Variable weave graft with metal strand reinforcement for in situ fenestration
AssigneesCook Incorporated, Wiiliam Cook Europe ApS
InventorsShyam Kuppurathanam, David P. Biggs, Krasnodar Ivancev, Peter Harris
Life of this patent
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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 density. Reduced 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.
Claims20
An implantable prosthesis comprising:
- a 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 textile strands and metal strands aligned in a first direction interwoven with textile strands and metal strands aligned in a second direction;
- where the woven fabric further comprises a main portion and at least one reduced density region;
- where, the main portion has a weave density that is greater than the weave density of the reduced density region;
- and
- where the metal strands are interwoven in at least the main portion and aligned with the reduced density region.
An implantable prosthesis for treatment of a main vessel defect near one or more branch vessels, the prosthesis comprising:
- a graft comprising textile strands aligned in a first direction interwoven with textile strands and metal strands aligned in a second direction, the woven strands 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;
- where the metal strands are aligned with the at least one passage and woven in at least the main portion;
- and
- where, although at least some textile strands traverse the at least one passage, the passage is defined by having a lower weave density than the main portion.
The prosthesis of claim 13, further comprising at least two stents attached to the graft, one of which is attached between the distal end and the passage, the other of which is attached between the proximal end and the passage.
A method of bridging a defect in a main vessel near at least one branch vessel comprising:
- providing a prosthesis comprising at least one stent and an implantable variable weave graft comprising textile strands and metal strands aligned in a first direction interwoven with textile strands and metal strands aligned in a second direction, the woven strands defining a lumen with a main portion and at least one reduced density region, where the reduced density region has a weave density lower than the main portion weave density;
- deploying the prosthesis into the main vessel of a patient in need thereof such that the reduced density region is aligned with the at least one branch vessel;
- perforating the at least one reduced density region to define a passageway from the main vessel to the at least one branch vessel.
Dependencies are inferred from the claim text.