Compact device designed to be positioned close to a joint and general system comprising such a compact device

The invention relates to a device designed to be positioned close to a joint between two parts, the device comprising a first interface (11) borne by a first of the two parts and a second interface (22) borne by a second of the two parts, the device comprising at least one connection between the first interface and the second interface. According to the invention, the connection comprises two actuators (31, 32) mounted in parallel such that each actuator is connected by its output rod to the first interface and by its body to the second interface, the simultaneous movement of the two output rods (35, 36) serving, in operation, to move the second part of the joint relative to the first part of the joint. The invention also relates to a system comprising such a device and to a unit for supplying fluid to said device.