新的Clarion电极定位器:插入研究。

T Lenarz, J Kuzma, B P Weber, G Reuter, J Neuburger, R D Battmer, J E Goldring
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引用次数: 27

摘要

设计了一种新型的直薄电极阵列(通用电极),与定位器一起使用,定位器将电极阵列放置在耳蜗内侧壁(动肌)上。研究目的是证明通用电极和标准电极在人类颞骨中插入的安全性和易用性、组织创伤、电极位置和深度;测试猫的功能特性;并在临床研究中确定手术程序和电生理益处。尸体研究表明,通用电极和定位器易于插入,没有组织损伤。该定位器实现了180度的平均插入深度增益。动物实验表明,脑干电听觉反应(EABR)的阈值降低了6 dB。没有发现额外的耳蜗损伤或额外的结缔组织形成。术中人体研究结果显示EABR阈值和镫骨反射阈值均显著降低。阻抗增大。x光平片显示电极与定位器的模态接近。新的Clarion电极定位器是一个相对安全的设计,提供调制接近。电生理上的好处包括降低阈值和功耗。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
New Clarion electrode with positioner: insertion studies.

A new straight thin electrode array (universal electrode) was designed to be used together with a positioner, which will place the electrode array at the medial wall (modiolus) of the cochlea. The study objectives were to demonstrate safety and ease of insertion, tissue trauma, electrode position, and depth for universal and standard electrodes in human temporal bones; to test functional properties in cats; and to determine the surgical procedure and electrophysiological benefits in a clinical study. The cadaver study demonstrated the ease of insertion for the universal electrode and the positioner without tissue damage. An average gain of insertion depth of 180 degrees was achieved with the positioner. Animal studies demonstrated a reduction in threshold of 6 dB for the electrical auditory brain stem response (EABR). Neither additional cochlear damage nor additional connective tissue formation was found. The intraoperative human study findings showed a marked reduction of threshold for both EABR and stapedius reflex thresholds. Impedances were increased. Plain x-rays demonstrated modiolus proximity of the electrode with the positioner. The new Clarion electrode with positioner is a relatively safe design for providing modiolus proximity. The electrophysiological benefits include reduction of threshold and power consumption.

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