The Nellix Endograft System for Abdominal Aortic Aneurysm Treatment

This study is testing a new medical device called the Nellix Endograft System for treating a condition called abdominal aortic aneurysm (AAA) — a bulge in the main artery of the abdomen that can be life-threatening if it bursts. The Nellix system is inserted through the groin using a minimally invasive approach (no large abdominal cut needed) and uses special polymer-filled sacs to seal off the aneurysm. This trial is looking at whether the procedure is safe and feasible, and will follow patients with regular check-ups. You may be eligible if: - You are 18 years of age or older - You have an abdominal aortic aneurysm larger than 4 cm in diameter - The neck of your aorta (just below the kidneys) is between 18 and 26 mm wide - You are otherwise a candidate for open surgical repair of the aneurysm - You are able to attend follow-up visits You may NOT be eligible if: - You have acute kidney failure - Your aneurysm has recently ruptured or is leaking - You have other serious medical conditions that increase surgical risk - You are pregnant Talk to your doctor about whether this trial might be right for you.