Aneurysm treatment device and method of use
The present application discloses an apparatus for treating vascular aneurysms and includes a radially expandable substantially cylindrical structure formed from a plurality of support members and defining a plurality of openings, and at least one reactive material strand selectively integrated into the substantially cylindrical structure. The reactive material is configured to assume a non-reacted state and a reacted state. The reactive material in the reacted state is configured to restrict a flow of blood to an aneurysm.
1. An intra-aneurysmal bridge device, comprising:
a first engagement member having an elongated shape;
a second engagement member having an elongated shape and being located adjacent to said first engagement member so as to cooperatively form a joint;
a body member connected to said first engagement member and said second engagement member;
a reactive material selectively applied to said first engagement member and said second engagement member, wherein expansion of said reactive material is activated a physiological pH for a period of time.
2. The intra-aneurysmal bridge device of claim 1 , wherein said reactive material has a non-reacted state and a reacted state, wherein said reacted state further restricts blood flow to an aneurysm.
3. The intra-aneurysmal bridge device of claim 2 , wherein said reactive material volumetrically expands in said reacted state.
4. The intra-aneurysmal bridge device of claim 3 , wherein said reactive material is a hydrogel.
5. The intra-aneurysmal bridge device of claim 1 , wherein said first engagement member, said second engagement member and said body member are a single, unitary member.
6. The intra-aneurysmal bridge device of claim 1 , wherein said first engagement member and said second engagement member are curved.
7. The intra-aneurysmal bridge device of claim 6 , wherein said first engagement member and said second engagement member are curved toward said body member.
8. The intra-aneurysmal bridge device of claim 1 wherein said intra-aneurysmal bridge is controllably detachable from an elongated delivery apparatus.
9. An intra-aneurysmal bridge device, comprising:
an elongated member having a plurality of curves that form a body region, a first elongated engagement region, a second elongated engagement region, and a reactive material selectively applied to said first elongated engagement region and said second elongated engagement region, wherein expansion of said reactive material is activated by a physiological pH for a period of time;
wherein said first elongated engagement region and said second elongated engagement region are positioned adjacent to each other so as to form a joint.
10. The intra-aneurysmal bridge device of claim 9 , wherein said first elongated engagement region and said second elongated engagement region extend in opposite directions from each other.
11. The intra-aneurysmal bridge device of claim 9 , wherein said reactive material has a non-reacted state and a reacted state, wherein said reacted state further restricts blood flow to an aneurysm.
12. The intra-aneurysmal bridge device of claim 11 , wherein said reactive material volumetrically expands in said reacted state.
13. The intra-aneurysmal bridge device of claim 12 , wherein said reactive material is a hydrogel.
14. The intra-aneurysmal bridge device of claim 9 , wherein said first elongated engagement region and said second elongated engagement region are curved.
15. The intra-aneurysmal bridge device of claim 14 , wherein said first elongated engagement region and said second elongated engagement region are curved toward said body region.
16. A method of aneurysm treatment comprising:
advancing a bridge device within an aneurysm;
engaging an inner surface of said aneurysm with a first elongated portion of said bridge device and a second elongated portion of said bridge device;
maintaining said first elongated portion of said bridge device adjacent said second elongated portion of said bridge device;
causing volumetric expansion of a reactive material disposed on said first elongated portion of said bridge device and said second elongated portion of said bridge device by exposure to a physiological pH for a period of time;
allowing volumetric expansion of said reactive material after said exposure to said physiological pH for said period of time;
reducing blood flow into said aneurysm with said first elongated portion of said bridge device and said second elongated portion of said bridge device.
17. The method of claim 16 , wherein said first elongated portion of said bridge device and said second elongated portion of said bridge device have a radius of curvature of said inner surface of said aneurysm.