Endoprosthesis for implantation in the heart of a patient

An endoprosthesis comprising:

• a plurality of first arches, each first arch having an apex pointing in a proximal direction;
• a plurality of second arches, each second arch having an apex pointing in a proximal direction and being axially aligned, in a longitudinal direction of the endoprosthesis, with an apex of a corresponding first arch;
• a reinforcement structure comprising a plurality of lattice cells disposed between each second arch and an adjacent second arch;
• a supporting structure located at a proximal-most end of the stent, the supporting structure comprising at least one row of lattice cells, wherein at least a portion of the supporting structure is flared radially outward, such that the proximal-most end of the endoprosthesis has a diameter larger than a diameter of a portion of the endoprosthesis distal to the supporting structure;
• and
• a heart valve prosthesis attached to the supporting structure.

An endoprosthesis comprising:

• a plurality of first arches, each first arch having an apex pointing in a proximal direction;
• a plurality of second arches, each second arch having an apex axially aligned, in a longitudinal direction of the endoprosthesis, with an apex of a corresponding first arch, wherein each second arch includes two arms, and at least one side of each arm includes a plurality of notches;
• a plurality of third arches, each third arch having an apex pointing in the distal direction and being axially aligned, in the longitudinal direction of the endoprosthesis, with an apex of a corresponding first arch of the plurality of first arches;
• a supporting structure located at a proximal-most end of the stent, the supporting structure including exactly one row of lattice cells proximal to the apex of each second arch of the plurality of second arches;
• and
• a heart valve prosthesis attached to each second arch of the plurality of second arches.