Ureteral stents are tubes usually made of polymers that are inserted into the ureter. If a patient has an obstruction in their Ureteropelvic junction, Ureterovesical junction, or is suffering from kidney stones, a ureteral stent is placed into their ureter by a urology specialist to facilitate the urine flow and drainage from the kidney to the bladder. Any movement of the ureteral stent in the ureter may cause Urinary Tract Infection (UTI). Ureteral stents fabricated by NilooMadica company are designed in a pig-tail shape known as Double-J stents to reduce UTI and any pain which mortifies patients. Novel techniques are incorporated in our manufacturing to produce suitable coatings on the surface of the ureteral stents which are in direct contact with human cells. Moreover, they are made of radio-opaque materials, which facilitate the insertion of ureteral stents by urologists.