Stent graft
First Claim
1. A stent graft system comprising:
- a stent having a flow lumen therethrough;
a first inner graft supported along at least a portion of the length of the stent, the first inner graft comprising an outside surface and an inside surface;
one or more openings extending through a wall of the first inner graft;
one or more valve members in communication with the one or more openings prior to inflating an outer graft, the one or more valve members being configured to permit blood to flow from the flow lumen through the one or more openings and into a space between the first inner graft and the outer graft when the one or more valve members are in communication with the one or more openings, and to at least inhibit the flow of blood from the space through the one or more openings and into the flow lumen,the one or more valve members each comprising a respective valve portion attached to a second inner graft and being positioned radially outward of the outside surface of the first inner graft when inhibiting the flow of blood from the space through the one or more openings and into the flow lumenwherein the outer graft is positioned around the stent and configured to cover at least the one or more openings, the outer graft being configured to inflate to a wall of an aneurysm sac when blood flows from the flow lumen and through the one or more openings into the space.
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Accused Products
Abstract
Some embodiments are directed to a stent graft comprising a first stent graft having a first and a second stent and a first and a second inner graft supported by the first stent, and an outer graft. The second inner graft can be spaced apart from the first inner graft so that a portion of the first stent is not covered by either the first inner graft or the second inner graft. A first and second portion of the outer graft can be attached to the first stent, the outer graft being unsupported by the stent between the first and second portions so as to form a fillable space between the outer graft, the first inner graft, and the second inner graft. Some embodiments further comprise a second stent graft deployable within the inside of the first stent graft to sealingly cover the uncovered portion of the first stent.
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Citations
20 Claims
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1. A stent graft system comprising:
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a stent having a flow lumen therethrough; a first inner graft supported along at least a portion of the length of the stent, the first inner graft comprising an outside surface and an inside surface; one or more openings extending through a wall of the first inner graft; one or more valve members in communication with the one or more openings prior to inflating an outer graft, the one or more valve members being configured to permit blood to flow from the flow lumen through the one or more openings and into a space between the first inner graft and the outer graft when the one or more valve members are in communication with the one or more openings, and to at least inhibit the flow of blood from the space through the one or more openings and into the flow lumen, the one or more valve members each comprising a respective valve portion attached to a second inner graft and being positioned radially outward of the outside surface of the first inner graft when inhibiting the flow of blood from the space through the one or more openings and into the flow lumen wherein the outer graft is positioned around the stent and configured to cover at least the one or more openings, the outer graft being configured to inflate to a wall of an aneurysm sac when blood flows from the flow lumen and through the one or more openings into the space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A stent graft system comprising:
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a stent comprising a flow lumen; a first graft supported by the stent; a second graft positioned over an outside surface of the first graft; wherein; the first graft comprises a porous material comprising a plurality of pores and is sized to cover at least a portion of the length of the stent; and a first portion and a second portion of the second graft are attached to the stent, the second graft being unsupported by the stent between the first and the second portions so as to form a fillable space between the second graft and the first graft, the second graft being configured to inflate when a fluid fills the fillable space;
the second graft is configured such that prior to inflating the second graft, a third portion of the second graft does not touch a wall of an aneurysm sac, and after inflating the second graft, the third portion of the second graft touches the wall of the aneurysm sac, anda valve member comprising an exterior portion, wherein the exterior portion is configured to cover at least a portion of the outside surface of the first graft and at least one pore of the plurality of pores, the valve member is configured to at least inhibit the flow of blood from the fillable space to the flow lumen. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification