Orthopaedic device comprising at least one actuator

An orthopaedic device, comprising:

• at least one portion, referred to as an upper exoskeleton, suitable for forming an abutment in contact with a first part of the human body,
• at least one portion, referred to as a lower exoskeleton, suitable for forming an abutment in contact with a second part of the human body,
• an actuator, referred to as a receiving actuator, comprising:
• a pivot-connection member having at least one pivot axis, said upper exoskeleton and said lower exoskeleton being hinged with respect to one another via said pivot-connection member,
• a receiving transmission device designed to be able to transmit a movement to the pivot-connection member, and
• at least a first hydraulic cylinder, referred to as a first receiving cylinder, coupled to the receiving transmission device so as to be able to rotate the pivot-connection member,
• an actuator, referred to as an emitting actuator, comprising:
• a motor device, and
• two hydraulic cylinders, referred to respectively as a first emitting cylinder and a second emitting cylinder, each comprising a piston and an associated cylinder, and
• two pressurized-fluid-guiding hydraulic lines connected to the first emitting cylinder and to the second emitting cylinder, respectively, and designed to allow a hydraulic transmission of movement from the emitting actuator to the receiving actuator,
• wherein the emitting actuator further comprises an emitting transmission device of a screw-nut type coupled to the motor device;
• a rotor of the motor device is coupled to a screw of the emitting transmission device, this screw interacting with the thread of a nut connected mechanically to the respective pistons of the first emitting cylinder and of the second emitting cylinder;
• and
• the first emitting cylinder and the second emitting cylinder are installed in opposition and mechanically connected to the nut of the emitting transmission device such that when said nut is moved in translation by a rotational action of the screw of the emitting transmission device, the piston of the first emitting cylinder enters the associated cylinder and the piston of the second hydraulic emitting cylinder leaves the associated cylinder, and vice versa.