Development of an instrumented lower limb orthosis for paraplegia : Trial manufacturing and evaluation of dorsal flexion controlled ankle joint applying MR brake / 対麻痺者用の制御型下肢装具の開発研究 : MRブレーキを応用した背屈制御機構組込み足継手部の試作開発と臨床評価(リハビリテーション2,福祉情報システム1)
- Resource Type
- Journal Article
- Authors
- Akio Nakagawa; Junji Furusho; Maki Ise; Shoji Morimoto; Yasunori Hashimoto; Yasushi Akazawa; 中川 昭夫; 伊勢 眞樹; 古荘 純次; 森本 正治; 橋本 泰典; 赤澤 康史
- Source
- The Proceedings of the JSME Symposium on Welfare Engineering. 2004, :21
- Subject
- dorsal flexion contro4 MR brake
lower limb orthosis
paraplegia
- Language
- Japanese
- ISSN
- 2424-3035
A dorsal flexion controlled lower limb orthosis for paraplegia is developed and evaluated. Dorsal flexion of ankle joint in swing phase is useful to get clearance between foot sole and floor, for easily carrying a lower limb from. aft to fore. To realize this, MR brake is installed in the ankle joint of orthosis which is fan shaped and made of aluminum alloy to move 70 degrees from dorsal to plantar flexion. The MR brake filled with magneto-rheological fluid has an outer loop of MR fluid and flow viscosity is quickly changed by moving permanent magnet block. MR brake is active during the swing phase detected by the foot sole switches. The effect of the MR brake to hold the dorsal flexion in swing phase is proved experimentally.