A heart valve system, the system comprising: a radially self-expandable tubular body having an inflow end, an outflow end and mesh-like structure, the outflow end including a proximal section and a plurality of arched beams that form a distal-most end of the tubular body, the plurality of beams being disposed distally of the proximal section in an outflow direction and adjacent beams are directly attached such that the beams are continuous along the entire circumference of tubular body at the outflow end, wherein the beams are directly linked with the inflow end of the tubular body by connection points, and the tubular body including struts with peaks and valleys at the inflow end of the tubular body such that the proximal section of the outflow end is disposed distally of the peaks and valleys in the outflow direction, the tubular body further including an outer preformed groove that is axially spaced apart from proximal-most and distal-most ends (13, 14) of the tubular body and is an indentation in the mesh-like structure of the tubular body defining a channel which is open to the radial outside of the tubular body, wherein the beams and the proximal section are disposed distal of preformed groove in the outflow direction, and a valve coupled to the tubular body, the valve including a plurality of valve leaflets, wherein due to the structure of the tubular body the movement of the proximal section of the outflow end radially inward causes the inflow end to flare radially outward. a radially self-expandable tubular body having an inflow end, an outflow end and mesh-like structure, the outflow end including a proximal section and a plurality of arched beams that form a distal-most end of the tubular body, the plurality of beams being disposed distally of the proximal section in an outflow direction and adjacent beams are directly attached such that the beams are continuous along the entire circumference of tubular body at the outflow end, wherein the beams are directly linked with the inflow end of the tubular body by connection points, and the tubular body including struts with peaks and valleys at the inflow end of the tubular body such that the proximal section of the outflow end is disposed distally of the peaks and valleys in the outflow direction, the tubular body further including an outer preformed groove that is axially spaced apart from proximal-most and distal-most ends (13, 14) of the tubular body and is an indentation in the mesh-like structure of the tubular body defining a channel which is open to the radial outside of the tubular body, wherein the beams and the proximal section are disposed distal of preformed groove in the outflow direction, and the outflow end including a proximal section and a plurality of arched beams that form a distal-most end of the tubular body, the plurality of beams being disposed distally of the proximal section in an outflow direction and adjacent beams are directly attached such that the beams are continuous along the entire circumference of tubular body at the outflow end, wherein the beams are directly linked with the inflow end of the tubular body by connection points, and the tubular body including struts with peaks and valleys at the inflow end of the tubular body such that the proximal section of the outflow end is disposed distally of the peaks and valleys in the outflow direction, the tubular body further including an outer preformed groove that is axially spaced apart from proximal-most and distal-most ends (13, 14) of the tubular body and is an indentation in the mesh-like structure of the tubular body defining a channel which is open to the radial outside of the tubular body, wherein the beams and the proximal section are disposed distal of preformed groove in the outflow direction, and a valve coupled to the tubular body, the valve including a plurality of valve leaflets, wherein due to the structure of the tubular body the movement of the proximal section of the outflow end radially inward causes the inflow end to flare radially outward.