METHODS FOR REPAIRING MITRAL VALVES

摘要

Methods of remodeling an abnormal mitral valve with an annuloplasty ring having a reduced anterior-to-posterior dimension to restore coaptation between the mitral leaflets in mitral valve insufficiency (IMVI). The ring has a generally oval shaped body with a major axis perpendicular to a minor axis. An anterior section lies between anteriolateral and posteriomedial trigones, while a posterior section defines the remaining ring body and is divided into P1, P2, and P3 segments. The anterior-to-posterior dimension of the ring body is reduced from conventional rings; such as by providing, in atrial plan view, a pulled-in P3 segment. The ring body may have a downwardly deflected portion in the posterior section. The downwardly deflected portion may have an apex which is the lowest elevation of the ring body and may be offset with respect to the center of the downwardly deflected portion toward the P3 segment.

主权项

1. A method of performing annuloplasty of a mitral valve having valve leaflets and a condition resulting in diminished valve leaflet coaptation comprising:
determining a transverse dimension and an anterior-posterior dimension of the mitral valve annulus; selecting for implantation to the mitral valve annulus a mitral valve annuloplasty ring having a ring body covered by a suture-permeable sewing cuff, the ring body defining an orifice having a major axis perpendicular to a minor axis, the major and minor axes being generally perpendicular to a flow axis, wherein
a) a major axis dimension of the ring body is less than the annulus transverse dimension, andb) a ratio of a minor axis dimension of the ring body to the major axis dimension is less than the ratio of the anterior-posterior dimension to the transverse dimension of the mitral valve annulus; and implanting the ring so as to constrict the native annulus and restore healthy coaptation between the leaflets without reducing excessively the overall orifice area of the ring.