Journal article

Laser Driven Miniature Diamond Implant for Wireless Retinal Prostheses

A Ahnood, R Cheriton, A Bruneau, JA Belcourt, JP Ndabakuranye, W Lemaire, R Hilkes, R Fontaine, JPD Cook, K Hinzer, S Prawer

Advanced Biosystems | Wiley-Blackwell | Published : 2020


The design and benchtop operation of a wireless miniature epiretinal stimulator implant is reported. The implant is optically powered and controlled using safe illumination at near‐infrared wavelengths. An application‐specific integrated circuit (ASIC) hosting a digital control unit is used to control the implant's electrodes. The ASIC is powered using an advanced photovoltaic (PV) cell and programmed using a single photodiode. Diamond packaging technology is utilized to achieve high‐density integration of the implant optoelectronic circuitry, as well as individual connections between a stimulator chip and 256 electrodes, within a 4.6 mm × 3.7 mm × 0.9 mm implant package. An ultrahigh effici..

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Awarded by Australian Research Council

Awarded by Natural Sciences and Engineering Research Council of Canada

Funding Acknowledgements

This research was supported by the Australian Research Council, through Linkage Grant No. LP160101052, Natural Sciences and Engineering Research Council of Canada (NSERC)Grant Nos. EGP506146-2016 and RGPIN/05783-2014, and by Ontario Centers of Excellence. Authors gratefully acknowledge insightful discussions with D. J. Garret and K. Ganesan.