The purpose of the study is to evaluate the safety and performance of the Single Branch Nexus™ Aortic Arch Stent Graft System for the endovascular treatment of thoracic aortic pathologies requiring landing in the Aortic Arch (zone 0, zone 1, zone2). The investigational device is the Single Branch Nexus™ Aortic Arch Stent Graft System and its designated Delivery System.