Development of an Artificial Myocardium using a Covalent Shape-memory Alloy Fiber and its Cardiovascular Diagnostic Response
Development of an Artificial Myocardium using a Covalent Shape-memory Alloy Fiber and its Cardiovascular Diagnostic Response
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DOI：
10.1109/iembs.2005.1616431
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
Y. Shiraishi;T. Yambe;K. Sekine;N. Masumoto;J. Nagatoshi;S. Itoh;Y. Saijo;Q. Wang;H. Liu;S. Nitta;S. Konno;D. Ogawa;P. Olegario;M. Yoshizawa;A. Tanaka;F. Sato;Y. Park;M. Uematsu;M. Higa;Y. Hori;T. Fujimoto;K. Tabayashi;H. Sasada;M. Umezu;D. Homma
中科院分区：
文献类型：
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作者：
Y. Shiraishi;T. Yambe;K. Sekine;N. Masumoto;J. Nagatoshi;S. Itoh;Y. Saijo;Q. Wang;H. Liu;S. Nitta;S. Konno;D. Ogawa;P. Olegario;M. Yoshizawa;A. Tanaka;F. Sato;Y. Park;M. Uematsu;M. Higa;Y. Hori;T. Fujimoto;K. Tabayashi;H. Sasada;M. Umezu;D. Homma
作者一直在开发一种新设计的全植入式人工心肌，该人工心肌使用共价形状记忆合金纤维（Biorereg，Toki Corporation），其附着在心室壁上，也能够支持心室的自然收缩。该机械系统包括一个由钛镍合金制成的收缩辅助装置。并利用合金的马氏体相变现象实现了装置的生理运动。合金丝的直径可以从45 μ m至250 μ m中选择。在这项研究中，150 μ m的纤维的基本特性进行了检查，以设计复杂的机电心肌。在脉动驱动条件（0.4W，1Hz）下，由纤维产生的应力为400gf。因此，采用生物金属形状记忆合金纤维可以实现有效的辅助
The authors have been developing a newly-designed totally-implantable artificial myocardium using a covalent shape-memory alloy fibre (Biometalreg, Toki Corporation), which is attached onto the ventricular wall and is also capable of supporting the natural ventricular contraction. This mechanical system consists of a contraction assistive device, which is made of Ti-Ni alloy. And the phenomenon of the martensitic transformation of the alloy was employed to achieve the physiologic motion of the device. The diameter of the alloy wire could be selected from 45 to 250 mum. In this study, the basic characteristics of the fiber of 150 mum was examined to design the sophisticated mechano-electric myocardium. The stress generated by the fiber was 400 gf under the pulsatile driving condition (0.4W, 1 Hz). Therefore it was indicated that the effective assistance might be achieved by using the Biometal shape-memory alloy fiber