Anti-paravalvular leakage component for a transcatheter valve prosthesis

A transcatheter valve prosthesis comprising:

• a stent having a radially compressed configuration for delivery within a vasculature and an expanded configuration for deployment within a native heart valve, the stent including a support frame of struts and openings defined between the struts;
• a prosthetic valve component disposed within and secured to the stent;
• and
• a continuous outer annular component circumferentially surrounding an outer surface of the stent, the outer annular component including a plurality of self-expanding segments and an annular sealing element, the self-expanding segments coupled to and extending from the stent, the annular sealing element coupled to and covering an outer surface or an inner surface of each of the self-expanding segments, the outer annular component having an expanded configuration in which the self-expanding segments curve and extend radially away from the outer surface of the stent, wherein each self-expanding segment extends in a longitudinal direction of the stent and has a first end and a second end which are longitudinally spaced apart relative to the outer surface of the stent when the outer annular component is in the expanded configuration.