Paravalvular leak protection

摘要

A prosthetic heart valve includes a collapsible and expandable stent having a proximal end and a distal end, and a collapsible and expandable valve assembly, the valve assembly including a plurality of leaflets connected to at least one of the stent and a cuff. The heart valve further includes a conformable band disposed about the perimeter of the stent near the proximal end for filling gaps between the collapsible prosthetic heart valve and a native valve annulus.

主权项

1. A prosthetic heart valve, comprising:
a collapsible and expandable stent having a proximal end, and a distal end, the stent in an expanded condition having a minimum diameter and a maximum diameter, the maximum diameter being greater than the minimum diameter; a cuff coupled to the stent and having a first edge and a second edge; a valve assembly including a plurality of leaflets coupled to at least one of the stent or the cuff; and a toroid-shaped conformable band formed of a braided metal fabric having strands, and having an inner surface disposed near the perimeter of the stent adjacent the plurality of leaflets and an outer surface adapted for contacting body tissue, the conformable band being disposed between the first edge and the second edge of the cuff, being spaced away from the proximal end of the stent, and having an outer diameter that is greater than the minimum diameter and less than the maximum diameter, and being configured to fill gaps between the stent and the body tissue, the conformable band and the cuff comprising different materials.