Fabrication of ureteral stent and catheter with extraction string
The main primary materials included 6 F double-J stent with extraction string (Soft Percuflex™ Stent with HydroPlus™ Coating; Boston Scientific, MA, USA), 5 F ureteral catheter from Cook Medical (Bloomington, IN, USA), 5 ml syringe, scalpel.The extraction string at the end of the double-J stent was snipped from the knot in the string group. Part of the string was fixed at the distal end of the double-J stent (35 cm for the male patient and 25 cm for the female patient) (Fig. Main steps of TJIU technique: 