Devices and methods of commissure formation for prosthetic heart valve

A prosthetic valve, comprising:

• an annular frame including a plurality of strut members, the frame being radially collapsible to a collapsed configuration and radially expandable to an expanded configuration;
• a leaflet structure situated at least partially within the frame, the leaflet structure comprising a plurality of leaflets, each leaflet comprising opposing commissure tab portions on opposite sides of the leaflet, each commissure tab portion being paired with an adjacent commissure tab portion of an adjacent leaflet to form a commissure, the commissure tab portions of each leaflet being folded to form a plurality of layers positioned on the inside of the frame;
• and
• a commissure attachment member positioned at the commissure, the commissure attachment member comprising an inner sleeve;
• wherein the commissure tab portions of the commissure are received in the inner sleeve of the commissure attachment member.

A prosthetic valve, comprising:

• an annular frame including a plurality of strut members, the frame being radially collapsible to a collapsed configuration and radially expandable to an expanded configuration;
• a leaflet structure situated at least partially within the frame, the leaflet structure comprising a plurality of leaflets, each leaflet comprising opposing commissure tab portions on opposite sides of the leaflet, each commissure tab portion being paired with an adjacent commissure tab portion of an adjacent leaflet to form a commissure, the commissure tab portions of each leaflet being folded to form a plurality of layers positioned on the inside of the frame;
• a plurality of reinforcement members, a reinforcement member of the plurality of reinforcement members being positioned between the layers of each commissure tab portion;
• and
• a commissure attachment member positioned at the commissure, the commissure attachment member comprising an inner sleeve;
• wherein the commissure tab portions and the reinforcement members of the commissure are received in the inner sleeve of the commissure attachment member.