Low profile non-symmetrical stent
First Claim
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1. A stent graft comprising:
- a tube of graft material having a proximal end and a distal end;
a plurality of stents attached to the tube of graft material between the proximal and distal ends;
a first stent of the plurality of stents, the first stent comprising a plurality of proximal apices and a plurality of distal apices, where each proximal apex comprises a first curved portion and each distal apex defines a second curved portion, where in the first curved portion and the second curved portion each comprises a radius of curvature, and the radius of curvature of the proximal apices is greater than the radius of curvature of the distal apices;
a second stent of the plurality of stents disposed immediately adjacent and distal of the first stent, the second stent comprising a plurality of distal apices and a plurality of proximal apices, where each distal apex comprises a first curved portion and each proximal apex defines a second curved portion, where in the first curved portion and the second curved portion each comprises a radius of curvature, and the radius of curvature of the distal apices is greater than the radius of curvature of the proximal apices;
wherein each distal apex of the first stent substantially abuts a proximal apex of the second stent; and
wherein the radius of curvature of the distal apices of the first stent and the radius of curvature of the proximal apices of the second stent is from about 0.5 mm to about 1.5 mm, and wherein the wherein the radius of curvature of the proximal apices of the first stent and the radius of curvature of the distal apices of the second stent is from about 4 mm to about 9 mm.
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Abstract
A stent for use in a medical procedure having opposing sets of curved apices, where the curved section of one set of apices has a radius of curvature that is greater than the curved section of the other set of apices. One or more such stents may be attached to a graft material for use in endovascular treatment of, for example, aneurysm, thoracic dissection, or other body vessel condition.
192 Citations
24 Claims
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1. A stent graft comprising:
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a tube of graft material having a proximal end and a distal end; a plurality of stents attached to the tube of graft material between the proximal and distal ends; a first stent of the plurality of stents, the first stent comprising a plurality of proximal apices and a plurality of distal apices, where each proximal apex comprises a first curved portion and each distal apex defines a second curved portion, where in the first curved portion and the second curved portion each comprises a radius of curvature, and the radius of curvature of the proximal apices is greater than the radius of curvature of the distal apices; a second stent of the plurality of stents disposed immediately adjacent and distal of the first stent, the second stent comprising a plurality of distal apices and a plurality of proximal apices, where each distal apex comprises a first curved portion and each proximal apex defines a second curved portion, where in the first curved portion and the second curved portion each comprises a radius of curvature, and the radius of curvature of the distal apices is greater than the radius of curvature of the proximal apices; wherein each distal apex of the first stent substantially abuts a proximal apex of the second stent; and wherein the radius of curvature of the distal apices of the first stent and the radius of curvature of the proximal apices of the second stent is from about 0.5 mm to about 1.5 mm, and wherein the wherein the radius of curvature of the proximal apices of the first stent and the radius of curvature of the distal apices of the second stent is from about 4 mm to about 9 mm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A stent graft comprising:
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a tube of graft material having a first end and a second end; a plurality of stents attached to the graft material between the first and second ends, first and second stents of the plurality of stents being disposed directly adjacent one another and entirely between the first and second ends of the tube of graft material; wherein the first stent has proximal apices and distal apices each having a curve, wherein the curve of the proximal apices of the first stent is greater than the curve of the distal apices of the first stent; wherein the second stent has proximal and distal apices each having a curve, where the curve of the distal apices of the second stent is greater than the curve of the proximal apices of the second stent; wherein the distal apices of the first stent substantially abut the proximal apices of the second stent; wherein each of the proximal apices of the first stent has a rounded inner radius and each of the distal apices of the second stent has a rounded inner radius directly opposite a rounded inner radius of a proximal apex of the first stent, and wherein an area of unstented graft material is disposed between the rounded inner radii of the proximal apices of the first stent and the rounded inner radii of the distal apices of the second stent, and wherein each of the proximal and distal apices of the first stent having a radius of curvature, and each of the proximal and distal apices of the second stent have a radius of curvature, wherein the radius of curvature of the distal apices of the first stent and the radius of curvature of the proximal apices of the second stent is from about 0.5 mm to about 1.5 mm, and wherein the wherein the radius of curvature of the proximal apices of the first stent and the radius of curvature of the distal apices of the second stent is from about 4 mm to about 9 mm. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification