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纤维胃镜的类型很多,总体结构相同,按先端部的形式和物镜的部位,分为直视、侧视和斜视三种类型。但目前由于胃镜先端部分角度改进,在临床上以直视镜应用最广。直视式纤维胃镜能满意地观察全部食管,也可以检查胃、十二指肠球部及降部上段,对食管及胃大弯观察较侧式镜清楚。 侧视式纤维胃镜在胃内操作灵活、观察胃窦、胃角和胃体小弯侧病更清楚,也可以观察十二指肠球部和降段上部的病变。活检调节较灵活且准确。但观察食管中段以上病变
Many types of fiber gastroscopy, the overall structure of the same, according to the form of the first part of the lens and the site, divided into direct vision, lateral and strabismus of three types. However, at present, due to the improvement of the angle of the tip part of the gastroscope, the most widely used in clinical practice is the direct-view mirror. Direct-looking fiber endoscopy can satisfactorily observe all of the esophagus, you can also check the stomach, duodenal bulb and descending part of the upper esophagus and stomach curved side of the mirror than the clear observation. Side-looking fiber endoscopy flexible operation in the stomach, observe the antrum, the corner of the stomach and the lesser curvature of the corpus is more clear, you can also observe the lower part of the duodenum and descending segment of the lesion. Biopsy adjustment more flexible and accurate. But observe the esophageal lesions above