Annuloplasty rings for correcting degenerative valvular diseases

Abstract

A set of annuloplasty rings progressively sized to take into account more of the common pathologies. The proportional shapes of each ring as the orifice size changes vary. For instance, the larger rings have larger minor axis dimensions relative to their major axis dimensions.

1 . A set of mitral annuloplasty rings comprising:
 a set of closed and generally rigid ring bodies arranged around a flow axis having an upward direction and a downward direction, the downward direction corresponding to the direction of blood flow through the mitral valve annulus when the annuloplasty ring is implanted, the ring body being generally D-shaped in plan view and defining a major axis A and a minor axis B, and each ring having a nominal orifice size in even mm increments; and   wherein the ratio B/A increases with increasing nominal orifice sizes of the ring bodies.   
     
     
         2 . A set of mitral annuloplasty rings comprising:
 a set of closed and generally rigid ring bodies arranged around a flow axis having an upward direction and a downward direction, the downward direction corresponding to the direction of blood flow through the mitral valve annulus when the annuloplasty ring is implanted, the ring body being generally D-shaped in plan view and defining a major axis A and a minor axis B, and each ring having a nominal orifice size in even mm increments; and   wherein the proportional shape of the ring bodies changes with increasing nominal orifice sizes of the ring bodies.