Low profile thermally set wrapped cover for a percutaneously deployed stent
First Claim
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1. An endoprosthesis assembly for implantation at a treatment site within a patient'"'"'s body, the assembly comprising:
- a) an expandable stent releasably affixed to a delivery catheter, the stent being in a first configuration during deployment of the assembly to the treatment site and adapted to be expanded to a second expanded configuration and to detach from the catheter during implantation of the assembly at the treatment site; and
b) a stent cover affixed to the stent and wrapped around an outer surface of the stent when the stent is in the first configuration, the cover being releasably set to maintain a wrapped configuration during deployment of the assembly to the treatment site within the body and adapted to at least partially unwrap during implantation to conform to the outer surface of the stent when the stent is expanded to the second expanded configuration, the stent cover being wrapped around the outer surface of the stent such that the stent cover has a substantially uniform cross sectional area over an entire length of the stent cover along a longitudinal axis of the stent cover when the stent cover is in the wrapped configuration.
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Abstract
An endoprosthesis assembly for percutaneous deployment on a balloon catheter is disclosed. The assembly includes a radially expandable stent overlied by a tubular, low profile stent cover wrapped over the stent. The wrapped cover is thermally set to maintain its low profile wrapped configuration during deployment of the assembly. At the treatment site, the balloon portion of the catheter is inflated causing the stent to expand radially and the stent cover to unwrap and open to conform to the expanded configuration of the stent.
88 Citations
16 Claims
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1. An endoprosthesis assembly for implantation at a treatment site within a patient'"'"'s body, the assembly comprising:
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a) an expandable stent releasably affixed to a delivery catheter, the stent being in a first configuration during deployment of the assembly to the treatment site and adapted to be expanded to a second expanded configuration and to detach from the catheter during implantation of the assembly at the treatment site; and b) a stent cover affixed to the stent and wrapped around an outer surface of the stent when the stent is in the first configuration, the cover being releasably set to maintain a wrapped configuration during deployment of the assembly to the treatment site within the body and adapted to at least partially unwrap during implantation to conform to the outer surface of the stent when the stent is expanded to the second expanded configuration, the stent cover being wrapped around the outer surface of the stent such that the stent cover has a substantially uniform cross sectional area over an entire length of the stent cover along a longitudinal axis of the stent cover when the stent cover is in the wrapped configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An endoprosthesis assembly for implantation at a treatment site within a patient'"'"'s body, the assembly comprising:
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a) a stent having a first unexpanded configuration for deployment of the assembly to the treatment site and adapted to be expanded to a second expanded configuration for implantation of the assembly at the treatment site; and b) a stent cover affixed to the stent and wrapped around an outer surface of the stent when the stent is in the first unexpanded configuration, the cover being thermally set to maintain a wrapped configuration during deployment of the assembly to the treatment site within the body and adapted to at least partially unwrap during implantation to conform to the outer surface of the stent when the stent is expanded to the second expanded configuration.
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15. A stent delivery assembly comprising:
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a) a delivery catheter; b) an expandable stent releasably affixed to a delivery catheter, the stent being in a first configuration during deployment of the assembly to the treatment site and adapted to be expanded to a second expanded configuration and to detach from the catheter during implantation of the assembly at the treatment site; and c) a stent cover affixed to the stent and wrapped around an outer surface of the stent when the stent is in the first configuration, the cover being releasably set to maintain a wrapped configuration during deployment of the assembly to the treatment site within the body and adapted to at least partially unwrap during implantation to conform to the outer surface of the stent when the stent is expanded to the second expanded configuration, the stent cover having a uniform cross sectional area over an entire length of the stent cover along a longitudinal axis of the stent cover when the stent cover is in the wrapped configuration. - View Dependent Claims (16)
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Specification