Patent ID: 7871435
Filing Date: 2011-01-18
Classification: A61F

Abstract:
1. A prosthetic heart valve comprising: a base structure having an elliptical central flow orifice oriented around a flow axis, wherein the base structure includes a stent having three arcuate cusps on an inflow end and three upstanding commissures on an outflow end; a sewing ring having an outflow edge mounted around the stent such that the commissures extend in the outflow direction from the sewing ring; and three separate flexible leaflets each having a peripheral cusp edge mounted around a cusp of the stent so as to define a free edge extending into the flow orifice, wherein at least one of the three flexible leaflets is substantially larger than the other two, and the prosthetic heart valve is oriented for placement within the mitral annulus such that the larger leaflet is on an anterior side and the two smaller leaflets are on a posterior side, and further wherein the cusp edge of each flexible leaflet terminates in a pair of commissure edges, with the free edge extending between the commissure edges and opposite the cusp edge, and wherein each leaflet attaches along its cusp and commissure edges to a cusp and two associated commissures of the stent, and wherein the two commissures of the stent to which the larger leaflet attaches have greater dimensions along the flow axis than the third commissure.