Semi-rigid ureterorenoscope is an instrument that allows you to examin the inside of the urinary tract.
This type of ureteroscope is longer and thinner than cystoscope and is used to see beyond the bladder into the ureters, the tubes that carry urine from the kindeys to the bladder.
With semi-rigid ureterorenoscope, doctore can see the stones in the ureter, fragment them and remove them.