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:
Jul. 24, 2001
Filed:
Jan. 03, 2000
Bernard Reigner, Le Mans, FR;
Jean-François Biegun, Chaumont, FR;
Pascal Marceaux, Chaumont, FR;
Aesculap, , FR;
Abstract
A knee endoprosthesis comprising: a tibial part comprising a tibial rod bearing a tibial plate, a first tibial insert (,) disposed on the tibial plate, a femoral part comprising a femoral rod bearing two condyles (,) each having a first sliding surface co-operating and congruent with a respective second sliding surface formed on the first tibial insert (,), wherein the tibial part is coupled to the femoral part so that the femur can bend relative to the tibia from a position (&agr;≈0) where the knee is extended to a position (&agr;,) where the knee is bent and vice versa. A progressive locking element is provided for limiting the lateral rotation and proper rotation of the condyles (,) relative to the tibial plate, starting from a knee-bending angle &agr;,determined in advance and up to a zero angle, the amplitude of proper rotation, when the angle &agr;,is decreased, varying down to zero amplitude (complete blocking) at zero angle (unbent knee).