A system for treating aortic dissection includes a sinotubular junction magnetic array having a first plurality of magnetic elements, a counter-magnetic array having a second plurality of magnetic elements, and an ascending aortic stent graft comprising a third plurality of magnetic elements. A method for treating aortic dissection includes the steps of positioning a sinotubular junction magnetic array at the sinotubular junction, advancing counter magnetic constructs from the femoral vein and positioning them in the right atrium, expanding the sinotubular junction ring at a target position, advancing the counter magnetic array to form an at least partial circumferential seal, and advancing and positioning an ascending magnetic graft within an interior of the sinotubular junction magnetic array. A system for treating aortic dissection, a fixation device for anchoring an ascending aortic stent graft, and a transcatheter device for treating aortic dissection are also described.