Endovascular Repair of Thoracoabdominal Aortic Aneurysms

The primary objective is to assess the use of the thoracic bifurcation and the visceral manifold stent graft system to repair thoracoabdominal aortic aneurysms in patients with appropriate anatomy. The primary intent of the study is to assess safety (i.e. freedom from major adverse events (MAE) at 30 days) and preliminary effectiveness (i.e., treatment success and technical success) of the device (i.e., the proportion of treatment group subjects that achieve and maintain treatment success at one year). Additionally, the study will assess technical success and treatment success at each follow-up interval.