Patent ID: 8845720
Filing Date: 2014-09-30
Classification: A61F

Abstract:
1. A prosthetic heart valve that is radially expandable from a compressed configuration to an expanded configuration, comprising: a balloon-expandable stent portion configured to anchor the prosthetic valve against a heart valve annulus, the stent portion defining a lumen therethrough, wherein the stent portion is radially expandable from a collapsed state to an expanded state, wherein the stent portion has a circumferential strut at an outflow end thereof having an expanded diameter in the expanded state of the stent portion, the stent portion further including an inflow end opposite the outflow end that flares outward from the outflow end in the expanded state of the stent portion; a plurality of valve leaflets; a self-expandable wireform portion that is separate from the stent portion, the wireform portion comprising a plurality of commissure supports extending in an outflow direction and the same number of cusps defining an inflow end of the wireform portion, each cusp adapted to support one of the valve leaflets, wherein the wireform portion is radially expandable from a constrained configuration to an expanded configuration where the cusps define an inflow diameter of the wireform portion, the wireform portion having a cloth covering; a cloth-covered flexible leaflet support stent arranged around the wireform portion and being radially collapsible and expandable along with the wireform portion, the cloth-covered leaflet support stent being attached with sutures to the cloth covering of the wireform portion; connecting sutures coupling the circumferential strut at the outflow end of the stent portion adjacent to an inflow end of the leaflet support stent such that the expanded diameter of the stent portion is equal to the cusp diameter; a sealing ring circumscribing and extending outward from the cloth-covered leaflet support stent and from the outflow end of the stent portion, and wherein the stiffness of the circumferential strut of the stent portion in its collapsed state is sufficient to prevent the inflow end of the wireform portion from expanding toward its expanded configuration by virtue of the outflow end of the stent portion being sutured thereto.