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1998 Fiscal Year Final Research Report Summary

Development of Implantable FES Ssystem using Custom Integrated Circuit

Research Project

Project/Area Number 09558113
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Biomedical engineering/Biological material science
Research InstitutionSaitama University

Principal Investigator

TAKAHASHI Khorou  Saitama Univ.Faculty of Eng.Professor Univ., Associate Professor, 工学部, 教授 (10124596)

Co-Investigator(Kenkyū-buntansha) ISHIKAWA Seiichi  Nihon Denki Medical Div.Section Chief, 医療機器事業部, 課長
HANDA Yasunobu  Tohoku univ.School of Med.Professor, 医学部, 教授 (00111790)
HOSHIMIYA Nozomu  Tohoku Univ.Faculty of Eng.Professor, 工学部, 教授 (50005394)
Project Period (FY) 1997 – 1998
KeywordsFunctional Electrical Stimulation / Custom Integrated Circuit / Restoration of Motor Function / Implantable System / FES / External Power Supply / FPGA / FPGA
Research Abstract

An implantable stimulation unit for multichannel functional electrical stimulation (FES) system applied to the restoration of motor functions has been developed. The stimulation unit implanted in the body is externally controlled and powered by an encoded carrier radio frequency of 1.23 MHz and a continuous frequency of 123 kHz, respectively. Up to 16 independently controlled stimulus output channels are provided, with output channel selection and stimulus pulse amplitude controlled externally by the information transmitted in a packet style. The information to check operating states of the implanted unit is also returned. This bi-directional communication system can increases reliability and safety of the implantable FES system. Miniaturization of the implanted unit has been realized by using MCM (Multi-Chip-Module) for analog circuit and the custom integrated circuit (IC) for digital circuit, respectively. The custom IC has been constructed by standard cell method, and 1.2 mum CMOS technology using 2 metal layers. The circuit was designed with the logic theory CAD tool by Cadence, the simulator by VerilogHDL, and the auto layout tool by CellEnsemble. The fabricated IC was constituted with the sells of 452 and the gates of 1347.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 高橋幸郎・星宮望他: "体外電力供給方式による埋め込み型機能的電気刺激装置" 医用電子と生体工学. 37巻1号(印刷中). (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 秋山卓郎、高橋幸郎他: "埋め込み型機能的電気刺激装置のためのカスタム集積回路の設計" 第38回日本ME学会大会論文集. 37巻(印刷中). (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Takahashi, N.Hoshimiya et al.: "Extenally Powered Implantable Functional Electrical Stimulation System" JJME. Vol.37, No.1. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Akiyama, K.Takahashi et al.: "Design of Custo m Integrated Circuit for Implantable Functional Electrical Stimulation System" The 38th Symp.of Japanese Med.Electronic Biolog.Eng.(1999)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-12-08  

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