Transcatheter Valve Prosthesis and a Concurrently Delivered Sealing Component

摘要

A method of preventing paravalvular leakage includes concurrent delivery of a heart valve prosthesis and an annular sealing component. During delivery, the sealing component is moved from a first position to a second position of the heart valve prosthesis which is longitudinally spaced apart from the first position of the heart valve prosthesis. The sealing component is secured around the heart valve prosthesis at the second position by a contoured outer surface of the heart valve prosthesis. The sealing component may be a flexible ring or may be a cylindrical flexible sleeve having a plurality of ribs longitudinally extending over the cylindrical sleeve. The ribs operate to deploy the sealing component such that at least a portion of the cylindrical sleeve buckles outwardly away from the outer surface of the heart valve prosthesis.

主权项

1. 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, wherein the sealing component is not coupled to the valve prosthesis and is positioned around an outer surface of the heart valve prosthesis at a first position on the heart valve prosthesis; deploying at least a portion of the heart valve prosthesis against native valve tissue at the target site; moving the sealing component to a second position on the heart valve prosthesis which is longitudinally spaced apart from the first position of the heart valve prosthesis, wherein the sealing component is secured around the heart valve prosthesis at the second position by a contoured outer surface of the heart valve prosthesis and the sealing component prevents gaps between the valve prosthesis and the native valve tissue to prevent paravalvular leakage.