Leaflet Abrasion Mitigation in Prosthetic Heart Valves
AssigneeSt. Jude Medical, Cardiology Division, Inc.
InventorsPeter N. Braido, Kent J. Smith, Andrea L. McCarthy, Mina S. Fahim
Life of this patent
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Abstract
A prosthetic heart valve includes a stent extending in a longitudinal direction, the stent being formed of a plurality of struts forming cells and having a plurality of commissure features, a collapsed condition and an expanded condition. A valve assembly may be secured to the stent, the valve assembly including a cuff and a plurality of leaflets. The cuff may be formed of a fabric and a second material different from the fabric, the cuff having commissure peaks and a plurality of midpeaks disposed between the commissure peaks. Each of the leaflets may have a free edge.
Claims18
A prosthetic heart valve, comprising:
- a stent extending in a longitudinal direction, the stent being formed of a plurality of struts forming cells and having a plurality of commissure features, a collapsed condition and an expanded condition;
- a valve assembly secured to the stent, the valve assembly including a cuff and a plurality of leaflets, the cuff being formed of a fabric and a second material different from the fabric, the cuff having commissure peaks and a plurality of midpeaks disposed between the commissure peaks, each of the leaflets having a free edge, the cuff including a plurality of triangular buffers formed from the second material, each of the triangular buffers including three edges and being disposed at one of the midpeaks.
A prosthetic heart valve, comprising:
- a stent extending in a longitudinal direction, the stent being formed of a plurality of struts and having a plurality of commissure features, a collapsed condition and an expanded condition;
- a valve assembly secured to the stent, the valve assembly including a cuff and a plurality of leaflets, each of the leaflets having a free edge and being capable of alternating between an open position and a closed position;
- and
- at least one buffer strip coupled to at least one of the plurality of struts and configured and arranged to minimize abrasion of the free edge of the leaflet in the open position, the at least one buffer strip including two buffer strips arranged in a V-shaped cushion.
Dependencies are inferred from the claim text.