Abstract: A vessel valve including a sleeve or ring having a central opening and openable and closeable flap elements intended to allow the flow of blood through the central opening in one direction, whereas the flap elements are designed as circle segments, and the sector angle is 360 ? ° n wherein n is a number of circle segments and is equal to 3, 4, 5 or 6, and wherein each flap element at its outer edge is pivotably connected to an inwardly directed flange on the inside of the ring so that in a closed position they co-operate to form a sealing body and in an open position they allow free passage of blood. The ring is composed of n sections, whose pair-wise juxtaposed ends form recesses in the flange accommodating hinge elements which are arranged in the middle of the outer edge of each of the flap elements and which with assembled sections are locked by undercutting; and a method for the manufacture of such vessel valve.

Abstract: 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.degree./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.