抄録
There have been several kinds of pan-endoscopes suitable for the observation of upper G. I. tract in practice. Yet, the present report deals with a continuous progression in this field with our newly developed trial-built visual changeable fiberscope GIF type SK. The present fiberscope is equipped with two optical systems; i. e., 30° oblique view system and 90° side view system. These two systems can be easily switched on the operation panel using a simple mechanism. The visual angle of the scope covers 85° obilque and 64° aside; bending angle of the tip is 120° up and down as well as 90° right and left. The length of the metal tip is 21mm and the diameter, 12mm. The length of the soft tube is 1340mm with a diameter of 10mm. It is also equipped with inflation and water feeding device but without suction and biopsy mechanism. There have been more than 200 peformances by using this new scope in our clinic since November 10, 1975 until April 4, 1976 and a good result was obtained. Comparison of this new scope with a conventional GIF-K showed marked reducion of insertion discomfort from the patients, improvement on the controllability of the scope, and the diminished blind areas in the upper G.I. tract. It is concluded that the presented GIF-SK fiberscope is suitable for the routine upper G.I. endoscopy, especially for the purposes of screening and surveying.
