A Novel Design of Transcutaneous Power and Data Bidirectional Transfer System for Biomedical Implants
更新时间：2019-05-21
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作者联系方式：Yang Zhou,Jinhai Niu(Department of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P.R.China)Ye Zhou,Shuai Niu,Xinyu Chai,Qiushi Ren(Institute for Laser Medicine & Bio-Photonics, Shanghai Jiao Tong University, Shanghai 200240, P.R.China)
会议名称：CME2007 第二届国际复合医学工程学术大会
会议地点：北京
召开年：2007
摘要：Electrical stimulation of the optic nerve has been identified as a form of visual prosthesis to restore lost vision in blind patients affected by retinitis pigmentosa and age-related macular degeneration, through many studies and experiments. Magnetic transcutaneous coupling is frequently used for power transfer to implanted electronic devices. In such a prosthetic device, how to improve the power transfer efficiency and how we can get a precise DC voltage output are the two of the most challengeable elements in the whole system design. This paper presents the use of a transmitter coil driver based on the Class- E amplifier. The closed-loop Class-E circuit shows a great promise, especially for the circuits with unusually low coefficients of coupling. The transfer system is designed to a high-Q system and it can compensate for the transmitter and receiver variations via a smart feedback system. The system is optimized to minimize the power losses. This paper also describes the design of a data transfer system. This part can deliver the processed digital information that is useful for the implanted stimulator from the external side to the internal side (implant).
