| 摘要 |
<p>A mitral heart valve annuloplasty ring (30) having a posterior bow that conforms to an abnormal posterior aspect of the mitral annulus. The ring (30) may be generally oval having a major axis and a minor axis, wherein the posterior bow may be centered along the minor axis or offset in a posterior section (36). The ring may be substantially planar, or may include upward bows on either side of the posterior bow. The ring may include a ring body (30) surrounded by a suture-permeable fabric sheath, and the ring body may be formed of a plurality of concentric ring elements (70a,70b,70c,70d). The ring is semi-rigid and the posterior bow is stiff enough to withstand deformation once implanted and subjected to normal physiologic stresses. The ring elements (70a,70b,70c,70d) may be bands of semi-rigid material. A method of repairing an abnormal mitral heart valve annulus having a depressed posterior aspect includes providing a ring with posterior bow and implanting the ring to support the annulus without unduly stressing the attachment sutures.</p> |
