Stented side branch graft
AssigneesWilliam A. Cook Australia Pty. Ltd., Cook Incorporated
InventorsDavid Hartley, Susan Morriss
Life of this patent
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Abstract
A stent graft (1) has a tubular body (3) defining a main lumen and a side tube (5) defining a side tube lumen and in fluid communication with the main lumen and defining a junction (13) between the tubular body and the side tube. The junction includes an acute angle of attachment (α). A first zig-zag stent (15) is wrapped around the tubular body such that a V portion of the first zig-zag stent is engaged about the acute angle of the junction and a second zig-zag stent (23) is wrapped around the side tube, such that a V portion of the second zig-zag stent is engaged about the acute angle of the junction, whereby the main lumen and the side tube are each kept open, independently, allowing fluid to flow freely therethrough.
Claims17
A stent graft comprising a tubular body defining a main lumen, at least one aperture in the tubular body of the main lumen and at least one side tube extending from the aperture defining a side tube lumen and in fluid communication with the main lumen, thereby defining a junction between the tubular body and the side tube, the junction including an acute angle of attachment, the tubular body and the side tube each including at least one self expanding zig-zag stent, 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 acute angle of the junction between the main lumen 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 acute angle of the junction between the main lumen and the side tube, whereby the main lumen and the side tube are each kept open, independently, allowing fluid to flow freely therethrough.
A stent graft comprising a tubular body defining a main lumen, at least one side tube extending from the tubular body defining a side tube lumen and in fluid communication with the main lumen, thereby defining a junction between the tubular body and the side tube, the junction including an acute angle of attachment, the stent graft further comprising a plurality of self expanding zig-zag stents, 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 acute angle of attachment of the junction between the main lumen 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 acute angle of the junction between the main lumen and the side tube, whereby the main lumen and the side tube are each independently kept open, allowing fluid to flow freely therethrough.
A stent graft including main tube and a side tube with an acute angled bifurcation therebetween and zig-zag stents fitted onto both the main tube and the side tube at the bifurcation with the bifurcation extending down into V portions of the respective zig-zag stents.
A stent graft comprising a main tube and a side tube extending from a bifurcation in the main tube and first zigzag stent fastened to and maintaining patency of the main tube atthe bifurcation and a second zigzag stent fastened to and maintaining patency of the side tube at the bifurcation, the first zigzag stent and the second zigzag stent being laterally adjacent at the bifurcation.
Dependencies are inferred from the claim text.