Externally powered implantable FES system

K. Takahashi, M. Kikuchi, S. Takeuchi, N. Hoshimiya, H. Mastuki, Y. Handa

Research output: Contribution to conferencePaperpeer-review

4 Citations (Scopus)


We have developed an implantable stimulation unit for multichannel functional electrical stimulation (FES) system applied to the restoration of motor functions. The stimulation unit implanted in the body is externally controlled and powered by an encoded carrier radio frequency of 1 MHz and a continuous frequency of 100 kHz, respectively. A new type of RF coil utilizing amorphous magnetic fibers was introduced to realize highly efficient of power transmission. Up to 16 independently controlled stimulus output channels are provided, with output channel selection, stimulus pulse amplitude and stimulus pulse rate controlled externally by the packet transmission method. A constant voltage stimulus pulse is generated with the D/A converter in the circuit of the implanted unit.

Original languageEnglish
Number of pages6
Publication statusPublished - 1995
EventProceedings of the 1995 6th International Symposium on Micro Machine and Human Science - Nagoya, Jpn
Duration: 1995 Oct 41995 Oct 6


ConferenceProceedings of the 1995 6th International Symposium on Micro Machine and Human Science
CityNagoya, Jpn


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