Valve replacement devices, delivery device for a valve replacement device and method of production of a valve replacement device

A valve replacement device for transcatheter implantation, comprising:

• a stent component having an inflow section with an inflow extremity, an intermediate section, and an outflow section with an outflow extremity,
• a maximal diameter of the inflow section being smaller than a maximal diameter of the outflow section;
• the intermediate section having a diameter which is smaller than the maximal diameter of either of an inflow or an outflow section;
• the stent component being radially compressible to a compressed state for delivery to a site of implantation and radially expandable to a functional state;
• the stent component further comprising at least one attachment element for mating engagement with a delivery device;
• valve leaflets mounted at least partly within the stent component;
• an inner skirt and an outer skirt of porcine pericardial tissue;
• an inner skirt attached to the valve leaflets and having commissural portions spaced apart by scalloped clearances, each clearance spanned by a respective leaflet, the inner skirt extending at least partly within the stent component towards the inflow extremity;
• and
• an outer skirt extending at least partly outside the stent component, the outer skirt extending further than the inner skirt towards the inflow extremity.