This paper reports a novel micro electromagnetic actuator serving as the distal rotary scanner of an endoscopic probe developed for side-viewing luminal tissue screening and analysis enabled through different endoscopic modalities. The micro rotary optical scanner, for the first time, offers stepwise, low-speed, and high-speed rotational motions to be compatible with endoscopic optical coherence tomography (OCT) and Raman spectroscopy. In comparison with preceding designs, this rotary scanner is shown to provide up to $125\times $ higher revolution speeds per power via a ~50% narrower body while limiting its operation temperature within a biologically safe level for in-vivo scanning purposes. A preliminary experiment on human skin tissues is performed using the prototyped side-viewing OCT endoscopic probe equipped with the developed distal scanner. The results demonstrate the probe’s ability for real-time 360° imaging of live tissue with both high speed and high resolution. These results pave the path for further testing on human internal lumens. [2020-0376]

中文翻译：

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用于多模态腔成像和分析的带有远端微型旋转扫描仪的侧视内窥镜探头

本文报告了一种新型微型电磁致动器，用作内窥镜探头的远端旋转扫描仪，该探头开发用于通过不同内窥镜方式实现的侧视管腔组织筛查和分析。微型旋转光学扫描仪首次提供逐步、低速和高速旋转运动，以与内窥镜光学相干断层扫描 (OCT) 和拉曼光谱兼容。与之前的设计相比，该旋转扫描仪显示可提供高达 $125\次 $ 通过更窄约 50% 的机身实现更高的每功率转速，同时将其操作温度限制在生物安全水平内 体内扫描目的。使用配备开发的远端扫描仪的原型侧视 OCT 内窥镜探头对人体皮肤组织进行了初步实验。结果证明了该探针能够以高速和高分辨率对活组织进行实时 360° 成像。这些结果为进一步测试人体内部流明铺平了道路。[2020-0376]