Realistic imitation of mosquito's proboscis: Electrochemically etched sharp and jagged needles and their cooperative inserting motion
Realistic imitation of mosquito's proboscis: Electrochemically etched sharp and jagged needles and their cooperative inserting motion
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DOI：
10.1016/j.sna.2010.02.010
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发表时间：
2011-01-01
影响因子：
4.6
通讯作者：
Kanzaki, Tsutomu
中科院分区：
文献类型：
--
作者：
Izumi, Hayato;Suzuki, Masato;Kanzaki, Tsutomu
针对低侵入性医疗的应用，提出了一种真实感的蚊子喙仿真方法。硅针是电化学蚀刻，使三维尖锐的尖端与精细光滑的表面。锯齿状的柄部形状是通过深反应离子蚀刻（DRIE）加工的。制作了由中心直针和两个外锯齿针组成的组合针，分别模仿蚊子的唇和两个上颌。通过对三根针分别施加压电驱动器，实现了三根针模仿蚊子的协同运动。通过实验证实了这些针协同插入的有效性。考虑到实际的医疗应用，还开发了具有三维尖锐尖端的可生物降解聚合物针。基于微成型的制造过程如下：通过在硅尖针上电镀镍负腔，向其注入熔融聚合物，最后使用失模技术释放镍负腔。实验证明了尖端易于插入的有效性。(c)2010 Elsevier B.V.保留所有权利。
Aiming at the use in low-invasive medical treatments, this paper proposes a realistic imitation of mosquito's proboscis. A silicon needle is electrochemically etched, making the three-dimensionally sharp tip with finely smooth surface. The jagged shank shape is machined by a deep reactive ion etching (DRIE). The combined needles comprising a central straight needle and two outer jagged needles are fabricated, imitating a labrum and two maxillas of the mosquito, respectively. The cooperative motion of the three needles imitating the mosquito's motion is realized by applying PZT actuators independently to all the needles. The effectiveness of inserting these needles cooperatively was experimentally confirmed. Considering practical medical application, a biodegradable polymer needle with three-dimensionally sharp tip is also developed. The fabrication process based on micromolding is as follows: a nickel negative cavity is made by electroplating on a silicon sharp needle, to which melted polymer is injected, and it is finally released using a lost molding technique. The effectiveness of sharp tip for easy insertion was experimentally proven. (c) 2010 Elsevier B.V. All rights reserved.