Hydraulic damping cylinder, in particular for a knee prosthesis

A hydraulic damping cylinder for a prosthetic knee joint, including a housing, a cylinder chamber in the housing and filled with a hydraulic fluid, and a piston arranged in the cylinder chamber and movable by a piston rod. In the housing there are provided at least two separate receiving chambers, w...

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Bibliographische Detailangaben
Hauptverfasser:	Tschupp, Gabriel, Kamm, Thomas, Zobirei, Sören, Dressler, Janek
Format:	Patent
Sprache:	eng
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS BLASTING DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS ENGINEERING ELEMENTS AND UNITS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HUMAN NECESSITIES HYGIENE LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL TREATMENT OR PROTECTION OF EYES OR EARS WEAPONS
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Beschreibung
Zusammenfassung:	A hydraulic damping cylinder for a prosthetic knee joint, including a housing, a cylinder chamber in the housing and filled with a hydraulic fluid, and a piston arranged in the cylinder chamber and movable by a piston rod. In the housing there are provided at least two separate receiving chambers, which are of different size and are connected to the cylinder chamber by fluid ducts, for hydraulic fluid displaced from the cylinder chamber during a piston movement The receiving chambers are each separated, by a diaphragm, from a compression chamber filled with a compressible fluid that forms an energy store. Upstream of the larger receiving chamber, there is connected a throttle device which forms a flow resistance for the hydraulic fluid flowing into the receiving chamber so that the hydraulic fluid can be distributed to the two receiving chambers in a manner dependent on speed of the piston movement.