Stents having radiopaque mesh
First Claim
1. A stent comprising a mesh, the mesh comprising at least one radiopaque strand and at least one non-radiopaque strand, the at least one radiopaque strand having a cross-sectional dimension D1 and the at least one non-radiopaque strand having a cross-sectional dimension D2 less than the cross-sectional dimension D1, wherein the mesh comprises pores and when the mesh is at rest in free space no pore adjacent to the at least one radiopaque strand has an area more than two times the mesh pore size, the mesh pore size being the average area of five pores serially adjacent to the pore.
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Accused Products
Abstract
A stent including a mesh made of strands. The mesh has at least one radiopaque strand and at least one non-radiopaque strand, and the at least one radiopaque strand and the at least one non-radiopaque strand each have different diameters. Each strand has an index of wire stiffness EI, where EI is the mathematical product of the Young'"'"'s modulus (E) and the second moment of area (I). The EI of all strands in the mesh is no more than five times the EI of the strand having the smallest EI of any of the strands.
708 Citations
26 Claims
- 1. A stent comprising a mesh, the mesh comprising at least one radiopaque strand and at least one non-radiopaque strand, the at least one radiopaque strand having a cross-sectional dimension D1 and the at least one non-radiopaque strand having a cross-sectional dimension D2 less than the cross-sectional dimension D1, wherein the mesh comprises pores and when the mesh is at rest in free space no pore adjacent to the at least one radiopaque strand has an area more than two times the mesh pore size, the mesh pore size being the average area of five pores serially adjacent to the pore.
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14. A method comprising:
expanding, against a wall of a vessel in a body of a patient, a stent comprising a mesh, the stent comprising a mesh, the mesh comprising at least one radiopaque strand and at least one non-radiopaque strand, the at least one radiopaque strand having a cross-sectional dimension D1 and the at least one non-radiopaque strand having a cross-sectional dimension D2 less than the cross-sectional dimension D1, wherein the mesh comprises pores and when the mesh is at rest in free space no pore adjacent to the at least one radiopaque strand has an area more than two times the mesh pore size, the mesh pore size being the average area of five pores serially adjacent to the pore. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
Specification