Artificial valve

An artificial valve for implantation in a mammal body, in or adjacent to a mammal blood vessel, the artificial valve comprising a casing and a closing mechanism, with at least part of said closing mechanism being a first moving part which is adapted to make movements relative to the casing, said movements comprising movements to assume an open and a closed position for opening and closing, respectively, of the blood flow through said blood vessel, as well as positions between said open and closed positions the closing mechanism being adapted to let the first moving part initiate and carry out its movements as the result of a predefined threshold value being reached by a physical parameter of the mammal or a functional parameter of a device used by the mammal, the physical or functional parameter being one or more of the following:

• the blood pressure on at least one side of the artificial valve or the difference in blood pressure between an inner and an outer side of the artificial valve in its closed position,
• the blood flow at a defined point in the circulatory system of the mammal,
• a physical parameter which is related to the contraction of a muscle at a defined point in the mammal,
• a body generated parameter related to the contraction of the mammal's heart muscle,
• a device generated signal related to the contraction of the mammal's heart muscle, in which the closing mechanism comprises a curved part with a groove in it, said groove comprising parts which are alternatingly slanted with respect to each other, and the closing mechanism also comprises at least one pin arranged on one of the moving parts, said pin being arranged to run in said groove, with the moving part being caused to move as a result of the pin's movement in the groove.