Computer assisted orthosis design system for malformed ears - Automatic shape modification method for preventing excessive corrective force

Akihiko Hanafusa, T. Isomura, Y. Sekiguchi, H. Takahashi, T. Dohi

研究成果: Conference contribution

抄録

Most malformed ears of neonates can be treated by mounting a suitably shaped orthosis. However, it needs much experience to make a orthosis that produces adequate corrective force. Especially, excessive force may cause a decubitus-like inflammation on the auricle. We are studying computer assisted system to support the orthosis design. And we have already developed fundamental design and manufacturing system. This paper describes automatic orthosis shape modification method to prevent the excessive corrective force using three dimensional finite element method. Incremental method inserting the orthosis in the auricle is used to handle non-linear material property of the auricle. In each insertion step, corrective force of every nodal point of the orthosis is calculated. The shape is modified by canceling the insertion of nodal point where excessive contact force is produced. The auricle and the orthosis were modeled by triangular shell elements and beam elements respectively. Finally the sample result of analysis showed that the orthosis modified by the method can reduce maximum force compared to that of the original shape.

元の言語English
ホスト出版物のタイトルAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
編集者J.D. Enderle
ページ1976-1978
ページ数3
3
出版物ステータスPublished - 2000
外部発表Yes
イベント22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Chicago, IL, United States
継続期間: 2000 7 232000 7 28

Other

Other22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society
United States
Chicago, IL
期間00/7/2300/7/28

Fingerprint

Mountings
Materials properties
Finite element method

ASJC Scopus subject areas

  • Bioengineering

これを引用

Hanafusa, A., Isomura, T., Sekiguchi, Y., Takahashi, H., & Dohi, T. (2000). Computer assisted orthosis design system for malformed ears - Automatic shape modification method for preventing excessive corrective force. : J. D. Enderle (版), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (巻 3, pp. 1976-1978)

Computer assisted orthosis design system for malformed ears - Automatic shape modification method for preventing excessive corrective force. / Hanafusa, Akihiko; Isomura, T.; Sekiguchi, Y.; Takahashi, H.; Dohi, T.

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. 版 / J.D. Enderle. 巻 3 2000. p. 1976-1978.

研究成果: Conference contribution

Hanafusa, A, Isomura, T, Sekiguchi, Y, Takahashi, H & Dohi, T 2000, Computer assisted orthosis design system for malformed ears - Automatic shape modification method for preventing excessive corrective force. : JD Enderle (版), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. 巻. 3, pp. 1976-1978, 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Chicago, IL, United States, 00/7/23.
Hanafusa A, Isomura T, Sekiguchi Y, Takahashi H, Dohi T. Computer assisted orthosis design system for malformed ears - Automatic shape modification method for preventing excessive corrective force. : Enderle JD, 編集者, Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. 巻 3. 2000. p. 1976-1978
Hanafusa, Akihiko ; Isomura, T. ; Sekiguchi, Y. ; Takahashi, H. ; Dohi, T. / Computer assisted orthosis design system for malformed ears - Automatic shape modification method for preventing excessive corrective force. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. 編集者 / J.D. Enderle. 巻 3 2000. pp. 1976-1978
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