使用接近感应传感器无创腹腔镜检测消化道小肿瘤

胃和结直肠肿瘤的精确位置对于肿瘤外科医生来说至关重要，因为它决定了切除范围和淋巴结清扫范围。 然而，这项任务有时被证明是非常具有挑战性的，尤其是在肿瘤较小、质地柔软且不侵入浆膜的腹腔镜环境中。 鉴于此，研究团队开发了一种适用于微创手术的新型仪器，仅由手术外科医生操作，具有精确定位消化道肿瘤的潜力。 它由一个感应式接近传感器和一个封装在可高压灭菌不锈钢笼中的电子块组成，该笼与内窥镜止血夹协同工作，其结构经过修改以提高检测能力。 通过扫描结肠或胃的浆膜侧，该仪器能够准确地确定先前在诊断性内窥镜检查期间放置在肿瘤附近正常肠粘膜上的夹子的位置。 在目前对大型动物进行的体内实验中，修改后的夹子可以毫无困难地运送到感兴趣的位置并附着在肠粘膜上。 使用腹腔镜方法，当传感器以 0.3 厘米/秒的速度扫描肠道并在浆膜上施加轻微压力时，该系统的检测率达到 65%。 当传感器被直接引导到夹子连接点时，该值增加到 95%。 当扫描速度超过 1 cm/s 和传感器夹距离超过 3 mm 的截止值时，检测率急剧下降。 总之，所提出的检测系统展示了其为消化腹腔镜外科医生提供快速便捷解决方案的潜力，但是其检测范围仍需要改进以使其在临床环境中有用。

使用接近感应传感器无创腹腔镜检测消化道小肿瘤

腹腔镜传感器械与内镜附着的金属标签复合物检测肿瘤的原理——肿瘤标志物。

使用接近感应传感器无创腹腔镜检测消化道小肿瘤

模块化腹腔镜检测仪器由一个近端手柄组成，该手柄承载由盖子覆盖的电子块以保持表面无菌环境（左角），外壳和杆之间连接处的钛合金（左中）， 位于仪器远端的电感式传感器，封装在防水连接处（右中）。 整台仪器概览（右）。

使用接近感应传感器无创腹腔镜检测消化道小肿瘤

内窥镜系统，用于将修改后的夹子在感兴趣的点部署到胃肠道中。

使用接近感应传感器无创腹腔镜检测消化道小肿瘤

(A) 腹腔镜手术进入腹腔； (B) 将夹子经口插入并部署到十二指肠中。

使用接近感应传感器无创腹腔镜检测消化道小肿瘤

结合腹腔镜和内窥镜方法确定夹子的位置，放大仪器扫描夹子位置。

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