| 摘要 |
A cardiac valve includes a sleeve or ring having an inlet end and an outlet end and which is provided with a central opening (4), and openable and closable flaps having for their purpose to allow flow of blood through the central opening (2) in one direction, the flaps (9a-c) being designed as circle segments, where the sector angle has the value 360 DEG /n, where n is the number of circle segments and is 3, 4, 5 or 6. The flaps (9a-c) are at their outer edges pivotably connected to the inside of the ring (3) at the inlet end thereof, in that each flap (9a-c) is connected to the ring (3) by means of a hinge which is arranged in the center of the outer edge of the flap and which is accommodated in a recess in the ring (3), whereby the flaps in a closed position cooperate to form a sealing body and in an open position allow a free passage of blood.
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