Stents having radiopaque mesh
AssigneeCovidien LP
InventorsSteven G. Zaver, Brian S. Carion, Richard S. Kusleika
Life of this patent
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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.
Claims22
A device for filtering emboli from blood flowing through a lumen defined by the walls of a vessel in a patient's body, comprising:
- a filter element being expandable from a collapsed configuration when the filter element is restrained to an expanded configuration when the filter element is unrestrained, wherein the filter element comprises a mesh comprising strands, each strand having a cross-sectional dimension, the mesh comprising at least one radiopaque strand and at least one non-radiopaque strand, the at least one radiopaque strand and the at least one non-radiopaque strand each having different cross-sectional dimensions, and wherein a Young's modulus of the at least one radiopaque strand is different than a Young's modulus of the at least one non-radiopaque strand.
A mesh comprising strands, each strand having a diameter, the mesh comprising at least one radiopaque strand and at least one non-radiopaque strand, the at least one radiopaque strand and the at least one non-radiopaque strand each having different cross-sectional dimensions, and wherein a Young's modulus of the non-radiopaque strand is different than a Young's modulus of the radiopaque strand.
Dependencies are inferred from the claim text.