ENDOSCOPIC SUBMUCOSAL DISSECTION (ESD) is difficult for novice endoscopists. In conventional ESD, the operator controls advancing and withdrawing the tip of the device with the right hand, while the scope is controlled with the left hand. The second operator opens and closes the tip (Fig. 1). When a novice endoscopist is the operator, simultaneously controlling the endoscope and device becomes difficult and may cause erroneous

中文翻译：

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培训内窥镜黏膜下剥离术新手的新方法：大师-学徒技术

内镜下黏膜下剥离术 (ESD) 对内镜新手来说很困难。在传统的 ESD 中，操作员用右手控制推进和收回设备的尖端，而内窥镜则用左手控制。第二个操作员打开和关闭尖端（图 1）。当内窥镜新手是操作者时，同时控制内窥镜和设备变得困难并可能导致错误