Covered stent with encapsulated ends
First Claim
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1. A flexible covered stent, comprising:
- a stent comprising a plurality of ring stents, each of said ring stents joined to an adjacent of said ring stents by at least one joining point, wherein said joining point is integral therewith;
a first layer of biocompatible material, covering at least a portion of a first surface of said stent; and
a second layer of biocompatible material, covering at least a portion of a second surface of said stent, said second layer having a length less than a length of said first layer, said second layer being positioned at a first end region of said stent, leaving at least a mid portion of said second surface of said stent uncovered, wherein said second layer is bonded to said first layer;
wherein said length of said first layer is less than the longitudinal length of said stent such that at least one extremity of said stent is left uncovered by said first layer, wherein said uncovered extremity flares outward with respect to a longitudinal axis of the flexible covered stent upon expansion thereof.
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Abstract
A flexible covered stent includes a stent covered on a first surface by a first layer of biocompatible material and on a second surface by a second layer of biocompatible material, the first and second layers of biocompatible material being bonded to one another through a wall in the stent. The first layer of biocompatible material is longer than the second layer of biocompatible material such that at least a portion of the second surface of the stent is left uncovered, imparting flexibility to the stent. A mid portion of the second surface of the stent can be left uncovered to impart flexibility to the stent similar to that enjoyed by a bare stent.
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Citations
7 Claims
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1. A flexible covered stent, comprising:
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a stent comprising a plurality of ring stents, each of said ring stents joined to an adjacent of said ring stents by at least one joining point, wherein said joining point is integral therewith;
a first layer of biocompatible material, covering at least a portion of a first surface of said stent; and
a second layer of biocompatible material, covering at least a portion of a second surface of said stent, said second layer having a length less than a length of said first layer, said second layer being positioned at a first end region of said stent, leaving at least a mid portion of said second surface of said stent uncovered, wherein said second layer is bonded to said first layer;
wherein said length of said first layer is less than the longitudinal length of said stent such that at least one extremity of said stent is left uncovered by said first layer, wherein said uncovered extremity flares outward with respect to a longitudinal axis of the flexible covered stent upon expansion thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification