High efficiency wireless power transmission with digitally configurable stimulation voltage for retinal prosthesis

Guoxing Wang, Wentai Liu, Mohanasankar Sivaprakasam, James D. Weiland, Mark S. Humayun

研究成果: Paper同行評審

9 引文 斯高帕斯(Scopus)

摘要

Electrical stimulation of retinal neuron cells has been used to invoke perception of sight in legally blind patients due to loss of photoreceptors. In such a prosthetic device, one of the challenges is that the required stimulation voltage varies among patients and also over time. The voltage supply to the stimulator circuits should adapt to these changes for optimal device operation. This paper presents a closed loop wireless power transmission system, which can digitally adjust the voltage. In the system, power is wirelessly transmitted to the secondary side (implant) through a magnetically coupled coil pair. The secondary side wirelessly transmits information about the recovered voltage back to the primary side, which accordingly adjusts the amount of power transmitted and thus maintains the voltage in the implant at the required value. Experimental results verify that the voltage can be effectively configured with power savings up to 30%.

原文English
頁面543-546
頁數4
DOIs
出版狀態Published - 2005
事件2nd International IEEE EMBS Conference on Neural Engineering, 2005 - Arlington, VA, United States
持續時間: 2005 3月 162005 3月 19

Conference

Conference2nd International IEEE EMBS Conference on Neural Engineering, 2005
國家/地區United States
城市Arlington, VA
期間05-03-1605-03-19

All Science Journal Classification (ASJC) codes

  • 一般工程

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