Development of medical guide wire of Cu-Al-Mn-base superelastic alloy with functionally graded characteristics.

Development of medical guide wire of Cu-Al-Mn-base superelastic alloy with functionally graded characteristics.
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DOI：
10.1002/jbm.b.10079
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发表时间：
2004-04
期刊：
Journal of biomedical materials research. Part B, Applied biomaterials
影响因子：
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通讯作者：
Y. Sutou;T. Omori;A. Furukawa;Yukinori Takahashi;R. Kainuma;K. Yamauchi;S. Yamashita;K. Ishida
Y. Sutou;T. Omori;A. Furukawa;Yukinori Takahashi;R. Kainuma;K. Yamauchi;S. Yamashita;K. Ishida
中科院分区：
其他
文献类型：
--
作者：
Y. Sutou;T. Omori;A. Furukawa;Yukinori Takahashi;R. Kainuma;K. Yamauchi;S. Yamashita;K. Ishida

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利用铜铝锰基合金研制了一种新型的医用导丝，它具有从顶端到端部的功能梯度硬度。通过控制晶粒度，铜铝锰基合金尖端的超弹性(SE)得到显著改善，而钢丝的端部通过200-400℃左右的时效贝氏体相变而硬化。因此，导丝的顶端表现出超弹性，其端部具有高的刚性。该功能梯度导丝具有优良的可推性和扭转性，优于镍钛导丝。
A new type of medical guide wire with functionally graded hardness from the tip to the end was developed with the use of Cu-Al-Mn-based alloys. The superelasticity (SE) of the Cu-Al-Mn-based alloys in the tip is drastically improved by controlling the grain size, whereas the end of the wire is hardened using bainitic transformation by aging at around 200-400 degrees C. Therefore, the tip of the guide wire shows a superelasticity and its end has high stiffness. This guide wire with functionally graded characteristics shows excellent pushability and torquability, superior to that of the Ni-Ti guide wire.