Replacement heart valve
First Claim
Patent Images
1. A prosthesis configured to be deployed within a native mitral valve, the prosthesis comprising:
- an expandable frame configured to radially expand and collapse for deployment within the native mitral valve, the expandable frame comprising a proximal portion having an inflow end, a distal portion having an outflow end and a longitudinal axis extending from the inflow end to the outflow end, the inflow end configured to be positioned upstream of the outflow end when the prosthesis is deployed within the native mitral valve, a cross-sectional dimension perpendicular to the longitudinal axis of the outflow end being greater than a cross-sectional dimension perpendicular to the longitudinal axis of the inflow end when the expandable frame is in an expanded configuration;
a valve body positioned within a lumen of the expandable frame; and
one or more distal anchors extending from the outflow end of the expandable frame, wherein the distal anchors are sized such that, when the prosthesis is expanded and deployed within the native mitral valve;
at least one of the distal anchors is positioned radially outwardly from the expandable frame;
at least one of the distal anchors extends between chordae tendineae of the native mitral valve;
at least one of the distal anchors contact tissue on a ventricular side of the native mitral valve; and
tips of the one or more distal anchors extend substantially parallel to the longitudinal axis of the expandable frame.
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Abstract
A replacement heart valve can have an expandable frame configured to engage a native valve annulus. A valve body can be mounted onto the expandable frame to provide functionality similar to a natural valve. The valve body has an upstream end and a downstream end, and a diameter at the downstream end is greater than a diameter at the upstream end.
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Citations
19 Claims
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1. A prosthesis configured to be deployed within a native mitral valve, the prosthesis comprising:
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an expandable frame configured to radially expand and collapse for deployment within the native mitral valve, the expandable frame comprising a proximal portion having an inflow end, a distal portion having an outflow end and a longitudinal axis extending from the inflow end to the outflow end, the inflow end configured to be positioned upstream of the outflow end when the prosthesis is deployed within the native mitral valve, a cross-sectional dimension perpendicular to the longitudinal axis of the outflow end being greater than a cross-sectional dimension perpendicular to the longitudinal axis of the inflow end when the expandable frame is in an expanded configuration; a valve body positioned within a lumen of the expandable frame; and one or more distal anchors extending from the outflow end of the expandable frame, wherein the distal anchors are sized such that, when the prosthesis is expanded and deployed within the native mitral valve; at least one of the distal anchors is positioned radially outwardly from the expandable frame; at least one of the distal anchors extends between chordae tendineae of the native mitral valve; at least one of the distal anchors contact tissue on a ventricular side of the native mitral valve; and tips of the one or more distal anchors extend substantially parallel to the longitudinal axis of the expandable frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A prosthesis configured to be deployed within a native mitral valve, the prosthesis comprising:
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an expandable frame configured to radially expand and collapse for deployment within the native mitral valve, the expandable frame comprising a proximal portion having an inflow end, a distal portion having an outflow end, a transition portion between the distal portion and the proximal portion, and a longitudinal axis extending from the inflow end to the outflow end, the inflow end configured to be positioned upstream of the outflow end when the prosthesis is deployed within the native mitral valve, a cross-sectional dimension perpendicular to the longitudinal axis of the outflow end being greater than a cross-sectional dimension perpendicular to the longitudinal axis of the inflow end when the expandable frame is in an expanded configuration, wherein the proximal portion and the distal portion have a constant cross-sectional diameter perpendicular to the longitudinal axis, and wherein the transition portion decreases in cross-sectional diameter perpendicular to the longitudinal axis moving from the distal portion to the proximal portion; a valve body positioned within a lumen of the expandable frame, the valve body comprising a proximal end, a distal end, wherein a diameter at the distal end is greater than a diameter at the proximal end, and a plurality of valve leaflets; one or more proximal anchors each connected to the expandable frame such that when the expandable frame is in the expanded configuration an end of each of the one or more proximal anchors is positioned radially outward from the frame, wherein the one or more proximal anchors are configured to contact tissue on an atrial side of the native mitral valve; one or more distal anchors extending from the outflow end of the expandable frame, wherein the distal anchors are sized such that, when the prosthesis is expanded and deployed within the native mitral valve; at least one of the distal anchors is positioned radially outwardly from the expandable frame; at least one of the distal anchors extends between chordae tendineae of the native mitral valve; at least one of the distal anchors contact tissue on a ventricular side of the native mitral valve; and tips of the one or more distal anchors extend parallel to the longitudinal axis of the expandable frame.
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Specification