The present invention relates to artificial contractile structures generally devised to be used in the medical field. Such structures may be advantageously used to assist the functioning of an organ. The medical device comprises an artificial contractile structure comprising at least two contractile elements (100) adapted to contract an organ, in such way that each of said contractile elements (100) can be in a resting or in an activated position, independently of the position of each other, the activated position being defined with said contractile element (100) constricting the organ and the resting position being defined with said contractile element (100) not constricting the organ, and at least one actuator designed to activate said contractile structure. Each contractile element (100) is connected to an adjacent contractile element (100), while remaining flexible one with respect to the other.
