https://www.manishmediinnovation.net/double-j-stent-manufacturer.php

double_J_stent.jpg

Double J stents are used in urology processes; the double j stents are kept for around 4-6 weeks to help heal the ureter, treat kidney stones and drainage of urine. The long-term use of Double J stents is associated with mild symptoms, whereas long duration can result in severe symptoms.