Heart valve comprising a crown piece interconnected to leaflets, a top cuff and a bottom cuff; and a medical implant

A foldable and/or unfoldable medical implant comprising a heart valve (100) and a foldable and/or unfoldable frame (1) being interconnected to the heart valve (100), by sewing or sewing alone, the frame (1) comprising:

• a first ring structure (2a),
• a second ring structure (2b),
• at least one first tension thread (5) guided by the first ring structure (2a) for folding and/or unfolding the frame (1) around or along the frame (1) at an outside or an outer circumference thereof;
• at least one second tension thread (5) guided by the second ring structure (2b) for folding and/or unfolding the frame (1) around or along the frame (1) at an outside or an outer circumference thereof;
• posts (3), the posts (3) being arranged between the first and the second ring structures (2a, 2b) in order to interconnect the first and the second ring structures (2a, 2b) with each other and/or to maintain a distance between the first and the second ring structures (2a, 2b);
• and the heart valve (100), comprising:
• a ring-shaped crown piece (111), the ring-shaped crown piece (111) having opposing first and second axial ends, the first axial end of the ring-shaped crown piece having a plurality of connecting rims that are arranged one after another along a circumferential direction of the ring-shaped crown piece (111);
• leaflets (101, 101′, 101″) connected to the first axial end of the ring-shaped crown piece (111) at the plurality of connecting rims respectively, each of the leaflets (101, 101′, 101″) having a fixed first end connected to a respective one of the plurality of connecting rims of the ring-shaped crown piece (111) and a free second end opposite to the fixed first end;
• a ring-shaped top cuff (121);
• and
• a ring-shaped bottom cuff (131), wherein the ring-shaped crown piece (111), the ring-shaped top cuff (121) and the ring-shaped bottom cuff (131) are separate pieces, with each of the ring-shaped top cuff (121) and the ring-shaped bottom cuff (131) being interconnected with the second axial end of the ring-shaped crown piece (111), and the ring-shaped top cuff (121) and the ring-shaped bottom cuff (131) covering a same radial side of the frame (1),
• wherein the ring-shaped crown piece (111) has a plurality of connecting portions that are arranged corresponding to and sewed to the posts (3).