Methods and apparatus for endovascular heart valve replacement comprising tissue grasping elements
First Claim
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1. A method for endovascularly replacing a patient'"'"'s native heart valve, the method comprising:
- delivering a radially expandable anchor and a replacement valve supported within the anchor to a vicinity of the native heart valve, wherein the anchor defines a plurality of cells having a tubular shape extending from a downstream end of the plurality of cells to an upstream end of the plurality of cells, the anchor including leaflet engagement elements attached at the downstream end of the plurality of cells and extending distally therefrom;
sandwiching native valve leaflets between the distally extending leaflet engagement elements and the plurality of cells; and
radially expanding the anchor to a fully deployed configuration to secure the anchor within the native heart valve;
wherein the replacement valve allows the flow of blood downstream through the replacement valve in a first configuration and prevents the flow of blood through the replacement valve in a second configuration.
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Abstract
A method for endovascularly replacing a patient'"'"'s heart valve including the following steps: endovascularly delivering an anchor and a replacement valve supported within the anchor to a vicinity of the heart valve in a collapsed delivery configuration, the anchor having grasping elements adapted to grasp tissue in a vicinity of the heart valve; expanding the anchor, thereby rotating the grasping elements; and grasping the tissue with the rotating grasping elements.
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Citations
18 Claims
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1. A method for endovascularly replacing a patient'"'"'s native heart valve, the method comprising:
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delivering a radially expandable anchor and a replacement valve supported within the anchor to a vicinity of the native heart valve, wherein the anchor defines a plurality of cells having a tubular shape extending from a downstream end of the plurality of cells to an upstream end of the plurality of cells, the anchor including leaflet engagement elements attached at the downstream end of the plurality of cells and extending distally therefrom; sandwiching native valve leaflets between the distally extending leaflet engagement elements and the plurality of cells; and radially expanding the anchor to a fully deployed configuration to secure the anchor within the native heart valve; wherein the replacement valve allows the flow of blood downstream through the replacement valve in a first configuration and prevents the flow of blood through the replacement valve in a second configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for endovascularly replacing a patient'"'"'s native heart valve, the method comprising:
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delivering a radially expandable anchor and a replacement heart valve supported within the anchor to a vicinity of the native heart valve; wherein the anchor defines a tubular structure extending from a downstream end to an upstream end, the anchor including leaflet engagement elements attached at the downstream end of the tubular structure and extending distally therefrom; deploying the leaflet engagement elements adjacent native valve leaflets, downstream of the native valve leaflets; advancing the anchor and leaflet engagement elements upstream to sandwich the native valve leaflets between the leaflet engagement elements and an outer surface of the tubular structure downstream of an annulus of the native heart valve; and radially expanding the anchor to a fully deployed configuration to secure the anchor within the native heart valve; wherein the replacement heart valve allows the flow of blood downstream through the replacement heart valve in a first configuration and prevents the flow of blood through the replacement heart valve in a second configuration. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification