双极刺激中不对称电极-电解质界面下的放电校正

IF 4.9 2区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Jialei Wu;Simeng Yin;Yixin Zhou;Keping Wang
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引用次数: 0

摘要

神经电刺激器在生物医学领域有着广泛的应用,尤其是多通道神经电刺激器。然而,电极-电解质界面通常不相同,这在刺激器设计中很少讨论。本文首先分析了双极刺激在不同界面下的刺激和放电阶段,证明了不对称会导致不完全放电。为了解决这个问题,我们提出了一个三极刺激器,通过引入一个返回电极来分别放电工作电极和反电极。采用180nm CMOS工艺设计并制作了四通道三极刺激器的原型,每个刺激通道的面积为0.176 mm2。最大刺激电流为2.8 mA。放电后,在电气和体外测试中,残余电压接近于零。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Discharge Correction Under Asymmetric Electrode-Electrolyte Interfaces in Bipolar Stimulation
Neural electrical stimulators have been widely used in biomedical applications, especially those with multiple channels. However, the electrode-electrolyte interfaces are usually not identical, which is rarely discussed in stimulator design. This brief first analyzes the stimulation and discharge phases in bipolar stimulation when the interfaces are not identical, proving that the asymmetry will lead to incomplete discharge. To address this issue, we propose a tripolar stimulator by introducing a return electrode to discharge the working and counter electrodes separately. The prototype of a 4-channel tripolar stimulator is designed and fabricated in a 180-nm CMOS technology, with each stimulation channel occupying 0.176 mm2. The maximum stimulation current is 2.8 mA. After discharge, residual voltages are near-zero in both electrical and in vitro tests.
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来源期刊
IEEE Transactions on Circuits and Systems II: Express Briefs
IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程:电子与电气
CiteScore
7.90
自引率
20.50%
发文量
883
审稿时长
3.0 months
期刊介绍: TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.
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