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:
Sep. 12, 2006
Filed:
Jan. 31, 2003
Joseph D. Lipman, New York, NY (US);
Russell F. Warren, Greenwich, CT (US);
Thomas L. Wickiewicz, Franklin Lakes, NJ (US);
Timothy M. Wright, Stamford, CT (US);
Donald L. Bartel, Ithaca, NY (US);
Frank Hoffman, Prutting, DE;
Christoph Fankhauser, Solothurn, CH;
Daniel Delfosse, Bern, CH;
Walter Supper, Bettlach, CH;
Joseph D. Lipman, New York, NY (US);
Russell F. Warren, Greenwich, CT (US);
Thomas L. Wickiewicz, Franklin Lakes, NJ (US);
Timothy M. Wright, Stamford, CT (US);
Donald L. Bartel, Ithaca, NY (US);
Frank Hoffman, Prutting, DE;
Christoph Fankhauser, Solothurn, CH;
Daniel Delfosse, Bern, CH;
Walter Supper, Bettlach, CH;
Mathys Medical Ltd., Bettlach, CH;
Abstract
A prosthesis for repairing a knee is made with an insert sandwiched between a femoral component and a tibial tray. The parts are shaped so that both the femoral component and the tibial tray will slidingly interface with the insert during motion of the knee. At regions where the femoral component interfaces with the insert during extension and during an initial range of flexion of the knee, the femoral component's radius of curvature (R) for flexion rotation is larger than its radius of curvature (R) for varus/valgus rotation. In a preferred embodiment, the surface of the tibial tray is convex and spherically curved, and the insert is free to move in both the posterior-anterior direction and the medial-lateral direction with respect to the tibial tray.