Stents for blood vessels
AssigneeImperial College of Science, Technology and Medicine
InventorsDenis Joseph Doorly, Colin Gerald Caro, Mary Anne McLean
Life of this patent
Estimating the term…
Abstract
A stent for supporting part of a blood vessel which stent includes a supporting portion around which or within which part of a blood vessel intended for grafting can be placed so that the stent internally or externally supports that part and the supporting portion of the stent is of a shape and/or orientation whereby flow between graft and host vessel is caused to follow a non-planar curve. By maintaining non-planar curvature in the graft itself, favorable blood flow velocity patterns can be achieved through generation therein of ‘swirl’ flow. Failures in such grafts through blockage, kinking or collapse, can be significantly reduced.
Claims9
A stent for supporting part of a graft which stent includes a supporting portion around which or within which an associated graft can be placed so that the stent internally or externally supports the associated graft and the supporting portion of the stent is fabricated to incorporate a non-planar curved form whereby flow between the associated graft and an associated host vessel is caused to follow a non-planar curve and including a further supporting portion, around which or within which the associated host vessel can be placed, for locating the associated graft wherein said supporting portion is fabricated to impose a geometric arrangement at a junction between said supporting portion and said further supporting portion whereby a tangent vector projected from a centerline of the associated graft, at said junction, does not intersect a centerline of the associated vessel by consequence of an asymmetric disposition of the further supporting portion with respect to the supporting portion at said junction.
A stent for supporting part of a graft which stent includes a supporting portion around which or within which an associated graft can be placed so that the stent internally or externally supports the associated graft and the supporting portion of the stent is fabricated to incorporate a non-planar curved form whereby flow between the associated graft and an associated host vessel is caused to follow a non-planar curve and further comprising a first supporting structure adapted to support or otherwise contact part of the vessel to be bypassed, and a secondary supporting structure extending angularly away from the first supporting structure, but simultaneously capable of supporting the graft vessel part, said secondary structure capable of maintaining a graft vessel part when located therein in non-planar curvature.
A stent for supporting part of a graft which stent includes a supporting portion around which or within which an associated graft can be placed so that the stent internally or externally supports the associated graft and the supporting portion of the stent is fabricated to incorporate a non-planar curved form whereby flow between the associated graft and an associated host vessel is caused to follow a non-planar curve and comprising a further supporting portion (1) adapted to support or otherwise contact part of a vessel to be bypassed, with the supporting portion extending annularly away from the further supporting portion (1).
Dependencies are inferred from the claim text.