A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/24 (2006.01)
Patent
CA 2305730
The durability of tri-leaflet valves is improved by moving the point of maximum loaded stress on the free edge (18) of the leaflet (14) away from the location of stress risers. The point of maximum loaded stress is moved by changing the geometry of the attachment curve (16) between the leaflet (14) and the valve body (12). The geometry of the attachment curve (16) is changed by changing the shape of the valve body (12) or the shape of the leaflet (14).
On améliore la durabilité de valvules à trois valves en éloignant le point de contrainte maximum appliquée sur le bord libre (18) de la valve (14), de l'emplacement des facteurs d'augmentation de la contrainte. On déplace le point de contrainte maximum appliquée, en modifiant la géométrie de la courbe d'attache (16) entre la valve (14) et le corps de valvule (12). On modifie la géométrie de la courbe d'attache (16) en modifiant la forme du corps de valvule (12) ou la forme de la valve (14).
Moe Riyad E.
Ryder John Kenneth
Bereskin & Parr
Sulzer Carbomedics Inc.
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