Patent ID: 8568475

Claim:
An implantable prosthetic valve, comprising: a radially collapsible and expandable annular frame; an annular skirt coupled to an inner side of the frame; a leaflet structure positioned within the frame and the annular skirt and comprising a plurality of leaflets each comprising two opposing side tabs, wherein each leaflet comprises a separate piece of material, wherein each side tab is rolled into a spiral and each spiral is positioned next to an adjacent spiral of an adjacent leaflet to form a plurality of annularly spaced commissures of the leaflet structure, and wherein each spiral is coupled to the annular skirt; wherein the side tab of each spiral is rolled around a central longitudinal axis of the spiral greater than 360 degrees such that at least two layers of the side tab are in contact with each other; wherein the skirt comprises a single sheet of material that extends continuously around the leaflet structure, and each leaflet has an inflow end portion that is sutured to the skirt by a suture line that extends along the inflow end portion of each leaflet.