| 摘要 |
Cardiac valve, so called heart valve, comprising 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 (4) in one direction, the flaps (9a-c) being designed as circle segments, where the sector angle designated alpha has the value 360 DEG /n, where n is the number of circle segments and is 3, 4, 5 or 6, said flaps (9a-c) being at their outer edges pivotably connected to the inside of the ring (3) at said 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 said ring (3), whereby said flaps in a closed position cooperate to form a sealing body and in an open position allow a free passage of blood. |
