Patent attributes
A prosthetic heart valve includes a collapsible stent and a valve assembly disposed within the stent. A first cuff is disposed adjacent the stent. A filler is annularly disposed about the stent radially outward of the first cuff and radially outward of the stent. The filler has a first circumferential layer with a first inner wall, a first outer wall, and a plurality of first ribs connecting the first inner wall to the first outer wall. The filler has an expanded condition in which the first inner wall is spaced a first distance from the first outer wall in a radial direction transverse to the longitudinal direction of the stent, and a collapsed condition in which the first inner wall is spaced a second distance from the first outer wall in the radial direction, the first distance being greater than the second distance.
