A visual prosthesis with 100 electrodes featuring wireless signals and wireless power transmission

IEICE Electronics Express

Yasuo Tano²  Akihiro Uehara³  Yasuo Terasawa³  Kenzo Shodo³  Tohru Saitoh³  Eiji Yonezawa³  Jun Ohta¹  Motoki Ozawa³ 

[1] Materials Science, Nara Institute of Science and Technology;Department of Ophthalmology, Graduate School of Medicine, Osaka University;Vision Institute, Nidek Co., Ltd

关键词: visual prostheses;    electrode;    multiplexer;   

DOI  :  10.1587/elex.5.574

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(13)Cited-By(5)A visual prosthesis is an artificial sensory organ that transmits visual information to a blind person by electrically stimulating residual neurons in the visual nervous system. Such a system requires a large number of stimulating electrodes: It is technically difficult to connect a stimulator placed behind the ear to each of the stimulating electrodes over any significant distance with high reliability. We propose a visual prosthesis containing a multiplexer that is separately placed from the stimulator unit. The array of stimulating electrodes is connected to the stimulation unit through a multiplexer. The stimulating electrodes and multiplexer are placed onto the suprachoroidal space. The stimulation unit consists of a metal case and a coil and is implanted in the postauricular region of the cranium. The multiplexer and the stimulator unit are connected by a cable composed of six wires. Incorporating the multiplexer enables us to control of a large number of electrodes using a small number of conductors in the cable. We have developed a system with 100 electrodes which is powered and controlled wirelessly. Then we have confirmed that the proposed system functions successfully both in vitro and in vivo.

【 授权许可】

Unknown