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:
Nov. 06, 2001
Filed:
Jan. 11, 2000
Dietmar Kubein-Meesenburg, Kreiensen, DE;
Hans Naegerl, Gleichen, DE;
HJS Gelenk-System GmbH, Munich, DE;
Abstract
An artificial condyle (,) for use in a human hip joint in which the condyle has a spherical joint shell (,) which has a radius of curvature R,and a curvature midpoint M,and in cross-section a circular concave section contour. A functional surface which is convex at least in a region which articulates in the joint shell (,) is designed as a sphere such that when it is inserted in the shell (,), in a longitudinal plane X—X passing through the midpoint M,, a radius R,=R,is formed which has a midpoint M,coinciding with M,. A transverse plane Y—Y perpendicular to the longitudinal plane X—X has, passing through the midpoint M,, a radius R,<R,having the midpoint M,. In the transverse plane Y—Y a stable dimeric joint chain is formed, with which the joint axis path of the midpoints M,and M,has a joint path radius R=R,−R,.