In recent years, endoscopic variceal ligation (EVL) has been performed in the treatment of esophageal varices. It has been reported that esophageal perforation due to the over tube is a serious complication. Larger differentiation between diameters of endoscope and over tube make the insertion of the tube more painful. Therefore, we designed double over tube that has conventional over tube (outer tube) and thin one (inner tube) ．
We performed EVL in 13 cases of the primary treatment and 9 cases of the retreatment after the first EVL using conventional over tube for esophagogastric varix. As a result, insertion of double one is easier than that of conventional one in all the cases.
The retreatment using the double over tube is more convenient for all the cases than the first treatment. No serious complications due to double over tube was encountered in all cases. Therefore, it was thought that our technique of a double over tube is easier to perform and more convenient for the patients.
