B is a side view of an alternate embodiment of the covered stent implanted in the right common and internal carotid arteries and having a bifurcation to branch into the right external carotid artery; [0055]FIG. 1C illustrates the covered stent of FIG. 1A positioned over the first and second guidewires (the delivery sheath not shown for clarity); [0056]FIG. 1D illustrates the covered stent of FIG.