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IJAT Vol.10 No.6 pp. 958-964
doi: 10.20965/ijat.2016.p0958
(2016)

Paper:

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Laser Fabrication of Jagged-Shaped Stainless Steel Microneedle Imitating Mosquito’s Maxilla

Yasuhiro Hara*,†, Masahiro Yamada**, Chikako Tatsukawa*, Tomokazu Takahashi**, Masato Suzuki**, and Seiji Aoyagi**

*Organization for Research and Development of Innovative Science and Technology, Kansai University
3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan

†Corresponding author,

**Faculty of Engineering Science, Department of Mechanical Engineering, Kansai University
3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan

Received:
May 9, 2016
Accepted:
September 13, 2016
Published:
November 4, 2016
Creative Commons License
Keywords:
laser machining, femtosecond laser, stainless steel microneedle, imitating mosquito
Abstract
The demand for the development of low-invasive injection needles or needle-shaped tools for applications in medical practices, such as blood sampling and blood sugar level tests, are growing. We observed a mosquito’s penetration motions and fabricated low-invasive microneedles from 30-μm-thick stainless steel foil, imitating a pair of the mosquito’s maxillae. In our earlier studies, we attempted to fabricate needle tips with jagged portions by using a specially ordered machine tool and sharpening them by electrolytic etching, but found it difficult to maintain the needle tips in a jagged shape. However, in this study we successfully fabricated microneedles (70 μm in width and 2.2 mm in length) with three-dimensionally sharpened tips (angled at 15° on the upper surface and sides) by machining 30-μm-thick stainless steel foil by femtosecond laser. Femtosecond laser machining can be applied to any type of material and can fabricate any desired three-dimensional structures by changing the angles at which the materials are set.
Cite this article as:
Y. Hara, M. Yamada, C. Tatsukawa, T. Takahashi, M. Suzuki, and S. Aoyagi, “Laser Fabrication of Jagged-Shaped Stainless Steel Microneedle Imitating Mosquito’s Maxilla,” Int. J. Automation Technol., Vol.10 No.6, pp. 958-964, 2016.
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