Patent ID: 8715336

Claim:
An exclusion device for excluding fluid contact to an abnormality in a body flow lumen, comprising: a body portion having a wall portion and at least opposed first and second open ends; an aperture extending through said wall portion, said aperture alignable with an opening of a branch feature into the body flow lumen; and an extension receivable within said aperture and extendible there from into the branch feature extending from the body flow lumen, said extension including: a generally tubular body having a first end and a second end, the generally tubular body including an excluding material and at least one stent; and a flange having a generally frustoconical internal support feature separate from the at least one stent of the generally tubular body, the generally frustoconical internal support feature encapsulated within a biocompatible polymer or held by one of the following overmolded materials: silicone polyurethane, polyurethane blends, polyurethane alloys, ePTFE, PET, polypropylene, polyethylene or other biocompatible materials, the biocompatible polymer or overmolded material defining a generally tapered outer circumferential surface of the flange, the flange located adjacent to and coupled to said first end of said generally tubular body and adapted to sealingly engage with said body portion adjacent said aperture, the generally tapered outer circumferential surface tapering from a first end having a first diameter to a second end having a second diameter, wherein the first diameter is larger than the second diameter; wherein said extension is configured to urge said flange of said extension and said body portion in contact adjacent to said aperture such that the generally tapered outer circumferential surface of said flange is adapted to engage against said aperture, the first end of the generally tapered outer circumferential surface is configure to be disposed within said body portion, and the second end of the generally tapered outer circumferential surface is configured to be disposed outside of the body portion.