As an alternative to conventional surgery, a less invasive endovascular procedure has been developed that may be used to treat certain aneurysms. A collapsed stent-graft, a metal stent coupled with a fabric graft, is introduced into the vasculature, advanced to the size of the aneurysm, and deployed to span the aneurysm. The device creates a new aortic lumen, excluding the aneurysm sac from blood flow while maintaining flow within the stent-graft. This less invasive technique is designed to prevent or decrease the need for open surgery, to reduce the need for blood transfusion, to decrease the use of anesthetics and other drugs, and to speed recovery time. A reduction in intensive care and total hospital stay should result, leading to an increase quality of life following the procedure and a reduction in cost.