EP 1152717 A1 20011114 - PRESS FIT CONNECTION BETWEEN PROSTHETIC COMPONENTS OF JOINT PROSTHESES
Title (en)
PRESS FIT CONNECTION BETWEEN PROSTHETIC COMPONENTS OF JOINT PROSTHESES
Title (de)
KLEMMSITZVERBINDUNG ZWISCHEN PROTHESENKOMPONENTEN VON GELENKPROTHESEN
Title (fr)
ASSEMBLAGE PAR BLOCAGE ENTRE DES COMPOSANTS DE PROTHESES D'ARTICULATION
Publication
Application
Priority
- DE 19904437 A 19990204
- EP 0000186 W 20000113
Abstract (en)
[origin: DE19904437A1] Joint prostheses in which one joint partner is configured as a socket and the other joint partner is configured as a ball head, said ball head being rotatably mounted in the socket, are used, in particular, as shoulder joint and hip joint prostheses. The press fit connection, in particular, conical pressing, is also used as a technique for connecting metallic or ceramic ball heads to the cone. To this end, the ball head provided with a conical boring is placed on the cone. After placing the ball head on the cone, the ball head is subjected to an impact in order to fix the two components. To obtain a conical pressing, the joining surfaces of the boring in the ball head and of the cone must be machined with extreme precision, otherwise the durability of the conical pressing is jeopardized by a non-uniform introduction of force into the ball head or into the pivot. If the ball head is made of ceramic, fissuring can result due to stress peaks in the material, and in the worst case scenario, can lead to a destruction of the ball head. According to the invention, a coupling element (5) is thus provided which is inserted between the cone (5) and the ball head (3) of the press fit connection (1) and whose elasticity and damping properties can be predetermined by the porosity thereof and by the structure of its surface.
IPC 1-7
IPC 8 full level
A61F 2/30 (2006.01); A61F 2/36 (2006.01); A61F 2/00 (2006.01); A61F 2/40 (2006.01)
CPC (source: EP US)
A61F 2/30965 (2013.01 - EP US); A61F 2/3609 (2013.01 - EP US); A61F 2/3662 (2013.01 - EP US); A61F 2002/30217 (2013.01 - EP US); A61F 2002/30332 (2013.01 - EP US); A61F 2002/30474 (2013.01 - EP US); A61F 2002/30563 (2013.01 - EP US); A61F 2002/30914 (2013.01 - EP US); A61F 2002/30968 (2013.01 - EP US); A61F 2002/3611 (2013.01 - EP US); A61F 2002/365 (2013.01 - EP US); A61F 2002/4037 (2013.01 - EP US); A61F 2220/0025 (2013.01 - EP US); A61F 2220/0033 (2013.01 - EP US); A61F 2230/0067 (2013.01 - EP US); A61F 2310/00011 (2013.01 - EP US); A61F 2310/00023 (2013.01 - EP US); A61F 2310/00029 (2013.01 - EP US); A61F 2310/00059 (2013.01 - EP US); A61F 2310/00161 (2013.01 - EP US); A61F 2310/00203 (2013.01 - EP US)
Citation (search report)
See references of WO 0045748A1
Citation (examination)
GB 2126096 A 19840321 - MCKEE GEORGE KENNETH, et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DE 19904437 A1 20000810; AU 2289900 A 20000825; EP 1152717 A1 20011114; JP 2002536061 A 20021029; TW 510794 B 20021121; US 6607560 B1 20030819; WO 0045748 A1 20000810
DOCDB simple family (application)
DE 19904437 A 19990204; AU 2289900 A 20000113; EP 0000186 W 20000113; EP 00901537 A 20000113; JP 2000596872 A 20000113; TW 89101569 A 20000129; US 89070002 A 20020114