US Patent 12127931 Stent graft with fenestration lock and methods of use

A stent graft includes a luminal graft component defining at least one fenestration. At least one ligature traverses the fenestration and at least partially defines an opening within the fenestration that secures a branch prosthesis. The stent graft is implanted in a patient to thereby treat an arterial aneurysm, such as an aortic aneurysm in a region of the aorta that includes at least one arterial branch, including juxtarenal and short-neck aortic aneurysms.