Abstract: The invention relates to an orthotic or prosthetic joint device with an upper part and a lower part arranged in a hinged manner and fastening means for securing the joint device on a user, with at least one hydraulics unit between the upper part and the lower part, which hydraulics unit has a piston that is movable in a housing with an extension chamber and a flexion chamber and that is coupled to the upper part or the lower part, and which hydraulics unit is assigned a pressure supply device with a pump and a pressure accumulator via which the piston, controlled by a control device, is subjected to a pressure, wherein the pump can be operated in generator mode, the pressure accumulator can be coupled drivingly to the pump, and the hydraulic fluid can be conveyed by the pressure accumulator through the pump to the hydraulics unit.

Abstract: The invention relates to an orthotic or prosthetic joint device with an upper part and a lower part arranged in a hinged manner and fastening means for securing the joint device on a user, with at least one hydraulics unit between the upper part and the lower part, which hydraulics unit has a piston that is movable in a housing with an extension chamber and a flexion chamber and that is coupled to the upper part or the lower part, and which hydraulics unit is assigned a pressure supply device with a pump and a pressure accumulator via which the piston, controlled by a control device, is subjected to a pressure, wherein the pump can be operated in generator mode, the pressure accumulator can be coupled drivingly to the pump, and the hydraulic fluid can be conveyed by the pressure accumulator through the pump to the hydraulics unit.

Abstract: An orthotic or prosthetic joint device with an upper part and a lower part arranged in a hinged manner on the latter, and a fastening member for securing the joint device on a user. The device includes at least one hydraulics unit positioned between the upper part and the lower part, which hydraulics unit has a piston that is movable in a housing with an extension chamber and a flexion chamber and that is coupled to the upper part or the lower part. The hydraulics unit is assigned a pressure supply device with a pump and a pressure accumulator via which the piston, controlled by a control device, is subjected to a pressure. The pump can be operated in generator mode, the pressure accumulator can be coupled drivingly to the pump, and the hydraulic fluid can be conveyed by the pressure accumulator through the pump to the hydraulics unit.

Abstract: The invention relates to an orthotic or prosthetic joint device with an upper part (2) and a lower part (3) arranged in a hinged manner on the latter, and fastening means (4, 5) for securing the joint device (1) on a user, with at least one hydraulics unit (10) between the upper part (2) and the lower part (3), which hydraulics unit (10) has a piston (12) that is movable in a housing (11) with an extension chamber (14) and a flexion chamber (15) and that is coupled to the upper part (2) or the lower part (3), and which hydraulics unit (10) is assigned a pressure supply device (20) with a pump (21) and a pressure accumulator (23) via which the piston (12), controlled by a control device (60), is subjected to a pressure, wherein the pump (21) can be operated in generator mode, the pressure accumulator (23) can be coupled drivingly to the pump (21), and the hydraulic fluid can be conveyed by the pressure accumulator (23) through the pump (21) to the hydraulics unit (10).