A Wireless Adiabatic Stimulator System with Current-Mode Power Reception and Stimulus Current Regulation Achieving Precise Charge Delivery and Electrode Scalability for Miniaturized Electroceuticals

📋 论文概要

本文提出了一种无线亚稳态刺激器系统，采用电流模式功率接收和刺激电流调节技术，旨在解决无线植入式神经刺激器中接收线圈尺寸缩小导致的功率接收不足问题，提高功率转换效率和刺激效率。

💡 主要创新点

• 提出无线亚稳态刺激系统，通过亚稳态工作方式降低刺激功耗，提高能量利用率。
• 采用电流模式功率接收架构，增强小尺寸线圈下的功率接收能力。
• 集成刺激电流调节机制，实现精确的刺激电荷输送。

🏷 关键词

📄 原文摘要

Electroceuticals that directly stimulate nerves are attracting attention as their effectiveness on various intractable diseases has been verified [1]. In such wireless implantable neurostimulators, miniaturizing the receiver (RX) module and downsizing the electrodes are essential (Fig. 35.5.1). However, reducing the RX coil size for miniaturization decreases the received power significantly. Thus, an energy-efficient stimulator that delivers a proper amount of charge with both a high power conversion efficiency (PCE) and a high stimulation efficiency factor (SEF) [4] is required. As the electrode size decreases and thus electrodetissue-impedance (ETI) becomes high, achieving high PCE when a stimulus current (ISTIM) is low becomes necessary while ensuring insensitivity to high ETI is imperative for accurate charge delivery. Furthermore, to support electrode scalability, the stimulator must withstand

👥 作者与机构

Yechan Park, Chul Kim, Minkyu Je

KAIST, Daejeon, Korea