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Packaging study for a 512-channel intraocular epiretinal implant

Chang, Jay Han-Chieh and Liu, Yang and Kang, Dongyang and Monge, Manuel and Zhao, Yu and Yu, Chia-Chen and Emami-Neyestanak, Azita and Weiland, James and Humayun, Mark and Tai, Yu-Chong (2013) Packaging study for a 512-channel intraocular epiretinal implant. In: IEEE 26th International Conference on Micro Electro Mechanical Systems (MEMS). IEEE , Piscataway, NJ, pp. 1045-1048. ISBN 978-1-4673-5654-1.

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Much effort has been put into developing multi-channel retinal prosthetic devices. Currently, even the most advanced prostheses do not have enough channels to provide vision to a desirable level. In this paper, we present a system design and a packaging scheme for a 512-channel intraocular epiretinal implant. Both a wireless power coil (with high transfer efficiency) and a data coil are included for this intraocular system. Simulation of the interference between coils is investigated and the results show that the two coils can be put in a co-planar fashion using two notch filters to minimize interference. The complete package is demonstrated with a mechanical model with a parylene-C flexible circuit board, i.e., parylene flex, to show the placement of the IC chips, discrete components, and coils. It also shows the final folded device after surgical insertion into an eye to save space. The feasibility of the proposed structure has been successfully tested in vivo. Experimentally, the maximum allowable pulling force is measured by a dynamic mechanical analysis (DMA) machine to be 8N, which provides a large safety margin for surgery.

Item Type:Book Section
Related URLs:
URLURL TypeDescription DOIArticle
Liu, Yang0000-0002-8155-9134
Monge, Manuel0000-0001-9799-0693
Emami-Neyestanak, Azita0000-0003-2608-9691
Humayun, Mark0000-0002-5830-5208
Tai, Yu-Chong0000-0001-8529-106X
Additional Information:© 2013 IEEE. This work is supported by Biomimetic MicroElectronic Systems (BMES). The authors would also like to thank Mr. Trevor Roper and other lab members of the Caltech Micromachining Laboratory for assistance with fabrication and fruitful discussion.
Funding AgencyGrant Number
Biomimetic MicroElectronic Systems (BMES)UNSPECIFIED
Record Number:CaltechAUTHORS:20130729-090047591
Persistent URL:
Official Citation:Chang, J.H.; Yang Liu; Dongyang Kang; Monge, M.; Yu Zhao; Chia-Chen Yu; Emami-Neyestanak, A.; Weiland, J.; Yun, M.H.; Yu-Chong Tai, "Packaging study for a 512-channel intraocular epiretinal implant," Micro Electro Mechanical Systems (MEMS), 2013 IEEE 26th International Conference on , vol., no., pp.1045,1048, 20-24 Jan. 2013 doi: 10.1109/MEMSYS.2013.6474428
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39615
Deposited By: Tony Diaz
Deposited On:29 Jul 2013 21:46
Last Modified:09 Mar 2020 13:19

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