Patent ID: 9289296
Filing Date: 2016-03-22
CPC Classification: A61F

Claim Text:
1. A prosthetic heart valve, comprising: (a) a stent that is radially collapsible to a collapsed condition for mounting on a delivery device and is radially expansible from the collapsed condition to an expanded condition when the stent is implanted, the stent extending in a longitudinal direction between an inflow end and an outflow end; (b) a valve element mounted within the stent, the valve element being collapsible and expandable along with the stent, the valve element being arranged to allow flow of blood within the stent towards the outflow end when the stent is in the expanded condition; and (c) a cuff including a first wall and a second wall radially outward of the first wall and radially outward of the stent, the first and second walls cooperatively defining at least one pocket and at least one opening for entry of blood into the at least one pocket when the stent is in the expanded condition, the at least one opening being disposed adjacent the inflow end of the stent, the at least one opening facing toward the outflow end of the stent so that when the stent is implanted, retrograde blood flow around the outside of the stent can bias the second wall outwardly into engagement with native tissue.