Method for controlling an orthopedic joint device
AssigneeOttobock SE & Co. Kgaa
InventorsMartin Pusch, Christian Will
Life of this patent
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Abstract
A method for controlling an orthopaedic joint device of a lower extremity. The joint device has an upper part and a lower part mounted in a hinged manner on the latter. Arranged between the upper part and the lower part is an energy converter by which, during walking, kinetic energy from the relative movement between the lower part and the upper part is converted or stored and supplied again to the joint in order to support the relative movement, wherein kinetic energy within one movement cycle is converted and/or stored and, within the same movement cycle, is supplied again as kinetic energy to the joint device in a controlled manner and staggered in time.
Claims10
A method for controlling an orthopedic joint device of a lower extremity, the orthopedic joint device having an upper part and a lower part mounted in an articulated manner thereon, the method comprising:
- providing an energy conversion device arranged between the upper part and the lower part, the energy conversion device comprising a hydraulic cylinder, a spring, and a piston arranged on a piston rod, the piston separating the hydraulic cylinder into an upper chamber and a lower chamber, the spring arranged within the lower chamber;
- converting and storing kinetic energy from relative movement between the lower part and the upper part with the energy conversion device;
- and
- feeding back the kinetic energy to the orthopedic joint device with the energy conversion device after extension during a stance phase and only during the stance phase to assist with a flexion movement of the lower part relative to the upper part;
- wherein within a movement cycle, the kinetic energy is converted and stored and, within the same movement cycle, is fed back to the orthopedic joint device in a controlled manner after a time delay such that the energy feedback does not occur immediately after converting and storing of the kinetic energy.
A method for controlling an orthopedic joint device of a lower extremity, the orthopedic joint device having an upper part and a lower part mounted in an articulated manner thereon, the method comprising:
- providing an energy conversion device arranged between the upper part and the lower part, the energy conversion device comprising a hydraulic cylinder, a spring, and a piston arranged on a piston rod, the piston separating the hydraulic cylinder into upper and lower chambers, the lower chamber increasing in volume during a flexion movement of the lower part relative to the upper part, the spring being arranged within the lower chamber;
- converting and storing kinetic energy from relative movement between the lower part and the upper part with the energy conversion device;
- and
- feeding back the kinetic energy to the orthopedic joint device with the energy conversion device after extension during a stance phase and only during the stance phase to assist with the flexion movement of the lower part relative to the upper part;
- wherein within a movement cycle, the kinetic energy is converted and stored and, within the same movement cycle, is fed back to the orthopedic joint device in a controlled manner after a time delay such that the energy feedback does not occur immediately after converting and storing of the kinetic energy.
Dependencies are inferred from the claim text.