The Nellix® EndoVascular Aneurysm Sealing System for the Treatment of Infrarenal Abdominal Aortic Aneurysms

Inclusion Criteria: * At least 18 years of age * Informed consent form understood and signed and patient agrees to all follow-up visits * Is able and willing to comply with clinical follow-up requirements for one year * Is able and willing to undergo Contrast-Enhanced Spiral CT scans * Is a candidate for endovascular repair of an infrarenal aortic aneurysm with or without an iliac aneurysm with at least one of the following; 1. aneurysm ≥ 4.5 cm in diameter, or 2. aneurysm is twice the diameter of the normal infrarenal aorta, or 3. aneurysm is growing at a rate of ≥ 10 % per year * Non-aneurysmal aortic neck length ≥ 5mm below the most inferior renal artery * Proximal aortic neck diameter between 16 and 36mm * Aortic neck angulation to the sac ≤ 60 * Common iliac artery diameter 8 to 35mm bilaterally * Aneurysm blood lumen diameter ≤ 60mm * Iliac and femoral arteries suitable for endovascular access with the Nellix System Exclusion Criteria: * Life expectancy ≤ 1 year * Dissecting, ruptured, or leaking aneurysm (blood outside the aorta), has sustained recent trauma, is symptomatic, or is non-degenerative * Aneurysm is thoraco-abdominal, suprarenal and/or mycotic * Thoracic aneurysm ≥ 4.5cm in diameter * AAA requires treatment that would result in bilateral occlusion of the internal iliac arteries * Presence of mural thrombus \> 50% circumferentially in aortic neck * Iliac aneurysm blood lumen diameter \> 35mm * Active infection, vasculitis, or systemic connective tissue disease (e.g., Rheumatoid arthritis, scleroderma, Marfan's syndrome, Ehlers-Danlos disease) at time of procedure * History of prior treatment of abdominal aortic or iliac artery aneurysm disease * Femoral or iliac artery occlusive disease such that device delivery is not possible * Vascular access for delivery of device requires placement of vascular conduit or is through an established vascular graft * Receiving dialysis * History of hypercoagulability * Allergy to IV contrast * Serum creatinine level \>2.0 mg/dL (or equivalent) * Patient is pregnant or nursing * Patient is currently enrolled in an investigational drug or device trial