HEART VALVE
First Claim
Patent Images
1. A prosthesis configured to be deployed within a native valve, the prosthesis comprising:
- an expandable frame comprising a proximal end, a distal end and a longitudinal axis extending between the proximal and distal ends, the frame comprising a foreshortening portion having a plurality of foreshortening cells, the frame configured to radially expand and collapse for deployment within the native valve;
a number of proximal anchors each connected to the frame and having free ends positioned radially outward from the frame when the frame is in an expanded configuration, wherein each of the plurality of proximal anchors comprises first and second struts connected to and extending radially outward from the frame when the frame is in an expanded configuration;
a number of distal anchors equal to the number of proximal anchors, the distal anchors each connected to the frame and having free ends positioned radially outward from the frame and extending toward the proximal end when the frame is in an expanded configuration;
a valve body attached to the frame, wherein the valve body can move between (i) an open position wherein blood can flow from the proximal end toward the distal end; and
(ii) a closed position which blocks blood from flowing from the distal end toward the proximal end;
wherein the frame is configured such that radial expansion of the frame causes the free ends of the proximal and distal anchors to draw closer together; and
wherein the prosthesis is configured such that, after the prosthesis has been delivered to the native valve and expanded, the proximal anchors are positioned on an inflow side of the native valve and the distal anchors are positioned on an outflow side of the native valve.
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Accused Products
Abstract
A heart valve includes a valve body made of a flexible material such as pericardium. The valve body is made of two layers of material, an outer layer, and an inner layer that defines a plurality of leaflets. The leaflets of the inner layer are attached to the outer layer. In some embodiments the valve body is made by cutting a single piece of flat source tissue, folding the cut tissue and forming it into a tubular pattern having the inner and outer layers. The multi-layer valve body can be mounted on a stent for delivery within a patient'"'"'s heart.
35 Citations
25 Claims
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1. A prosthesis configured to be deployed within a native valve, the prosthesis comprising:
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an expandable frame comprising a proximal end, a distal end and a longitudinal axis extending between the proximal and distal ends, the frame comprising a foreshortening portion having a plurality of foreshortening cells, the frame configured to radially expand and collapse for deployment within the native valve; a number of proximal anchors each connected to the frame and having free ends positioned radially outward from the frame when the frame is in an expanded configuration, wherein each of the plurality of proximal anchors comprises first and second struts connected to and extending radially outward from the frame when the frame is in an expanded configuration; a number of distal anchors equal to the number of proximal anchors, the distal anchors each connected to the frame and having free ends positioned radially outward from the frame and extending toward the proximal end when the frame is in an expanded configuration; a valve body attached to the frame, wherein the valve body can move between (i) an open position wherein blood can flow from the proximal end toward the distal end; and
(ii) a closed position which blocks blood from flowing from the distal end toward the proximal end;wherein the frame is configured such that radial expansion of the frame causes the free ends of the proximal and distal anchors to draw closer together; and wherein the prosthesis is configured such that, after the prosthesis has been delivered to the native valve and expanded, the proximal anchors are positioned on an inflow side of the native valve and the distal anchors are positioned on an outflow side of the native valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A prosthesis configured to be deployed within a patient'"'"'s mitral valve having a mitral annulus, the prosthesis comprising:
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an expandable frame comprising a proximal end, a distal end, and a longitudinal axis extending between the proximal and distal ends, the frame configured to radially expand and collapse for deployment within the mitral valve, the frame comprising a foreshortening section having a row of foreshortening cells near the distal end of the frame; a number of distal anchors each having a base connected to a distal portion of a foreshortening cell, the distal anchors each having free ends positioned radially outward from the frame and extending toward the proximal end when the frame is in an expanded configuration so that the free ends of the distal anchors are closer to the proximal end than the bases are to the proximal end; and a number of equally spaced proximal anchors proximal to the distal anchors and positioned around an entire circumference of the frame, each proximal anchor having a free end which is positioned radially outward from the frame when the frame is in an expanded configuration; a valve body attached to the frame, wherein the valve body can move between (i) an open position wherein blood can flow from the proximal end toward the distal end to allow blood to flow from the left atrium to the left ventricle; and
(ii) a closed position which blocks blood from flowing from the distal end toward the proximal end to block blood from flowing from the left ventricle to the left atrium;wherein the free ends of the proximal anchors and the free ends of the distal anchors are circumferentially offset when the frame is in an expanded configuration; wherein the prosthesis is configured such that, after the prosthesis has been delivered to the mitral valve and expanded, the proximal anchors are on an atrial side of the mitral annulus and the distal anchors are on a ventricular side of the mitral annulus; and wherein the frame is configured such that radial expansion of the frame causes the free ends of the proximal anchors and the free ends of the distal anchors to draw closer together. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification