TAPERED BODY AAA GRAFT

A modular stent graft system comprises a first stent graft (12) having a first open end, a tapered zone (38) tapering from a first diameter to a second diameter smaller than the first diameter, and a cylindrical zone (36) extending from the tapered zone to a second open end. The stent graft system also comprises a second stent graft (14) configured for insertion within the first stent graft (12), the second stent graft comprising a first open end, a tapered zone (58) extending from the first open end of the second stent graft, the tapered zone (58) of the second stent graft tapering from a third diameter to a fourth diameter smaller than the third diameter, and a cylindrical zone extending from the tapered zone of the second stent graft to a second open end of the second stent graft. The third diameter is greater than or equal to the second diameter. Each tapered zone has an angle of taper and the angle of taper of the tapered zone (58) of the second stent graft is the same as or greater than the angle of taper of the tapered zone (38) of the first stent graft. The second stent graft (14) comprises a first internal seal stent at the first open end of the second stent graft (14), and a second internal seal stent partially nesting with the first internal seal stent, the second seal stent having fewer top apices than the first seal stent and a length greater than the length of the first seal stent.