EVALUATION OF A NEWLY DEVISED SMALL-SIZED TRANSPARENT TUBE FOR ENDOSCOPIC INJECTION SCLEROTHERAPY UNDER NEGATIVE PRESSURE CONTROL

Abstract

Endoscopic injection sclerotherapy (EIS) has used widespreadly and a transparent overtube devised by Kitano made EIS much easier with its clear visual field. We devised a new small-sized transparent tube for EIS under negative pressure control. This smallsized tube (16mm in outer diameter) has a valve making the inside of the tube airtight without a balloon on fiberscope. With this method the rate of accurate intravariceal injection reaches 77%, and no patient had severe pain of throat during EIS. As a result, we confirmed that EIS under negative pressure control using this apparatus will have to be a standard method of intravariceal injection techniques.