Covered stent and release device thereof

The invention provides a covered stent and a release device thereof, and relates to the technical field of medical instruments. The covered stent comprises metal stent rings and a covering film, the multiple metal stent rings are sequentially arranged at intervals and connected with the covering film, and under the auxiliary cooperation of the metal stent rings, the covering film can be kept shaped after being bent and deformed at the lesion position and is in a natural bent form, so that the covered stent is matched with the lesion position in shape, and the lesion position can be fixed. The covered stent has the bending deformation capacity and the capacity of keeping shaping after bending deformation at the same time, on this basis, the covered stent can be attached to the bent section of the aortic arch, the adherence between the stent and a blood vessel after implantation is effectively improved, the probability of occurrence of adverse events such as internal leakage is reduced, and the stent has the go