胃肠狭窄时,普通内窥镜不能通过。虽可用儿科内窥镜,但其在作结肠检查时易绕结。作者将富士牌内窥镜改进成一新型的窄形内窥镜,则可避免这一缺点。实际上,胃肠道狭窄的大部分病例亦能允许内径较宽的器械通过,因此,作者将内窥镜改制成锥形,使其能像金属或锥形橡皮探条一样通过狭窄部位,而 Gastrointestinal stricture, the ordinary endoscope can not pass. Although pediatric endoscopy is available, it is easy to wind around during colon examination. The authors will be able to avoid this shortcoming by improving the Fuji brand endoscope into a new type of narrow endoscope. In fact, most cases of gastrointestinal stenosis also allow passage of instruments with a wide inner diameter, so the author adapted the endoscope to a cone that allowed it to pass through a narrow site like a metal or tapered rubber band,