Disclosed herein is a stent system adapted for being implanted in a body cavity or vessel, such as a blood vessel, a ureteral duct or an intestine, the stent system comprising a stent mesh, a catheter extending through the stent mesh, a biocompatible solution adapted for forming photo-crosslinked hydrogels when exposed to radiation, an inner balloon positioned around the catheter, and an outer balloon positioned around the inner balloon, wherein the outer balloon contains the biocompatible solution, the biocompatible solution filling up the space between the inner balloon and the outer balloon.
