Micro catheter using Ti-Mo-Sn shape memory alloy tube

山口清; SUTOU Yuji; TAKAGI Takamitsu; MAESHIMA Takashi; NISHIDA Minoru

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Micro catheter using Ti-Mo-Sn shape memory alloy tube

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Recently, minimally invasive surgeries using guide-wire, catheter, stent etc. have spread rapidly as the diagnosis and the medical treatment for a cancer, a disease in a circulatory organ etc. Currently, further maneuverability and functionability of those devices are strongly desired in order to be used widely and safely. Although Ti-Ni shape memory alloys have been used in medical devices such orthodontic wire, guide-wire, it has been suspected that Ni is allergenic and carcinogenic to the human body. Thus the development of Ni-free shape memory alloys has been strongly required. Recently, several Ni-free beta-titanium alloys such as Ti-Mo-Al, Ti-Mo-Ga, Ti-Nb-Al have been developed as new-type shape memory alloys. We have been studying Ti-Mo based beta-titanium alloys and Ti-Mo-Sn alloy has constantly super elasticity of 3%.The purpose of present study is to propose the micro catheter with thin wall and high flexibility using To-Mo-Sn alloys tube on the basis of its mechanical properties.

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来源
《材料与冶金学报》 |2005年第2期|120-120|共1页
作者
山口清; SUTOU Yuji; TAKAGI Takamitsu; MAESHIMA Takashi; NISHIDA Minoru;
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作者单位

日本东北大学;

Tohoku University;

Biomedical Engineering Research Organization 2-1 Seiryo-machi;

Aoba-ku;

Sendai 980-8575;

Japan;

Management of Science & Technology;

Graduate School of Engineering;

Tohoku University;

Aoba-yama 6-6-04;

Sendai980-8579;

Japan;

Department of Material Science and Engineering;

Kumamoto University;

Kumamoto 860-8555;

Japan;

Department of Material Science and Engineering;

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原文格式 PDF
正文语种 chi
中图分类 TG139.6;
关键词
Ti-Mo-Sn形状记忆合金管; 微导尿管; 应用; 机械特性;

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Micro catheter using Ti-Mo-Sn shape memory alloy tube

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