Flexible ultrasound-induced retinal stimulating piezo-arrays for biomimetic visual prostheses.

Flexible ultrasound-induced retinal stimulating piezo-arrays for biomimetic visual prostheses.
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DOI:
10.1038/s41467-022-31599-4
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发表时间:
2022-07-04
影响因子:
16.6
通讯作者:
Zhou, Qifa
Zhou, Qifa
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Jiang, Laiming;Lu, Gengxi;Zeng, Yushun;Sun, Yizhe;Kang, Haochen;Burford, James;Gong, Chen;Humayun, Mark S.;Chen, Yong;Zhou, Qifa

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Electronic visual prostheses, or biomimetic eyes, have shown the feasibility of restoring functional vision in the blind through electrical pulses to initiate neural responses artificially. However, existing visual prostheses predominantly use wired connections or electromagnetic waves for powering and data telemetry, which raises safety concerns or couples inefficiently to miniaturized implant units. Here, we present a flexible ultrasound-induced retinal stimulating piezo-array that can offer an alternative wireless artificial retinal prosthesis approach for evoking visual percepts in blind individuals. The device integrates a two-dimensional piezo-array with 32-pixel stimulating electrodes in a flexible printed circuit board. Each piezo-element can be ultrasonically and individually activated, thus, spatially reconfigurable electronic patterns can be dynamically applied via programmable ultrasound beamlines. As a proof of concept, we demonstrate the ultrasound-induced pattern reconstruction in ex vivo murine retinal tissue, showing the potential of this approach to restore functional, life-enhancing vision in people living with blindness. Electronic visual prostheses, or biomimetic eyes, have shown capability of restoring functional vision through electrical pulses artificially initiating neural responses. Here, authors demonstrate a flexible piezo-array for ultrasound-induced retinal stimulation.
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