Non-cylindrical variable pitch mesh top stent
First Claim
1. A stent, comprising:
- a plurality of intersecting elongated members arranged to form a plurality of cells, at least some of the plurality of cells forming a tube with a lumen running therethrough, wherein the tube comprises first and second sections, the first section having a substantially constant first diameter, the second section having a second diameter that is larger than the first diameter, the tube comprising a transition section between the first and second sections, the transition section having a concave curvature extending proximally from the first section toward the second section and a convex curvature extending proximally from the concave curvature to the second section, wherein the second section has a first tier of elongate cells of the plurality of elongate cells having a first shape and rounded proximal apices and a second tier of elongate cells of the plurality of cells having a second shape different from the first shape,wherein the first section has multiple tiers of diamond shaped cells of the plurality of cells, the multiple tiers each having a length less than each of the first and second tiers of elongate cells,wherein the first section exhibits a greater force of radial expansion than the second section, andwherein the rounded proximal apices of the first tier extend inwardly toward a center of the stent.
4 Assignments
0 Petitions
Accused Products
Abstract
A stent is provided having a plurality of intersecting elongated members arranged to form a plurality of cells, which define an elongated tube with a lumen. The elongated tube has first and second sections, the first section having a substantially constant first diameter, the second section having a substantially constant second diameter that is larger than the first diameter. The elongated tube also has a transition section between the first and second sections, the transition section having a concave curvature extending proximally from the first section and a convex curvature extending proximally from the concave curvature to the second portion. A proximal end of the second section has a plurality of rounded ends formed by the plurality of intersecting elongated members. Each of the plurality of cells within the first section have a pitch that is tighter than each of the plurality of cells within the second section.
21 Citations
24 Claims
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1. A stent, comprising:
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a plurality of intersecting elongated members arranged to form a plurality of cells, at least some of the plurality of cells forming a tube with a lumen running therethrough, wherein the tube comprises first and second sections, the first section having a substantially constant first diameter, the second section having a second diameter that is larger than the first diameter, the tube comprising a transition section between the first and second sections, the transition section having a concave curvature extending proximally from the first section toward the second section and a convex curvature extending proximally from the concave curvature to the second section, wherein the second section has a first tier of elongate cells of the plurality of elongate cells having a first shape and rounded proximal apices and a second tier of elongate cells of the plurality of cells having a second shape different from the first shape, wherein the first section has multiple tiers of diamond shaped cells of the plurality of cells, the multiple tiers each having a length less than each of the first and second tiers of elongate cells, wherein the first section exhibits a greater force of radial expansion than the second section, and wherein the rounded proximal apices of the first tier extend inwardly toward a center of the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A stent graft, comprising:
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a tube of graft material having an inner lumen; a non-cylindrical stent attached to the graft comprising a plurality of intersecting elongated members arranged to form a plurality of cells, the plurality of cells forming a tube with a lumen running therethrough, wherein the tube comprises first and second sections, the first section having a substantially constant first diameter, the second section having a second diameter that is larger than the first diameter, the tube comprising a transition section between the first and second sections, the transition section having a concave curvature extending proximally from the first section toward the second section and a convex curvature extending proximally from the concave curvature to the second section, wherein the second section has a first tier of elongate cells of the plurality of elongate cells having a first shape and rounded proximal apices and a second tier of elongate cells of the plurality of cells having a second shape different from the first shape, wherein the first section has multiple tiers of diamond shaped cells of the plurality of cells, the multiple tiers each having a length less than each of the first and second tiers of elongate cells, wherein the first section exhibits a greater force of radial expansion than the second section, and wherein the second section comprises a mid-section between the distal end and the proximal end, wherein the mid-section has a diameter that is greater than the diameter of the stent distal end of the second section and the proximal end of the second section, and wherein the rounded proximal apices of the first tier extend inwardly toward a center of the non-cylindrical stent; and a cylindrical stent disposed distally of the first stent and having a configuration different from the first stent. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A stent graft, comprising:
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a stent, comprising; a plurality of intersecting elongated members arranged to form a plurality of cells, at least some of the plurality of cells forming a tube with a lumen running therethrough, wherein the tube comprises first and second sections, the first section having a substantially constant first diameter, the second section having a second diameter that is larger than the first diameter, the tube comprising a transition section between the first and second sections, the transition section having a concave curvature extending proximally from the first section toward the second section and a convex curvature extending proximally from the concave curvature to the second section, wherein the second section has a first tier of elongate cells of the plurality of elongate cells having a first shape and rounded proximal apices and a second tier of elongate cells of the plurality of cells having a second shape different from the first shape, a tube of graft material attached to a portion of the stent, wherein the first section has multiple tiers of diamond shaped cells of the plurality of cells, the multiple tiers each having a length less than each of the first and second tiers of elongate cells, wherein the first section exhibits a greater force of radial expansion than the second section, and wherein the rounded proximal apices of the first tier extend inwardly toward a center of the stent, wherein the elongate cells of the second tier are adjacent cells of the first tier and are adjacent cells of the first section, wherein the tube of graft material has a proximal edge disposed at or adjacent the transition section. - View Dependent Claims (24)
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Specification