Stent element
First Claim
Patent Images
1. A stent graft comprising:
- i) a sleeve having a first end and a second end with a lumen extending therethrough;
ii) at least two unconnected ring stents attached to the sleeve a pre-selected distance apart; and
iii) a stent element having a central portion with at least two arms extending outwardly therefrom, wherein the stent element is attached to the sleeve so that it bridges the pre-selected distance between the ring stents.
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Accused Products
Abstract
There is provided a stent element comprising a central portion with two arms extending therefrom, optionally in a V-shaped or Y-shaped configuration. The arms of the stent-element are resiliently deformable to facilitate packing and suitable material for forming the stent-element is nitinol or PEEK. The stent element can be used to stabilise two adjacent ring stents on a stent graft by attachment to the graft material between the ring stents, for example by sewing. The stent element stabilises the ring stent without risk of fracture. A stent graft having two ring stents and the stent element located between the ring stents is also described.
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Citations
32 Claims
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1. A stent graft comprising:
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i) a sleeve having a first end and a second end with a lumen extending therethrough; ii) at least two unconnected ring stents attached to the sleeve a pre-selected distance apart; and iii) a stent element having a central portion with at least two arms extending outwardly therefrom, wherein the stent element is attached to the sleeve so that it bridges the pre-selected distance between the ring stents. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An implantable prosthesis comprising:
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i) a compliant and substantially fluid impervious tubular sleeve having a proximal end and a distal end with a conduit therethrough; ii) a first ring stent formed from multiple windings of wire of a shape memory material, attached to said sleeve at a first location; iii) a second ring stent formed from multiple windings of wire of a shape memory material, attached to said sleeve at a second location; and iv) a stent element having a central portion and at least two resilient arms extending therefrom, wherein a first portion of said stent element is attached to said sleeve at said first location, and wherein a second portion of said stent element is attached to said sleeve at said second location, wherein the first ring stent and the second ring stent are unconnected ring stents. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of treating a body lumen, said method comprising inserting a stent graft comprising:
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i) a sleeve having a first end and a second end with a lumen extending therethrough; ii) at least two unconnected ring stents attached to the sleeve a pre-selected distance apart; and iii) a stent element having a central portion with at least two arms extending outwardly therefrom, wherein the stent element is attached to the sleeve so that it bridges the distance between the ring stents. - View Dependent Claims (16, 17, 18, 19)
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20. A method of treating a patient in need thereof, said method comprising implanting a prosthesis comprising:
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i) a compliant and substantially fluid impervious tubular sleeve having a proximal end and a distal end with a conduit therethrough; ii) a first ring stent formed from multiple windings of wire of a shape memory material, attached to said sleeve at a first location; iii) a second ring stent formed from multiple windings of wire of a shape memory material, attached to said sleeve at a second location; and iv) a stent element having a central portion and at least two resilient arms extending therefrom, wherein a first portion of said stent element is attached to said sleeve at said first location, and wherein a second portion of said stent element is attached to said sleeve at said second location, wherein the first ring stent and the second ring stent are unconnected ring stents. - View Dependent Claims (21, 22, 23, 24)
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25. A method of manufacturing a prosthesis suitable for implantation into the body, said method comprising:
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(i) providing a flexible tubular conduit; (ii) attaching a stent element to said conduit such that said stent element is attached at two distinct locations on said conduit; (iii) attaching a first stent element to the conduit at or adjacent said first attachment point; and (iv) attaching a second ring stent to said conduit at or adjacent said second attachment point, wherein the first ring stent and the second ring stent are unconnected ring stents. - View Dependent Claims (26, 27, 28, 29)
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30. A stent graft comprising:
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a sleeve having a first end and a second end with a lumen extending therethrough; at least two ring stents attached to the sleeve a pre-selected distance apart; and a stent element having a central portion with at least two arms extending outwardly therefrom, wherein the stent element is attached to the sleeve such that it bridges the pre-selected distance between the at least two ring stents, and wherein the at least two ring stents are separate and distinct ring stents, and wherein the stent element is a separate and distinct component from the at least two ring stents.
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31. A stent graft comprising:
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a sleeve having a first end and a second end with a lumen extending therethrough; at least two ring stents attached to the sleeve a pre-selected distance apart; and a stent element having a central portion with at least two arms extending outwardly therefrom, wherein the stent element is attached to the sleeve such that it bridges the pre-selected distance between the at least two ring stents, and wherein the stent element is only attached to the sleeve.
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32. A stent graft comprising:
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a sleeve having a first end and a second end with a lumen extending therethrough; at least two ring stents attached to the sleeve a pre-selected distance apart; and a stent element having a central portion with at least two arms extending outwardly therefrom, wherein the stent element is attached to the sleeve such that it bridges the pre-selected distance between the at least two ring stents, and, wherein the stent element is not directly coupled to the at least two ring stents.
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Specification