Covered stent

A covered stent, comprising a hollow tubular main body, and a window provided on a side wall of the tubular main body, wherein an elastic supporting member is provided at a periphery of the window;

• an imaging member is provided on the elastic supporting member;
• and at least part of the imaging member is movably connected to the elastic supporting member;
• wherein the elastic supporting member has an open-loop structure, and in a natural state, two end portions of the elastic supporting member partially overlap;
• and wherein the two end portions of the elastic supporting member may move relative to each other;
• wherein the imaging member has a long axis m which is approximately parallel to a generatrix direction of the covered stent, and a short axis n which is approximately perpendicular to the generatrix direction of the covered stent;
• and
• wherein the covered stent includes a compression state and a natural state, the covered stent can transition between the compression state and the natural state, and the overlapping portions of the two ends of the elastic supporting member are located in a middle region of the elastic supporting member, wherein the middle region is covered by points on the elastic supporting member, and a first perpendicular distance from any of the points in the middle region of the elastic supporting member to the proximal end of the elastic supporting member and a second perpendicular distance from any of the points in the middle region of the elastic supporting member to the distal end of the elastic supporting member are greater than or equal to 2 mm, so that the proximal end and the distal end of the elastic supporting member are always located in the imaging member in the compression state and the natural state, and during the process of transitioning between the compression state to the natural state.