Patent ID: 8864819
Filing Date: 2014-10-21
Classification: A61F

Abstract:
1. A stent graft comprising a tubular body defining a main lumen, a side wall, at least one lateral aperture in the side wall of the tubular body of the main lumen and at least one side tube extending from the lateral aperture and defining an external side tube lumen in fluid communication with the main lumen, the side tube extending from the tubular body at an acute angle from the tubular tubular body, the tubular body and the side tube being formed from a biocompatible graft material, and a junction between the tubular body and the side tube, the junction defining a bifurcation between the tubular body and the side tube and having a perimeter, the tubular body and the side tube each including at least one self expanding zig-zag stent, each self expanding zig-zag stent being affixed to the graft material, each zig-zag stent comprising strut portions and bend portions, with a pair of struts and a bend between them defining a V portion, wherein a first zig-zag stent is around the tubular body such that a V portion of the first zig-zag stent is engaged about the bifurcation with adjacent strut portions extending along the sides of the junction between the tubular body and the side tube, and a second zig-zag stent is around the side tube, such that a V portion of the second zig-zag stent is engaged about the bifurcation with adjacent strut portions extending along the sides of the e junction between the tubular body and the side tube, whereby the main lumen and the side tube lumen are each kept open, independently, allowing fluid to flow freely therethrough, wherein the first and second zig-zag stents are non-concentric.