Selective adherence of stent-graft coverings
First Claim
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1. An endoluminal prosthesis, comprising:
- a stent including a plurality of interconnected elements and a plurality of interstices between adjacent elements;
a first generally tubular polymer member bonded to a second generally tubular polymer member through the interstices by a plurality of bonds, the stent positioned between the first and second polymer members; and
a plurality of pockets between adjacent bonds that permit movement of the stent within the pockets when the prosthesis is collapsed from a first diameter to a second diameter smaller than the first diameter wherein the stent has a length greater than the first and second polymer members.
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Abstract
An endoluminal prosthesis including a first polymer member bonded to a second polymer member to selectively encapsulate a stent. Selective bonding between the first and second polymer members results in unbonded regions or pockets that accommodate movement of the stent, permitting compression of the prosthesis using minimal force and enabling collapse of the prosthesis to a low profile. The pockets are believed to encourage enhanced cellular penetration for rapid healing and may contain bioactive substances.
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Citations
18 Claims
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1. An endoluminal prosthesis, comprising:
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a stent including a plurality of interconnected elements and a plurality of interstices between adjacent elements; a first generally tubular polymer member bonded to a second generally tubular polymer member through the interstices by a plurality of bonds, the stent positioned between the first and second polymer members; and a plurality of pockets between adjacent bonds that permit movement of the stent within the pockets when the prosthesis is collapsed from a first diameter to a second diameter smaller than the first diameter wherein the stent has a length greater than the first and second polymer members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An endoluminal prosthesis, comprising:
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a stent including a plurality of interconnected struts, each strut having a plurality of circumferentially arranged cells, each cell having an open region bounded by a border; a first generally tubular polymer member disposed adjacent an inner surface of the stent; and a second generally tubular polymer member disposed adjacent an outer surface of the stent, the first and second polymer members bonded to one another through the open regions of the cells to form a plurality of pockets in which portions of the struts are permitted movement when the prosthesis is collapsed from a first diameter to a second diameter smaller than the first diameter wherein the pockets having disposed therein at least one of a fluid and a bioactive substance.
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Specification