Methods and apparatus for endovascular heart valve replacement comprising tissue grasping elements
First Claim
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1. A replacement heart valve apparatus comprising:
- an expandable anchor comprising a radially expandable metallic framework forming closed cells, the expandable anchor comprising a delivery configuration, an at-rest configuration, and a deployed configuration; and
a replacement heart valve disposed within and coupled to the expandable anchor;
wherein the expandable anchor self-expands from the delivery configuration to the at-rest configuration upon removal from a delivery sheath;
wherein the expandable anchor requires active foreshortening by application of an axially-directed force to the expandable anchor to shift from the at-rest configuration to the deployed configuration;
wherein the expandable anchor comprises a braid.
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Abstract
The present invention provides an apparatus for endovascularly replacing a patient'"'"'s heart valve. In some embodiments, the apparatus includes an expandable anchor supporting a replacement valve, the anchor and replacement valve being adapted for percutaneous delivery and deployment to replace the patient'"'"'s heart valve, the anchor having a braid having atraumatic grasping elements adapted to grasp tissue in a vicinity of the patient'"'"'s heart valve.
950 Citations
15 Claims
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1. A replacement heart valve apparatus comprising:
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an expandable anchor comprising a radially expandable metallic framework forming closed cells, the expandable anchor comprising a delivery configuration, an at-rest configuration, and a deployed configuration; and a replacement heart valve disposed within and coupled to the expandable anchor; wherein the expandable anchor self-expands from the delivery configuration to the at-rest configuration upon removal from a delivery sheath; wherein the expandable anchor requires active foreshortening by application of an axially-directed force to the expandable anchor to shift from the at-rest configuration to the deployed configuration; wherein the expandable anchor comprises a braid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A replacement heart valve apparatus comprising:
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an expandable anchor comprising a radially expandable metallic framework forming closed cells, the expandable anchor comprising a delivery configuration, an at-rest configuration, and a deployed configuration; a replacement heart valve disposed within and coupled to the expandable anchor; wherein the expandable anchor self-expands from the delivery configuration to the at-rest configuration upon removal from a delivery sheath; wherein the expandable anchor requires active foreshortening by application of an axially-directed force to the expandable anchor to shift from the at-rest configuration to the deployed configuration; and a two-part locking mechanism, wherein the replacement heart valve is supported by posts and the anchor comprises buckles, wherein the posts and the buckles are configured to engage each other in the deployed configuration. - View Dependent Claims (10, 11, 12)
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13. A replacement heart valve apparatus comprising:
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an expandable anchor comprising a radially expandable metallic framework forming closed cells, the expandable anchor comprising a delivery configuration, an at-rest configuration, and a deployed configuration; and a replacement heart valve disposed within and coupled to the expandable anchor; wherein the expandable anchor self-expands from the delivery configuration to the at-rest configuration upon removal from a delivery sheath; wherein the expandable anchor requires active foreshortening by application of an axially-directed force to the expandable anchor to shift from the at-rest configuration to the deployed configuration; wherein the expandable anchor comprises a braid, the expandable anchor comprises a distal end and a proximal end, at least one of the distal end and the proximal end comprises closed end turns. - View Dependent Claims (14, 15)
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Specification