Abstract: A vascular prosthesis deployment device and related methods are disclosed. In some embodiments the deployment device may include a delivery catheter assembly. The delivery catheter assembly may include an outer sheath, an intermediate sheath, and an inner sheath. One or more of the outer sheath, the intermediate sheath, and the inner sheath may be reinforced with a braided structure to prevent elongation and ovalization of the sheaths. The braided structure may include one or more yarn members imbedded in a material and formed from a plurality of twisted singles. The twisted singles may be formed from an aromatic polyamide material.

Abstract: A balloon expandable branching stent prosthesis are discussed herein. The balloon expandable branching stent prosthesis includes a trunk portion including a trunk portion stent frame, a first branching portion including a first branching portion stent frame, a second branching portion including a second branching portion stent frame, and a cover coupling the trunk portion stent frame, the first branching stent frame, and the second branching stent frame together forming a bifurcated stent, wherein the trunk portion stent frame, the first branching portion stent frame, and the second branching portion stent frame are spaced apart from each other with the cover disposed therebetween. A crotch portion of the balloon expandable branching stent prosthesis is disposed between the trunk portion, the first branching portion, and the second branching portion and the crotch portion is reinforced to prevent radial infolding of the cover.