Stationary intra-annular halo designs for paravalvular leak (PVL) reduction - active channel filling cuff designs

摘要

A prosthetic heart valve (600) may include a collapsible and expandable stent (606) extending in a flow direction between a proximal end (602) and a distal end (604), a cuff (612) attached to an annulus section of the stent and having an outer surface facing in a radial direction orthogonal to the flow direction, a plurality of prosthetic valve leaflets attached to the cuff, and a sealing structure (650A) attached to the annulus section of the stent at an inner edge of the sealing structure. The flow direction may be defined from the proximal end toward the distal end. The sealing structure may have an outer edge remote from the inner edge. The sealing structure may have a collapsed condition with the outer edge disposed adjacent the outer surface of the cuff and an expanded condition with the outer edge spaced apart from the outer surface of the cuff.