Implantable prosthetic valve for implantation within a native atrioventricular valve

An implantable prosthetic valve for implantation within a native atrioventricular heart valve between an atrium and a ventricle of a heart, the prosthetic valve comprising:

• a radially collapsible and radially expandable annular frame comprising:
• an annular main body having an atrial end and a ventricular end, the main body defining a lumen extending therethrough from the atrial end to the ventricular end, wherein the main body is sized to be implanted within an annulus of the native atrioventricular valve;
• an atrial portion coupled to the main body and extending radially away from the main body, wherein the atrial portion is sized to extend over tissue of the native atrioventricular valve within the atrium, wherein the atrial portion comprises:
• a plurality of circumferentially spaced arms disposed around the main body, wherein each arm has one end connected to the atrial end of the main body and extends away from the main body, wherein each arm comprises a serpentine segment;
• and
• a valve member supported within the lumen of the main body;
• wherein blood can flow through the valve member from the atrial end to the ventricular end of the main body when the prosthetic valve is implanted in the native atrioventricular heart valve.

An implantable prosthetic valve for implantation within a native atrioventricular heart valve between an atrium and a ventricle of a heart, the prosthetic valve comprising:

• a radially collapsible and radially expandable annular frame comprising:
• an annular main body having an atrial end and a ventricular end, the main body defining a lumen extending therethrough from the atrial end to the ventricular end, wherein the main body is sized to be implanted within an annulus of the native atrioventricular valve;
• and
• an atrial portion coupled to the main body and extending radially away from the main body, wherein the atrial sealing member is sized to extend over tissue of the native mitral annulus within a left atrium, wherein the atrial portion comprises:
• a plurality of first struts arranged to form a continuous, circumferentially extending, zig-zag shaped outer row of struts defining an outer circumferential edge of the atrial portion at an inlet end of the atrial portion;
• a plurality of second struts arranged to form a continuous, circumferentially extending, zig-zag shaped inner row of struts, wherein the second struts are connected to each other at a plurality of apices, wherein the apices include a set of first apices and a set of second apices;
• wherein the atrial portion comprises exactly two zig-zag shaped rows of struts, including the outer row of struts and the inner row of struts;
• a plurality of radially extending arms, each connected at a respective first end to the main body and at a respective second end to one of the first apices, wherein each second apex is positioned circumferentially between two adjacent first apices and is a free apex that is not connected to an arm or a first strut;
• and
• a valve member disposed within the lumen of the main body;
• wherein blood can flow through the valve member from the atrial end to the ventricular end of the main body when the prosthetic valve is implanted in the native atrioventricular valve.