Stent Graft With Internal Tunnels And Fenestrations And Methods Of Use

A thoraco-abdominal branch graft prosthesis, comprising:

• a) a main graft component having a luminal wall defining an open proximal end, an open distal end opposite the open proximal end, a main lumen extending from the open proximal end to the open distal end, and at least one main graft wall fenestration, wherein the open distal end of the main graft component is tapered and has a smaller diameter than the proximal end of the main graft component;
• and
• b) at least one tunnel graft component having a tunnel graft luminal wall defining, at least in part, a tunnel graft proximal end, a tunnel graft distal end opposite the tunnel graft proximal end, a tunnel graft lumen extending from the tunnel graft proximal end to the tunnel graft distal end, and at least one tunnel graft fenestration in the tunnel graft wall, wherein the tunnel graft component is within the main graft lumen and a major longitudinal axis of the tunnel graft lumen is substantially aligned with a major longitudinal axis of the main graft lumen, and wherein the wall of the tunnel graft component is fixed to the wall of the main graft component, whereby the fenestration of the tunnel graft wall is aligned with the fenestration of the luminal wall.