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我们采用国产XW-Ⅱ型侧视胃镜观察12指肠,在通过幽门时其方法与以往文献介绍的有所改进.并用改进后的方法实际操作观察300例次,全部一次顺利通过.无一例失败.现介绍如下.当物镜镜面接近幽门(距离1-2cm)能清晰看到幽门时,待幽门孔开放.调节角度钮使视野方块下缘的边与幽门孔的上方缘(即小弯侧)相吻合,让幽门恰好消失在视野方块的下方.此时,镜头末端
We use the domestic XW-Ⅱ type endoscopy gastroscopy observed 12 intestines, when passing through the pylorus, the method described in the literature and improved some of the past, and with the improved method of practical observation of 300 cases, all successfully passed without exception. When the objective lens mirror close to the pylorus (distance 1-2cm) can clearly see the pylorus when the pylorus opening to be open.Adjust the angle button so that the lower edge of the visual field block and the upper edge of the pyloric hole (ie, small curved side) Coincide, so that just disappear pylons in the field of view below the box at this time, the end of the lens