An endoscope with a flexible inserted portion intended for the visual examination and treatment of the ureter and renal pelvis. It is inserted through the external urethral orifice or a surgically-created percutaneous route during a urological procedure. Anatomical images are transmitted to the user by a video system with an electronic image sensor at the distal end of the endoscope and the images showing on a monitor. This device is commonly used for the removal or crushing of stones, and evaluation of pyelitis and renal failure. This is a reusable device.