Variable density braid stent
First Claim
1. A stent comprising:
- at least one stent member, the at least one stent member interwoven to form a substantially tubular body, the substantially tubular body defining a flow path therethrough, the substantially tubular body comprising a first region and a second region, the second region being immediately adjacent to the first region, in the first region the at lease one stent member defining a plurality of first region openings, in the second region at least one first portion of the at least one member and at least one second portion of the at least one member being engaged together to form at least one primary braid, the at least one primary braid defining a plurality of second region openings, at least one of the plurality of second region openings being in bodily fluid communication with the flow path, the plurality of second region openings providing the second region with a greater porosity than the first region.
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Accused Products
Abstract
A stent comprises at least one stent member woven to form a substantially tubular body that defines a flow path. The tubular body comprises a first region and a second region. In the first region the at least one stent member defines a plurality of first region openings and in the second region at least one first portion of the at least one member and at least one second portion of the at least one member are engaged together to form at least one primary strand. The at least one primary strand defines a plurality of second region openings. The at least one of the plurality of second region openings is in fluid communication with the flow path. The plurality of second region openings provide the second region with a greater porosity than the first region.
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Citations
35 Claims
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1. A stent comprising:
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at least one stent member, the at least one stent member interwoven to form a substantially tubular body, the substantially tubular body defining a flow path therethrough, the substantially tubular body comprising a first region and a second region, the second region being immediately adjacent to the first region, in the first region the at lease one stent member defining a plurality of first region openings, in the second region at least one first portion of the at least one member and at least one second portion of the at least one member being engaged together to form at least one primary braid, the at least one primary braid defining a plurality of second region openings, at least one of the plurality of second region openings being in bodily fluid communication with the flow path, the plurality of second region openings providing the second region with a greater porosity than the first region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17)
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18. (canceled)
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19. (canceled)
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20. (canceled)
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21. (canceled)
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22. A stent for insertion into a body lumen having at least one aneurysm therein, the stent comprising:
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at least one stent member, the at least one stent member forming a substantially tubular body, the substantially tubular body defining a flow path therethrough, the substantially tubular body comprising a first region and a second region longitudinally and immediately adjacent thereto, in the first region the at least one stent member defining a plurality of first region openings, in the second region the at least one stent member defining a plurality of second region openings, each of the plurality of first region openings being smaller in area than each of the plurality of second region openings, the area of each first region opening being sized to restrict passage of blood from the flow path through the first region openings to cause stagnation of the at least one aneurysm adjacent to the first region, the area of each second region opening being sized to allow free flow of blood through the second region openings to at least one perforator vessel adjacent to the second region. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A stent for insertion into a body lumen having at least one aneurysm therein, the stent comprising:
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at least one stent member, the at least one stent member forming a substantially tubular body, the substantially tubular body defining a flow path therethrough, the substantially tubular body comprising a plurality of regions which are longitudinally adjacent one another, in each of the regions the at least one stent member defining a plurality of openings, wherein when the stent is inserted into a body lumen at least one of the regions is positioned immediately adjacent to at least one aneurysm, each of the plurality of openings in the at least one region are sized such that blood flow to the at least one aneurysm will stagnate but will be able to flow through the openings to at least one perforator vessel in fluid communication with the body lumen and flow path. - View Dependent Claims (31, 32, 33, 34)
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35. A method for treating at least one aneurysm within a body lumen comprising the steps of:
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providing a stent having at least one stent member, the at least one stent member forming a substantially tubular body, the substantially tubular body defining a flow path theretbrough, the substantially tubular body comprising a plurality of regions which are longitudinally adjacent one another, in each of the regions the at least one stent member defining a plurality of openings;
positioning the stent with in the body lumen such that at least one of the regions underlies the at least one an aneurysm, blood within the body lumen flowing through the flow path, each of the plurality of openings in the at least one region are sized such that blood flow to the at least one aneurysm will stagnate but will be able to flow through the openings to at least one perforator in fluid communication with the body lumen and flow path;
providing a flow of blood through the openings of the at least one region which is sufficiently restricted to result in stagnation of the at least one aneurysm as a result of the size of the area of the at least one region, the size of the area of the openings of the at least one region being sufficient to provide a desired flow of blood to at least one perforator vessel adjacent to the at least one region and in fluid communication with the body lumen.
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Specification