公开(公告)号：US20230181927A1

公开(公告)日：2023-06-15

申请号：US18078471

申请日：2022-12-09

Applicant: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Hyung-Min LEE ,  Seong-Woo KIM ,  Kyeongho EOM

IPC: A61N5/06 ,  A61F2/14

CPC classification number: A61N5/0622 ,  A61N5/0601 ,  A61F2/14 ,  A61N2005/0626 ,  A61N2005/0652

Abstract: Disclosed herein is a sub-retinal prosthesis using a multi-photodiode sensing technology. The sub-retinal prosthesis using a multi-photodiode sensing technology includes: a pixel array including a plurality of pixels of which k pixels are set as a unit group; and a digital controller controlling the pixel array to activate one of the k pixels as a stimulation electrode and activate the other k-1 pixels as return electrodes, wherein the unit group includes k photodiodes, a sensing circuit and a current driver, the sensing circuit outputs a stimulation parameter using currents each generated by the k photodiodes according to irradiation of light as an input, and the current driver outputs a stimulation current corresponding to the stimulation parameter.