An active guide wire with shape memory alloy bending actuator fabricated by room temperature process
An active guide wire with shape memory alloy bending actuator fabricated by room temperature process
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DOI：
10.1016/s0924-4247(02)00021-3
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发表时间：
2002-04-01
影响因子：
4.6
通讯作者：
Esashi, M
中科院分区：
文献类型：
--
作者：
Mineta, T;Mitsui, T;Esashi, M
已开发出外径为0.5毫米的主动导丝。该导丝结构简单、灵活，由蜿蜒形状的镍钛形状记忆合金（SMA）弯曲致动器和覆盖有薄聚氨酯管的偏置线圈组成。它可以通过电流加热而向一个方向弯曲，并通过偏置线圈恢复。在水中弯曲导丝需要大电流，但弯曲角度可能超过 60 度。导丝在水中的表面温升小于5℃。 SMA弯曲执行器是由平坦的SMA片材光制成的，该片材在被存储为曲线形状后被展平。为了在 SMA 转变温度以下制造执行器。还开发了室温光制造工艺。 2002 Elsevier Science B.V. 保留所有权利。
An active guide wire of 0.5 mm outer diameter has been developed. The guide wire has a simple and flexible structure that consists of a NiTi shape memory alloy (SMA) bending actuator with meandering shape and a bias coil that is covered with thin polyurethane, tube. It can bend to one-direction by heating with electric current and is restored by the bias coil. Large current was necessary to bend the guide wire in water, however, it could bend over 60degrees. The rise of the surface temperature of the guide wire was less than 5 degreesC in water.The SMA bending actuator has been photo-fabricated from a flatten SMA sheet which was spread flat after it was memorized in curve-shape. In order to fabricate the actuator below the transition temperature of the SMA. a room temperature photo-fabrication process has been also developed. 2002 Elsevier Science B.V. All rights reserved.