The device can be used as an off-the-shelf system, negating the need for lead times associated with custom-built devices. The critical sizing will need to be done with the proximal end of the thoracic bifurcation, distal landing zone in the aorta or iliac arteries, and the bridging stents. The proximal end of the thoracic bifurcation can be sized by choosing any of the available sizes of the Medtronic TAAA thoracic bifurcation stent grafts, and the sizes of the bridging stents can be manipulated by choosing any of the commercially available sizes of the Atrium iCast. The Atrium iCasts are added to the system in-vivo and connected with passive fixation which negates the need to size the main body components based on the target vessel sizes. All other connections in the device make use of sizes that are the same, independent of patient anatomy.