Transcatheter Valve Prosthesis and a Concurrently Delivered Sealing Component

A method of preventing paravalvular leakage, the method comprising the steps of:

• percutaneously advancing a catheter to a target site, wherein the catheter includes a heart valve prosthesis and an annular sealing component encircling an outer surface of the heart valve prosthesis, the sealing component including a cylindrical sleeve formed of a flexible material and a plurality of ribs longitudinally extending over the cylindrical sleeve, wherein the sealing component is in a delivery configuration in which the cylindrical sleeve lays flat against the outer surface of the heart valve prosthesis;
• deploying at least a portion of the heart valve prosthesis against native valve tissue at the target site;
• radially expanding the sealing component to a deployed configuration in which the at least a portion of the ribs are sinusoidal and cause at least a portion of the cylindrical sleeve to buckle outwardly away from the outer surface of the heart valve prosthesis, wherein the sealing component prevents gaps between the valve prosthesis and the native valve tissue to prevent paravalvular leakage.