| 摘要 |
<p>An apparatus (10) for helping improve operation of a heart valve includes a generally annular base (12) and a buttress (20) extending generally axially from and inwardly relative to an arc portion of the base (12). When the apparatus (10) is when implanted at an annulus of a heart valve, the buttress (20) thereof provides a surface with which a leaflet of the heart valve may move into and out of engagement for helping control blood flow relative to the apparatus (10) and heart valve.</p> |
