Abstract
Recently, endoscopic submucosal dissection has been recommended for the treatment of large colorectal tumors. However, the use of this procedure for this indication is not widely accepted because of its technical difficulty and because of the risk of complications [1] [2]. In order to minimize damage to deeper tissues, we have developed a novel endoscopic electrosurgical knife, the “B-Knife” (BSBK21S35/45; Zeon Medical Inc., Tokyo, Japan), that uses a bipolar current system.
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