TEXTILE GRAFT FOR IN SITU FENESTRATION
First Claim
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1. An implantable graft comprising:
- a main graft body forming a lumen with a proximal end and a distal end;
where at least a portion of the lumen is defined by a woven fabric comprising yarns aligned in a first direction interwoven with yarns aligned in a second direction;
where the woven fabric further comprises a main portion and at least one reduced yarn density region disposed between the proximal and distal end; and
where, although at least some yarns traverse the reduced yarn density region, the reduced yarn density region is defined by having a lower yarn density than the main portion.
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Abstract
The disclosure relates to an implantable woven graft for bridging a defect in a main vessel near one or more branch vessels. The graft includes a region of reduced yarn density. Reduced yarn density regions are alignable with at least one of the one or more branch vessels, and are suitable for in situ fenestration, for example by perforation. The disclosed examples are particularly suited for bridging abdominal aortic aneurysms.
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Citations
20 Claims
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1. An implantable graft comprising:
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a main graft body forming a lumen with a proximal end and a distal end; where at least a portion of the lumen is defined by a woven fabric comprising yarns aligned in a first direction interwoven with yarns aligned in a second direction; where the woven fabric further comprises a main portion and at least one reduced yarn density region disposed between the proximal and distal end; and where, although at least some yarns traverse the reduced yarn density region, the reduced yarn density region is defined by having a lower yarn density than the main portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An implantable prosthesis for treatment of a main vessel defect near one or more branch vessels, said prosthesis comprising:
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a graft comprising yarns aligned in a first direction interwoven with yarns aligned in a second direction, the woven yarns defining a lumen with a proximal end and a distal end, a main portion and at least one passage disposed between the proximal and distal end; and where, although at least some yarns traverse the passage, the passage is defined by having a lower yarn density than the main portion. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A method of bridging a defect in a main vessel near at least one branch vessel comprising:
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providing a prosthesis comprising at least one stent and an implantable textile graft comprising yarns aligned in a first direction interwoven with yarns aligned in a second direction, said woven yarns defining a lumen with a main portion and at least one reduced yarn density region, wherein the reduced yarn density region has a yarn density lower than the main portion; deploying the prosthesis into the main vessel of a patient in need thereof such that the reduced yarn density region is aligned with the at least one branch vessel; perforating the at least one reduced yarn density region to define a passageway from the main vessel to the at least one branch vessel.
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Specification