Cardiac valve

Details Cardiac valve Cardiac valve

A - Human Necessities

61

F

A61F 2/24 (2006.01)

Patent

CA 2131714

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 a has the value 360~/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.

Une valve cardiaque comprend un tube ou un anneau doté d'une entrée et d'une sortie, d'une ouverture centrale (4), et de volets (9a-c), pouvant s'ouvrir ou se fermer pour permettre au sang de passer dans cette ouverture centrale (4) dans une direction, et conçus en segments de cercle, où l'angle de secteur alpha vaut 360 /n, où n représente le nombre de segments de cercle et vaut de 3 à 6. Ces volets (9a-c) sont raccordés, de manière à pouvoir pivoter, à l'intérieur de l'anneau (3) au niveau de son entrée, au moyen d'une charnière disposée au centre de chacun de leurs bords externes et logée dans un évidement pratiqué dans l'anneau (3). Ces volets coopèrent ainsi, en position fermée pour former un obturateur étanche, et en position ouverte pour laisser le sang s'écouler librement.

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