| 摘要 |
Disclosed herein is an artificial heart valve, comprising a valve housing comprising a distal plate and a proximal valve ring operably connected by a plurality of struts; one or more helical springs having a proximal end and a distal end; and a bellows spring having a proximal end, enclosed area, and a distal end, the distal end of the bellows spring operably attached to a first surface of a moving spring plate positioned axially in between the one or more helical springs and the bellows spring, the proximal end of the helical spring operably attached to a second surface of the moving spring plate; and a movable valve plate operably attached to the proximal end of the bellows spring, wherein the movable valve plate is configured to reversibly contact the proximal valve ring to create a seal and close the valve. |
| 主权项 |
1. An artificial heart valve, comprising:
a moveable valve ring that moves to a flat gate plate to form a seal valve; a flat contact area between the moveable valve ring and the valve plate, to minimize the force per unit area of contact between the moveable valve ring and the valve plate; and a bellows spring operably attached to the moveable valve ring, wherein the bellows spring is operably hung to a helical spring assembly, wherein an end of the helical spring assembly is operably attached to a cage housing, wherein the bellows spring has a first spring constant and the helical spring assembly has a second spring constant, the first spring constant and the second spring constant configured to assist in opening and closing of the valve, minimizing pressure and keeping movement gentle, wherein the bellows spring and the helical spring assembly are configured to isolate pressure on the valve, and substantially prevent high pressure forces from acting on the valve, wherein the bellows spring is suspended on the helical spring assembly, reducing the pressure on the valve, and wherein the valve is configured such that the valve gate force is effected substantially only by an area of the moveable valve ring that contacts the flat gate plate to seal the valve, minimizing the effect of blood pressure on valve pressure. |
