Abstract This prospective ex vivo study investigated microdamage to single-use flexible ureteroscopes (fURS) after ureteroscopy and endoscopic combined intrarenal surgery (ECIRS). The performance of 30 WiScope devices (OTU Medical. San Jose. CA. https://www.spidertattooz.com/Rumchata-Pumpkin-Spice-750ml-27-5-Proof/