An expandable, preferably a self-expandable, stent-valve (1), preferably a mitral, a tricuspid, a pulmonary or an aortic stent valve, comprising a stent component (2) and a valve component (3). The stent component (2) comprises an inflow end (4) and an outflow end (5) and a wall between the inflow (4) and the outflow end (5). The valve component (3) comprises at least one leaflet (6), preferably only one leaflet (6). The at least one leaflet (6) is attached or attachable to the stent component (2) with the periphery of the at least one leaflet (6) along a fixation line (7', 7''). The fixation line (7', 7'') of the at least one leaflet (6) is at least partially inclined with respect to a plane perpendicular to a flow direction (A) through the stent-valve (1).
