Endologix Chief Executive John McDermott added that more than a third of abdominal aortic aneurysm patients have complex anatomies and that Nellix has the potential to offer those patients treatment. Nellix is approved for investigational use only in the U.S. Lombard Medical in London Irvine-based Lombard Medical Inc.'s Altura and Aorfix stent grafts for repairing abdominal aortic aneurysms were featured during the Charing Cross symposium. Altura, which has European regulatory approval, is designed to simplify treatment of abdominal aortic aneurysm patients with standard anatomy, Lombard said. Aorfix, which received Food and Drug Administration approval last year, is designed for use in patients with aortic neck angulations of up to 90 degrees. Lombard also showcased its IntelliFlex LP delivery system for placing the stents inside patients.