Early experience with the 8.5 F compact ureteroscope.

The clinical evaluation of the recently introduced 8.5 F rigid ureteroscope is presented. This instrument is for diagnosis and surgical intervention within the ureter and renal pelvis and is specifically designed for use in small caliber adult and adolescent ureters. Twenty-four patients have been examined for diagnosis, removal of calculi, treatment of fistula, and resolution of prior iatrogenic injuries. Only one patient could not be examined due to fixation of the mid ureter.