Continuous double layered stent for migration resistance
First Claim
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1. A tubular stent comprising:
- a. an inner section comprising at least one first wire, the inner section defined by intersecting crossing points of the at least one first wire; and
b. a concentric outer section comprising at least one second wire, the outer section defined by intersecting crossing points of the at least one second wire;
wherein the inner section does not form a continuous connection with the outer section, andwherein the concentric outer section is folded over the inner section.
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Abstract
The present invention relates to stent structures having improved migration resistance. In particular, the invention relates to mesh stents, such as braided or twisted stent designs, where at least a portion of the stent is folded back over itself to form a multi-layered stent device. Such multi-layered portions provide for migration resistance, among other advantages.
27 Citations
16 Claims
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1. A tubular stent comprising:
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a. an inner section comprising at least one first wire, the inner section defined by intersecting crossing points of the at least one first wire; and b. a concentric outer section comprising at least one second wire, the outer section defined by intersecting crossing points of the at least one second wire; wherein the inner section does not form a continuous connection with the outer section, and wherein the concentric outer section is folded over the inner section. - View Dependent Claims (2, 3, 5, 7, 8, 9, 10, 11)
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4. A tubular stent comprising:
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an inner section comprising at least one first wire, the inner section defined by intersecting crossing points of the at least one first wire; a concentric outer section comprising at least one second wire, the outer section defined by intersecting crossing points of the at least one second wire; and at least one flared end; wherein the inner section does not form a continuous connection with the outer section, and wherein the concentric outer section is folded back over the inner section at an end opposite the flared end. - View Dependent Claims (12, 13, 14, 15, 16)
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6. A tubular stent comprising:
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an inner section comprising at least one first wire, the inner section defined by intersecting crossing points of the at least one first wire; and a concentric outer section comprising at least one second wire, the outer section defined by intersecting crossing points of the at least one second wire; wherein the inner section does not form a continuous connection with the outer section, and wherein the concentric outer section is folded over the inner section; wherein the inner and outer sections comprise 8 to 24 wires.
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Specification