A retrievable covered stent has a self-expandable covered stent on the distal end and is particularly useful for occluding the neck of an aneurysm located in the vicinity of bifurcations or trifurcations of vessels. The said retrievable covered stent comprises a proximal retrieving structure and a proximal self-expandable supporting stent for supporting and retaining a smaller self-expandable covered stent on the distal end which is used to seal the neck of a bifurcation aneurysm.
