The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 1994
Filed:
Dec. 01, 1992
Ueli Wehrli, Wabern, CH;
Walter Moser, Herrenschwanden, CH;
Protek AG, Muensingen-Bern, CH;
Abstract
With the invention is shown an artificial knee joint, in which the rear cruciate ligament and the collateral ligaments are assumed as being retained. A metal platform is attached to the tibia and perpendicular to the tibia axis has a plane surface, on which three slide members are slidably disposed so as to guide the metal platform relative to the femur condyles made of metal within the limits of the degree of freedom remaining to them under the tension of the ligaments. A central slide member forms an eminentia rotatable around a pin, which guides the femur condyles directly or indirectly with respect to rotation around the tibia axis and which along its median line, which extends in the sagittal direction in the non-rotated central position, forms a direct or indirect longitudinal guiding device for the femur condyles, while the flexion movement is guided at doubly curved femur condyles by the two outer slide members.