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Optic nerve stimulation system with adaptive wireless powering and data telemetry
Li X.1; Lu Y.3; Meng X.2; Tsui C.-Y.2; Ki W.-H.2
2017-12-20
Source PublicationMicromachines
ISSN2072666X
Volume8Issue:12
AbstractTo treat retinal degenerative diseases, a transcorneal electrical stimulation-based system is proposed, which consists of an eye implant and an external component. The eye implant is wirelessly powered and controlled by the external component to generate the required bi-polar current pattern for transcorneal stimulation with an amplitude range of 5 μA to 320 μA, a frequency range of 10 Hz to 160 Hz and a duty ratio range of 2.5% to 20%. Power delivery control includes power boosting in preparation for stimulation, and normal power regulation that adapts to both coupling and load variations. Only one pair of coils is used for both the power link and the bi-directional data link. Except for the secondary coil, the eye implant is fully integrated on chip and is fabricated using UMC (United Microelectronics Corporation, Hsinchu, Taiwan) 0.13 μm complementary metal-oxide-semiconductor (CMOS) process with a size of 1.5 mm × 1.5 mm. The secondary coil is fabricated on a printed circuit board (PCB) with a diameter of only 4.4 mm. After coating with biocompatible silicone, the whole implant has dimensions of 6 mm in diameter with a thickness of less than 1 mm. The whole device can be put onto the sclera and beneath the eye's conjunctiva. System functionality and electrical performance are demonstrated with measurement results.
KeywordData telemetry Implantable medical device (IMD) Neural stimulation Wireless power transfer (WPT)
DOI10.3390/mi8120368
URLView the original
Language英語
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被引频次[WOS]:2   [WOS记录]     [WOS相关记录]
Document TypeJournal article
专题University of Macau
Affiliation1.Broadcom Limited, San Jose
2.Hong Kong University of Science and Technology
3.Universidade de Macau
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Li X.,Lu Y.,Meng X.,et al. Optic nerve stimulation system with adaptive wireless powering and data telemetry[J]. Micromachines,2017,8(12).
APA Li X.,Lu Y.,Meng X.,Tsui C.-Y.,&Ki W.-H..(2017).Optic nerve stimulation system with adaptive wireless powering and data telemetry.Micromachines,8(12).
MLA Li X.,et al."Optic nerve stimulation system with adaptive wireless powering and data telemetry".Micromachines 8.12(2017).
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