Yes, like other kidney stone surgery, a double J stent is placed in the ureter in most cases, especially in RIRS. The purpose of Double J stent keeps the ureter open as the laser fragments of stone are washed out after any intervention during the decrease of the risk of ureteric stricture formation. No, Double J stent is kept temporarily for 2 to 4 weeks, and later removed through the urethra endoscopically as a short procedure and the patient can go home the same day after getting it removed.