Shape Memory Alloy Artificial Muscles for Treatments of Fecal Incontinence

• Luo Yun

  Institute of Fluid Science, Tohoku University

• Takagi Toshiyuki

  Institute of Fluid Science, Tohoku University

• Amae Shintaro

  Graduate School of Medicine, Tohoku University

• Wada Motoshi

  Graduate School of Medicine, Tohoku University

• Yambe Tomoyuki

  Institute of Development, Aging and Cancer, Tohoku University

• Kamiyama Takamichi

  Graduate School of Medicine, Tohoku University

• Nishi Kotaro

  Graduate School of Medicine, Tohoku University

• Okuyama Takeshi

  Institute of Fluid Science, Tohoku University

• Komoriya Toshihiko

  Institute of Fluid Science, Tohoku University

• Matsuki Hidetoshi

  Graduate School of Mechanical and Electrical Engineering, Tohoku University

抄録

Shape memory alloys (SMAs) have the features of large force-to-weight ratio and large deformation, are considered suitable for actuator uses. This paper describes the applications of an SMA material with two-way shape memory as artificial muscles for the treatment of fecal incontinences. Two designs of the proposed artificial sphincters are presented; one for a complete replacement of the anal sphincter and the other as an auxiliary sphincter to assist the puborectal muscles for maintaining fecal continence. Their functional evaluations have been conducted through fundamental experiments on the thermal responses and the mechanical deformation. The functionality of both was confirmed by in vitro experiments. The first design, the artificial anal sphincter was subjected to animal experiments for up to 4 weeks. Satisfactory results in respects of the biofunctionality of the SMA artificial sphincter imply its potential for practical uses.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 45 (2), 272-276, 2004

  公益社団法人 日本金属学会

キーワード

• shape memory alloys (SMAs)
• artificial muscles
• fecal incontinence
• puborectal muscles
• sphincter

詳細情報

• CRID: 1390282679228348800
• NII論文ID: 10012643091
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.45.272
• COI: 1:CAS:528:DC%2BD2cXjt1OqsLo%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6865188
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6865188
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/45/2/45_2_272/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可