An Implantable Ciliary Muscle LFP Recording and Transmitting System.

Sebastian Kaltenstadler, Bishesh Sigdel, Sven Schumayer, Raphael Steinhoff, Torsten Straser, Albrecht Rothermel
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引用次数: 0

Abstract

In this work, we present a sclera-attachable eye implant to measure ciliary muscle local field potentials (LFPs) as a demonstrator for a preclinical study. The recorded values can be plotted and filtered in real-time. It records with a single differential channel with sampling rates of up to 250 Hz and offers a programmable gain amplifier. We show the measurement quality with in vivo measurements. The system is powered by a CR1025 coin cell battery and different measures are presented to improve measurement quality and run-time. The impact of battery non-idealities is investigated. The implant measures 18x12 mm with an actual area of 168 mm2 and consumes up to 375 μA in ACTIVE mode with a total measurement run-time of up to 80 hours. The whole system, including the battery, is implantable into the orbital cavity and a standby time of 6 months is obtained.

一种植入式睫状肌LFP记录与传输系统。
在这项工作中,我们提出了一个巩膜附着眼植入物来测量睫状肌局部场电位(LFPs)作为临床前研究的示范。记录值可以实时绘制和过滤。它记录的单差分通道,采样率高达250赫兹,并提供一个可编程增益放大器。我们用体内测量来显示测量质量。该系统由CR1025纽扣电池供电,并提出了不同的措施来提高测量质量和运行时间。研究了电池非理想性的影响。该植入体尺寸为18x12mm,实际面积为168mm2,在ACTIVE模式下功耗高达375 μA,总测量运行时间长达80小时。包括电池在内的整个系统可植入眶腔,待机时间可达6个月。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
0.80
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