The spinal fixation method for treatment of scoliosis, a) picture of women with scoliosis , b) X-Ray of Curve before surgery, c) Fixation during surgery, d)X-Ray after surgery

  3. Collaborative project Showa Ika Kogyo Co., Ltd Europe (Prof. Steib) Project management Patent standerd Medical doctors Tohoku University America (Dr. Burger) Basic study Comments and needs Animal experiment

  4. 1100 Study in Tohoku Univ. 1000 900 Maximum Cyclic Stress,σmax/MPa 800 Improvement of fatigue property Process 1 Solution treatment → aging treatment Process 2 Cold rolling → aging treatment Process 3 Swaging → aging treatment Ti64 rod (Conventional material of implant rod) 700 600 500 103 104 105 106 107 108 Number of Cycles to Failure，Nf Fig. S-N curves of Ti-29Nb-13Ta-4.6 subjected to various thermo-mechanical treatment in air.

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