Annu Int Conf IEEE Eng Med Biol Soc. 2021 Nov;2021:7497-7501. doi: 10.1109/EMBC46164.2021.9630262.
In this paper, a minimally invasive wireless powered electronic lens (e-lens) with passive electrodes is presented for an ocular electrical stimulation. Previous research has focused on the differentiation property of the induction phenomenon and half wave rectifiers. However, these approaches are generally application specific, non efficient, suitable for low current, and deliver monophasic current stimulation. Existing rectifier-based techniques can lead to safety concerns as the offset voltage could change unpredictably. A new wireless power transfer circuit is presented for the design of an efficient system to wirelessly deliver charge-balanced biphasic waveforms through passive electrodes for transcorneal electrical stimulation. The absence of active components allows the development of a flexible e-lens system for therapeutic electrical stimulation of the eye.
本文提出了一种具有无源电极的微创无线供电电子透镜 (e-lens)，用于眼部电刺激。 先前的研究主要集中在感应现象和半波整流器的区分特性上。 然而，这些方法通常是特定于应用的，效率不高，适用于小电流，并提供单相电流刺激。 现有的基于整流器的技术可能会导致安全问题，因为偏置电压可能会不可预测地变化。 本文提出了一种新的无线功率传输电路，用于设计一种高效系统，通过无源电极无线传输平衡电荷的双相波形，用于经角膜电刺激。 由于没有有源元件，因此可以开发出用于眼部治疗性电刺激的灵活 e-lens 系统。
