Orthopedic joint
AssigneeOttobock SE & Co. Kgaa
InventorHerman Boiten
Life of this patent
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Abstract
An orthopedic joint for a prosthesis, includes an upper part, a lower part which is mounted on the upper part in a pivotal manner about a pivot axis, and a rotation hydraulic unit, which has a housing with a chamber and a pivot piston that is pivotally mounted in the chamber and divides the chamber into a flexion chamber and an extension chamber, the chambers being hydraulically connected together via at least one channel. The joint also includes a pretensioning device which supports a pivoting movement of the upper part relative to the lower part, wherein the pretensioning device is coupled directly to the pivot piston via a support.
Claims18
An orthopedic joint, comprising:
- an upper part;
- a lower part mounted on the upper part so as to pivot about a pivot axis;
- a rotation hydraulics unit, comprising:
- a housing with a chamber;
- a pivot piston which is mounted pivotably in the chamber and divides the chamber into a flexion chamber and an extension chamber, the flexion and extension chambers being connected hydraulically to each other via at least one channel;
- a pretensioning device which assists a pivoting movement of the upper part relative to the lower part, the pretensioning device comprising a support and a slide piece, wherein the support is coupled directly to the pivot piston at a coupling point and to the slide piece at a lower bearing point, wherein the support is positioned in a hydraulic fluid.
An orthopedic joint, comprising:
- an upper part;
- a lower part pivotally mounted on the upper part about a pivot axis;
- a rotation hydraulics unit, comprising:
- a housing having a chamber;
- a pivot piston mounted pivotably in the chamber to divide the chamber into a flexion chamber and an extension chamber, the flexion and extension chambers being connected hydraulically via at least one channel;
- a pretensioning device connecting the flexion and extension chambers, operable to assist a pivoting movement of the upper part relative to the lower part, the pretensioning device comprising a support and a slide piece, wherein the support is coupled directly to the pivot piston at a coupling point and to the slide piece at a lower bearing point, wherein the support is positioned in a hydraulic fluid.
Dependencies are inferred from the claim text.