Method and apparatus for percutaneous valve repair
First Claim
1. A valve replacement assembly comprising:
- a valve cutter; and
a debris tent positioned over the valve cutter to capture debris created by the valve cutter during tissue removal.
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Accused Products
Abstract
Methods and apparatus are provided for valve repair or replacement. In one embodiment, the apparatus is a valve delivery device comprising a first apparatus and a second apparatus. The first apparatus includes a heart valve support having a proximal portion and a distal portion and a heart valve excisor slidably mounted on said first apparatus. The second apparatus includes a fastener assembly having a plurality of penetrating members mounted to extend outward when the assembly assumes an expanded configuration; and a heart valve prosthesis being releasably coupled to said second apparatus. The first apparatus and second apparatus are sized and configured for delivery to the heart through an opening formed in a femoral blood vessel. The heart valve prosthesis support is movable along a longitudinal axis of the device to engage tissue disposed between the anvil and the valve prosthesis. The system may include a tent and/or an embolic screen to capture debris from valve removal.
198 Citations
38 Claims
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1. A valve replacement assembly comprising:
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a valve cutter; and
a debris tent positioned over the valve cutter to capture debris created by the valve cutter during tissue removal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of valve replacement, the method comprising:
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providing a first apparatus having a valve anvil for supporting valve tissue and a valve leaflet cutter;
providing a second apparatus having a valve prosthesis, a prosthesis protective cone, and valve fastener assembly;
accessing a femoral blood vessel and inserting a guidewire to guide the first and second apparatus to a target site in the heart;
advancing the first apparatus along the guidewire in a collapsed configuration where the valve leaflet support is advanced through a valve, wherein the support is positioned below a valve annulus;
expanding said first apparatus at the target site into an expanded configuration so that said valve leaflet support will engage said valve;
advancing the second apparatus along the guidewire in a collapsed configuration to the target site until the second apparatus engages an alignment marker indicating that the desired position has been reached;
advancing a plunger to expand said valve prosthesis and fastener assembly to engage tissue at the target site, wherein expanding the fastener assembly advances penetrating members on said fastener into valve tissue, said penetrating members being secured in said valve tissue and the valve prosthesis, and act as anchors to hold said valve prosthesis in position;
moving said valve leaflet support and valve excisor together to remove leaflets of the valve; and
capturing cut valve leaflets in the prosthesis protective cone. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A valve delivery device comprising:
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a first apparatus comprising a heart valve support having a proximal portion and a distal portion;
a heart valve excisor slidably mounted on said first apparatus;
a second apparatus comprising a fastener assembly having a plurality of penetrating members mounted to extend outward when the assembly assumes an expanded configuration;
a heart valve prosthesis being releasably coupled to said second apparatus;
said first apparatus and second apparatus being sized and configured for delivery to the heart through an opening formed in a femoral blood vessel; and
said heart valve prosthesis support movable along a longitudinal axis of the device to engage tissue disposed between the anvil and the valve prosthesis. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 38)
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29. A fastener assembly comprising:
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a ring having a plurality of foldable portions and a plurality of non-folding portions; and
a plurality of penetrating members ejectably mounted on the ring to extend radially outward. - View Dependent Claims (30, 31, 32, 33, 34)
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35. A method comprising:
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accessing a femoral blood vessel and inserting a guidewire to guide valve delivery assembly to a target site in the heart;
advancing an anvil portion of the valve delivery assembly along the guidewire in a collapsed configuration where the anvil is advanced through a valve, wherein the anvil is positioned below a valve annulus;
expanding anvil at the target site into an expanded configuration so that the anvil will engage said valve;
advancing a valve fastener portion of the valve delivery assembly along the guidewire in a collapsed configuration to the target site until the valve fastener portion engages an alignment marker indicating that the desired position has been reached, wherein the valve fastener portion includes a valve excisor;
expanding said valve prosthesis and valve fastener portion to engage tissue at the target site, wherein expanding the fastener assembly advances penetrating members on said fastener into valve tissue, said penetrating members being secured in said valve tissue and the valve prosthesis, and act as anchors to hold said valve prosthesis in position;
moving the valve leaflet support and a valve excisor together to remove leaflets of the valve; and
capturing cut valve leaflets in a prosthesis protective cone. - View Dependent Claims (36, 37)
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Specification