Continuous double layered stent for migration resistance
First Claim
Patent Images
1. A stent comprising:
- a. a stent body having a generally cylindrical mesh segment, said mesh segment formed from at least one wire, and said wire forming a plurality of intersecting crossing points to define an open lattice tubular wall; and
b. at least a portion of said open lattice tubular wall being inverted upon itself to form a multi-layered, generally cylindrical mesh segment,wherein an end of said stent body axially opposite said portion of said tubular wall being inverted upon itself is flared.
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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.
56 Citations
17 Claims
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1. A stent comprising:
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a. a stent body having a generally cylindrical mesh segment, said mesh segment formed from at least one wire, and said wire forming a plurality of intersecting crossing points to define an open lattice tubular wall; and b. at least a portion of said open lattice tubular wall being inverted upon itself to form a multi-layered, generally cylindrical mesh segment, wherein an end of said stent body axially opposite said portion of said tubular wall being inverted upon itself is flared. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A tubular stent comprising:
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a. an inner section comprising at least one first wire, said section defined by intersecting crossing points of said at least one first wire; and b. a concentric outer section comprising at least one second wire, said section defined by intersecting crossing points of said at least one second wire; wherein said outer section forms a continuous connection with said inner section, and wherein said tubular stent comprises said concentric outer section being folded over said inner section. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A stent comprising:
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a. a stent body having a generally cylindrical mesh segment, said mesh segment formed from at least one wire, and said wire forming a plurality of intersecting crossing points to define an open lattice tubular wall; and b. at least a portion of said open lattice tubular wall being inverted upon itself to form a multi-layered, generally cylindrical mesh segment, wherein an end of said stent body axially opposite said portion of said tubular wall being inverted upon itself is tapered.
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Specification