| 摘要 |
A bi-leaflet heart valve (10) having an improved hinge arrangement that allows the valve to respond quickly to flow reversals and minimizes fluttering of the leaflets (14) in the open position. A pair of leaflets (14) are slidable and pivotally mounted in a heart valve body (12) for movement between closed and open positions. Notches (53) in the leaflets (14) matingly engage complementary surfaces on pivot projections extending inward from the valve body sidewall (20). Downstream stops (27) interengage with complementary surfaces on the leaflets (14) to cushion the final opening movement and reduce wear in critical locations to improve operating characteristics. |
