One of the authors has developed a special device--the suturoscope--which allows endoscopic sutures with conventional suture material. After several modifications, in order to improve the prototype, the authors began its clinical application in 1992. Five bladder operations were performed--two antireflux operations, two meatotomies with meatoplasty, and an intramural ureteric ligation. The results indicate that this device is suitable for clinical use.