Prosthetic valve with improved washout

Described embodiments are directed toward a method of making a prosthetic valve, comprising: obtaining a support structure such as a leaflet frame or conduit, obtaining a leaflet including a first leaflet component and a second leaflet component; coupling the first leaflet component adjacent to an inlet portion of the support structure; and coupling the second leaflet component adjacent to an outlet portion of the support structure such that a second overlap region of a second inflow free edge of the second leaflet component overlaps a first overlap region of a first outflow free edge of the first leaflet component such that a portion of a second inflow side of the second leaflet component is in contact and in sealing engagement with a portion of a first outflow side of the first leaflet component when the leaflet is in a closed position defining a leaflet overlap region preventing fluid flow through a lumen in a retrograde direction, and wherein the first overlap region and the second overlap region are not in contact therewith wherein the first outflow free edge and the second inflow free edge define a gap therebetween when the leaflet is not in the closed position, wherein fluid adjacent a second outflow side can pass through the gap during fluid flow in a forward direction. 19492896_1 (GHMatters) P112405.AU.2