Artificial valve

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

• blood pressure on at least one side of the artificial valve or a 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 a circulatory system of the mammal body,
• a physical parameter which is related to a contraction of a muscle at a defined point in the mammal body,
• a body generated parameter related to a contraction of the mammal body's heart muscle,
• a device generated signal related to a contraction of the mammal body's heart muscle, in which the closing mechanism comprises a curved part with a groove in it, said groove comprising a first plurality of portions of a first part and a second plurality of portions of a second part, wherein the portions of the first part and the portions of the second part are alternatingly provided along the curved part, and in which the plurality of portions of the first part have a different slanting than the plurality of portions of the second part, and the closing mechanism also comprises at least one pin arranged on the first moving part, 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.