Positioning and windowing device for covered stent

The invention belongs to the field of covered stents, and particularly relates to a positioning and windowing device of a covered stent. Comprising a support frame; a plurality of groups of springs are fixedly connected to one end in the supporting frame in a surrounding manner, and the other ends of the springs are fixedly connected with an annular adjusting frame; one end of the outer side wall of the annular adjusting frame is fixedly connected with a plurality of sets of connecting blocks in a surrounding mode, and the positions of the connecting blocks correspond to the positions of the springs. One end of the connecting block is fixedly connected with a pull rope; a superhard guide wire and a covered stent penetrate through the interior of a supporting frame to enter a blood vessel, when the blood vessel slightly moves, the superhard guide wire is clamped and fixed through an air bag, at the moment, according to the blood vessel deviation position, four pull ropes are pulled to make an annular adjusting