Vascular stent for embolic protection
First Claim
1. A method for treating a stenosis in a blood vessel, the method comprising:
- providing a stent having an expanded state and a contracted state, the stent comprising a frame and a tubular member, a lumen extending between first and second ends of the tubular member, the tubular member being permeable to blood and being configured to constrain emboli between the tubular member and the blood vessel, the tubular member being sized to run along the entire length of the stenosis;
delivering the stent to the vessel proximate the stenosis;
expanding the first end of the stent to engage an inner wall of the blood vessel distal the stenosis;
expanding a mid-portion of the stent to engage the stenosis; and
expanding a second end of the stent to engage the inner wall of the blood vessel proximal the stenosis.
1 Assignment
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Accused Products
Abstract
A method and device to repair a stenosis in a blood vessel is provided. The medical device has a tubular member and a frame. The frame may be expanded or contracted while maintaining its generally cylindrical configuration. The medical device is retained in a contracted state inside an introducer sheath. The introducer sheath is guided through the stenosis such that a first end of the medical device is located distal the stenosis. The introducer sheath is retracted relative to the medical device, such that the first end of the stent expands to engage the blood vessel distal the stenosis. A mid-portion of the medical device engages the plaque of the stenosis trapping any emboli against the wall of the vessel. The second end expands to engage the blood vessel proximal to stenosis.
132 Citations
23 Claims
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1. A method for treating a stenosis in a blood vessel, the method comprising:
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providing a stent having an expanded state and a contracted state, the stent comprising a frame and a tubular member, a lumen extending between first and second ends of the tubular member, the tubular member being permeable to blood and being configured to constrain emboli between the tubular member and the blood vessel, the tubular member being sized to run along the entire length of the stenosis;
delivering the stent to the vessel proximate the stenosis;
expanding the first end of the stent to engage an inner wall of the blood vessel distal the stenosis;
expanding a mid-portion of the stent to engage the stenosis; and
expanding a second end of the stent to engage the inner wall of the blood vessel proximal the stenosis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for treating a stenosis in a blood vessel, the method comprising:
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providing a stent having a tubular member and a frame, the tubular member is attached to the frame and has a lumen located between a first and second end of the stent, the frame being self expandable to define an expanded state and a contracted state of the stent, further wherein the tubular member comprises an extracellular matrix;
the tubular member being permeable to blood and being configured to constrain emboli between the tubular member and the blood vessel, the tubular member being sized to run along the entire length of the stenosis;
delivering the stent to the vessel proximate the stenosis;
expanding the first end of the stent such that the extracellular matrix engages an inner wall of the blood vessel distal the stenosis;
expanding a mid-portion of the stent to engage the stenosis;
expanding a second end of the stent such that the extracellular matrix engages the inner wall of the blood vessel proximal the stenosis. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A medical device for treating a stenosis in a blood vessel, the medical device comprising:
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a frame being expandable to define an expanded and contracted state, the frame being biased to the expanded state;
a tubular member attached along a length of the frame and forming a lumen between first and second ends of the frame, the tubular member being configured with the frame in the expanded state to engage the blood vessel at the first and second end, the tubular member comprising an extracellular matrix, the extracellular matrix being permeable to blood and being configured to constrain emboli between the tubular member and the blood vessel, the tubular member being sized to run along the entire length of the stenosis. - View Dependent Claims (20, 21, 22, 23)
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Specification