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:
Apr. 20, 1993
Filed:
Jul. 10, 1991
Applicant:
Inventors:
David L Evans, Bartlett, TN (US);
Mark S Gosney, Memphis, TN (US);
Assignee:
Smith & Nephew Richards Inc., Memphis, TN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
623 20 ;
Abstract
A knee replacement prosthesis includes a tibial component and a femoral component with improved articular surface geometries. The improved geometries allow substantial internal rotation of the tibial component with respect to the femoral component during at least the first twenty degrees (20.degree.) of flexion. The tibial and femoral components are capable of flexing about an axis that reaches an inclination of from about ten degrees (10.degree.) to about fifty degrees (50.degree.) to the horizontal.