| 摘要 |
An artificial valve (5; 10; 20; 30; 50) for implantation in a mammal body, in or adjacent to a blood vessel, comprising a casing (12; 37; 61) and a closing mechanism. Part of the closing mechanism is a moving part (11; 21, 22; 31, 32, 33; 51) adapted to make movements to assume an open and a closed position for opening and closing of the blood vessel and positions between said open and closed positions, the closing mechanism (11; 21, 22; 31, 32, 33; 51) is adapted to let the moving part initiate and carry out its movements when a predefined threshold value is reached by a physical parameter of the mammal or a functional parameter of a device (8) used by the mammal. The closing mechanism is arranged to power at least one of said movements of the moving part (51) and to let a movement of the moving part take place passively. |
