EP 0951257 A1 19991027 - ARTIFICIAL JOINT, IN PARTICULAR ENDOPROSTHESIS FOR REPLACING NATURAL JOINTS
Title (en)
ARTIFICIAL JOINT, IN PARTICULAR ENDOPROSTHESIS FOR REPLACING NATURAL JOINTS
Title (de)
KUNSTLICHES GELENK, INSBESONDERE ENDOPROTHESE ZUM ERSATZ NATURLICHER GELENKE
Title (fr)
ARTICULATION ARTIFICIELLE, NOTAMMENT ENDOPROTHESE POUR REMPLACER DES ARTICULATIONS NATURELLES
Publication
Application
Priority
- DE 19646891 A 19961113
- EP 9706315 W 19971112
Abstract (en)
[origin: DE19646891A1] The invention concerns an artificial joint, in particular an endoprosthesis for replacing natural joints, comprising at least two artificial joint parts with curved articulation faces, a curved contact line being formed on each of the articulation faces. The curved contact line (L1) of one of the articulation faces is part of an elliptical section contour of a first cylinder (1) or cone having the cylinder radius (R1) or the cone angle ( alpha 1). The other contact line (L2) takes the form of a counter track of a second cylinder (2) or second cone having the cylinder radius (R2) or the cone angle ( alpha 2) and rolling and/or sliding on the first cylinder (1) or first cone. The articulation faces comprise control faces (F1, F2) formed from a plurality of straight contact lines (B). On one side, these control faces (F1, F2) adjoin the contact lines (L1, L2) opposite one another, and each of the contact lines is the connection line between an instantaneous contact point (K) of the contact lines (L1, L2) and an instantaneous common point (Q) or the instantaneous pole of the respective movement systems in a reference plane (X, Y) or a reference sphere in the moved/unmoved system.
IPC 1-7
IPC 8 full level
A61F 2/38 (2006.01)
CPC (source: EP US)
A61F 2/38 (2013.01 - EP US)
Citation (search report)
See references of WO 9820816A1
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
DE 19646891 A1 19980514; EP 0951257 A1 19991027; JP 2000507486 A 20000620; JP 3674046 B2 20050720; US 6235060 B1 20010522; WO 9820816 A1 19980522
DOCDB simple family (application)
DE 19646891 A 19961113; EP 9706315 W 19971112; EP 97953682 A 19971112; JP 52218298 A 19971112; US 30804799 A 19990701