| Presentation | 2018-10-20 Fundamental study on equivalent circuit model for electrochemical characterization of implantable porous electrode used in retinal prosthesis with suprachoroidal transretinal stimulation Shuhei Nomura, Hiroyuki Tashiro, Yasuo Terasawa, Jun Ohta, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Visual prothesis is a medical device that restores lost visual function via electrical stimulation to the visual nervous system using metal stimulation electrodes. Excessive and chronic stimulation via the implanted electrode causes safety and durability problems such as damage to the surrounding tissue and elution of the electrodes. To secure the long-term safety of the stimulation pulses, it is important to understand the changes of the electrode characteristics in vivo. In this study, we implanted a porous stimulation electrode array in a rabbit’s eyeball and obtained electrochemical impedance of active and inactive electrodes. From the result of equivalent circuit analysis, the characteristics of the porous electrode in the living body can be described by a simple equivalent circuit model containing solution resistances and electric double layer capacities. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Visual prosthesis / Stimulation electrode / Electrochemical impedance spectroscopy / Equivalent circuit analysis |
| Paper # | MBE2018-31 |
| Date of Issue | 2018-10-13 (MBE) |
| Conference Information | |
| Committee | NC / MBE |
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| Conference Date | 2018/10/19(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yutaka Hirata(Chubu Univ.) / Masaki Kyoso(TCU) |
| Vice Chair | Hayaru Shouno(UEC) / Taishin Nomura(Osaka Univ.) |
| Secretary | Hayaru Shouno(Nagoya Univ.) / Taishin Nomura(NAIST) |
| Assistant | Keiichiro Inagaki(Chubu Univ.) / Takashi Shinozaki(NICT) / Takumi Kobayashi(YNU) / Ｙａｓｕｙｕｋｉ Ｓｕｚｕｋｉ(Osaka Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Neurocomputing / Technical Committee on ME and Bio Cybernetics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Fundamental study on equivalent circuit model for electrochemical characterization of implantable porous electrode used in retinal prosthesis with suprachoroidal transretinal stimulation |
| Sub Title (in English) | |
| Keyword(1) | Visual prosthesis |
| Keyword(2) | Stimulation electrode |
| Keyword(3) | Electrochemical impedance spectroscopy |
| Keyword(4) | Equivalent circuit analysis |
| 1st Author's Name | Shuhei Nomura |
| 1st Author's Affiliation | Teikyo University/ Kyushu University(Teikyo Univ/ Kyushu Univ) |
| 2nd Author's Name | Hiroyuki Tashiro |
| 2nd Author's Affiliation | Kyushu University(Kyushu Univ) |
| 3rd Author's Name | Yasuo Terasawa |
| 3rd Author's Affiliation | NIDEK CO., LTD.(NIDEK) |
| 4th Author's Name | Jun Ohta |
| 4th Author's Affiliation | Nara Institute of Science and Technology(NAIST) |
| Date | 2018-10-20 |
| Paper # | MBE2018-31 |
| Volume (vol) | vol.118 |
| Number (no) | MBE-257 |
| Page | pp.pp.23-28(MBE), |
| #Pages | 6 |
| Date of Issue | 2018-10-13 (MBE) |