A kit according to the invention includes a tool and an implantable chamber. The implantable chamber comprises a hollow main body delimiting an internal volume opening outwards via a main opening. It further comprises a septum mounted on the main body to close the main opening, and at least one conduit extending from the main body. It also comprises a displacement member, movable relative to the main body, that projects from the main body via the conduit and actuates or sets in motion an element situated in the body of the patient. It lastly comprises a drive mechanism for driving the displacement member situated in the internal volume of the main body, in order to move the displacement member with respect to the main body. The tool includes a proximal maneuvering region and a distal region that is capable of piercing the septum to actuating the drive mechanism.
