GI Truct Fistula closure: Dealing with closing up under the endoscopic procedures various fistulars, cavities or hemostatics of acute spurting bleeding encountered during the therapeutic endoscopic interventions on GI tract still remain challenging and further may severly limit the wider application of the endoscopic intervention itself nevertheless huge benefits to both patients and physicians. Not a few creative ideas for this are in process with success however many of them are considered still controversal with long way to go further, truly it is. STM offers a variety of solutions for fistular/cavity close, hemostatics, safer fixation of esophageal stents and so on not to mention more of other essential solutions all required in GI.