On the Stability of Poly-Ethylenedioxythiopene as Coating Material for Active Neural Implants

被引：44

作者：

Boretius, Tim ^{[1
]}

Schuettler, Martin ^{[1
]}

Stieglitz, Thomas ^{[1
]}

机构：

[1] Univ Freiburg, Lab Biomed Microtechnol, Dept Microsyst Engn IMTEK, D-79110 Freiburg, Germany

来源：

ARTIFICIAL ORGANS | 2011年 / 35卷 / 03期

关键词：

Poly-ethylenedioxythiopene; Electrode; Stability; Pulse test; Characterization; Functional electrical stimulation; STIMULATION;

D O I：

10.1111/j.1525-1594.2011.01210.x

中图分类号：

R318 [生物医学工程];

学科分类号：

100103 [病原生物学];

摘要：

This article deals with the stability of poly-ethylenedioxythiopene (PEDOT) coatings under high loads of current pulses. Test parameters were chosen to match many peripheral nervous system applications in regard of charge injection, pulse width, and repetition frequency. PEDOT coatings were characterized with electrochemical impedance spectroscopes and pulse tests. After 60-100 million pulses, impedance increased and a more capacitive behavior was observed. A mean-time-to-failure of 127 million pulses could be calculated, suggesting a stable coating for at least this time frame with superior properties in regard of conventional platinum electrodes.

引用

页码：245 / 248

页数：4

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