The laser technology founds its way also to the cystoscopy. With the LUT continuous flow laser cystoscope-urethroscope sheath an instrument for use in the lower urinary tract was developed. The inner sheath has a generous, integrated working channel and therefore guides instruments as well as the glass fiber probe for laser treatment safely to the tip of the sheath. The necessary cooling effect for the probe as well as a clear view during operation is provided by a continuous fow system which offers steady irrigation conditions. The appropriate LUT endoscope in 4 mm / 30° offers best image condition without distortions. A visual obturator for the introduction of the cystoscope under sight completes the set.