The RIWO D-URS combines the advantages of semi-rigid ureterorenoscopy (URS) and flexible URS in one disposable device with two working channels. With an LED at the distal tip and its high-resolution C-MOS sensor, the device ensures precision. It features a special handle design and provides one-to-one torsional stiffness in order to transfer hand movements directly to the flexible tip of the instrument, which ensures good manoeuvrability.