Woven vascular graft
AssigneeVascutec Corporation
InventorsIbrahim M. Ibrahim, Indu Kapadia
Life of this patent
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Abstract
A vascular graft prosthesis of woven synthetic yarn where selected fill threads are woven into S-shaped lock elements about selected warp threads to provide a tubular fabric that resists fraying when cut at an oblique angle.
Claims16
A vascular graft prosthesis comprising a tube formed of woven fabric and attachable into a vascular system for conveyance of blood therethrough, the fabric comprising a weave having a plurality of warp threads running in the axial or warp direction of the tube and a plurality of standard fill threads running in a direction transverse to said axial direction, the improvement in combination therewith of a plurality of lock weave elements for reducing fraying when said fabric is cut, each lock weave element formed by a portion of one of said standard fill threads woven in an initial fill direction and transversing two adjacent first and second of said warp threads, said portion looped about said second warp thread and extending back in a direction opposite of said initial fill direction traversing said second and first warp threads, said portion then looped about said first warp thread and extending in said initial fill direction and traversing said first and second warp threads, said portion then continuing in said initial fill direction as a standard fill thread in said weave.
A vascular graft prosthesis comprising a tube formed of woven fabric and attachable into a vascular system for conveyance of blood therethrough, the fabric comprising a weave having a plurality of warp threads running in the axial or warp direction of the tube and a plurality of standard fill threads running in a direction transverse to said axial direction, the improvement in combination therewith of a plurality of lock weave elements for reducing fraying when said fabric is cut, each lock weave element formed by a portion of one of said standard fill threads woven in an initial fill direction and traversing at least two adjacent warp threads, the first and last of said warp threads in the transverse direction being designated first and last warp threads, said portion looped about said last warp thread and extending back in a direction opposite of said initial fill direction traversing said at least two warp threads, said portion then looped about said first warp thread and extending in said initial fill direction and traversing said at least two warp threads, said portion then continuing in said initial fill direction as a standard fill thread in said weave.
Dependencies are inferred from the claim text.