Kink resistant stent-graft
First Claim
1. A stent-graft comprising:
- a substantially tubular shaped stent member having an inner surface, an outer surface, and configured from multiple turns of an undulating element, said stent member having substantially in-phase undulations;
a generally tubular graft member arranged within said stent member; and
a ribbon adhered in contact with only a portion of at least one of the inner and outer surfaces of said stent member and securing the stent member and graft member to one another thereby permitting unrestrained movement of at least a portion of at least one of said undulations relative to at least said graft member.
1 Assignment
0 Petitions
Accused Products
Abstract
A stent-graft including a stent member having an inner surface and an outer surface, a generally tubular graft member and a coupling member that couples the stent member to the graft member. The coupling member, which is the preferred embodiment is in the form of a ribbon, covers only a portion of the inner or outer surface of the stent member and secures the stent member and graft member to one another. Alternatively, the coupling member can be described as interconnecting less than entirely the inner or outer surface of the graft member to the stent member. With this construction, regions of the stent member do not interfere with the coupling member. Shear stresses between the stent member and the coupling member and the risk of tearing the graft or coupling member or delamination therebetween may be reduced as compared to a fully enveloped stent member. This construction also provides improved flexibility and kink resistance.
696 Citations
26 Claims
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1. A stent-graft comprising:
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a substantially tubular shaped stent member having an inner surface, an outer surface, and configured from multiple turns of an undulating element, said stent member having substantially in-phase undulations;
a generally tubular graft member arranged within said stent member; and
a ribbon adhered in contact with only a portion of at least one of the inner and outer surfaces of said stent member and securing the stent member and graft member to one another thereby permitting unrestrained movement of at least a portion of at least one of said undulations relative to at least said graft member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A stent-graft comprising:
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an undulating stent member with substantially in-phase undulations having an inner surface and an outer surface;
a generally tubular graft member having an inner surface and an outer surface, one of said stent and graft members surrounding at least a portion of the other; and
a discrete ribbon adhered to at least one of said inner and outer surfaces of said stent member to attach said stent member and graft member to one another. - View Dependent Claims (21, 22, 23)
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24. A stent-graft comprising:
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a generally tubular stent member having inner and outer circumferences, said stent member including a first member and second member, said first member being arranged in a helical configuration with multiple helical turns and having multiple undulations, each having an apex, said second member being threaded through adjacent apexes in adjacent turns to maintain undulations in adjacent turns generally in-phase with one anther;
a generally flat ribbon helically arranged and disposed to contact at least one of said inner and outer circumferences of said stent member and forming multiple windings spaced from one anther; and
a generally tubular graft member disposed between said stent member and said helically arranged ribbon and including portions secured to said ribbon. - View Dependent Claims (25)
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26. A method of deploying a stent graft comprising the steps of:
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(a) providing a stent-graft having a substantially tubular stent member having an inner surface, an outer surface, and configured from multiple turns of an undulating element, said stent member having substantially in-phase undulations;
a generally tubular graft member arranged within said stent member; and
a ribbon adhered in contact with only a portion of at least one of the inner and outer surfaces of said stent member and securing the stent member and graft member to one another thereby permitting unrestrained movement of at least a portion of at least one undulation relative to at least said graft member;
(b) positioning said stent-graft at a site in a mammal; and
(c) deploying said stent-graft at said site.
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Specification