A medical device including an artificial contractile structure which may be advantageously used to assist the functioning of a hollow organ. Specifically, the medical device includes an artificial contractile structure with at least one contractile element adapted to contract an organ, in such way that the contractile element is in a resting or in an activated position, at least one actuator designed to activate the contractile structure, and at least one source of energy for powering the actuator. The medical device also includes a means for reducing corrosion of the medical device hence reducing the risk of the device dysfunction and patient contamination.
