There is provided a stent member a plurality of spaced stent elements for location on a tubular graft, wherein a first stent element is located in a first location on said graft, and wherein a second stent element is located in a second location or said graft, and wherein the second stent element comprises a saddle shaped stent. The first stent element includes a ring shaped (circular) stent. The second stent element includes at least one, preferably 2 to 5, saddle shaped stents. Optionally a third stent element comprising from 1 to 10 saddle shaped stents is also present. The stents are typically form a continuous loop of an elongate member of resilient material such as nitinol or PEEK. A stent graft comprising a tubular sleeve to which the stent member is attached is also described, as is the use of the prosthesis for treatment of vascular disorders such as aortic aneurysm.
