EP 1150625 A1 20011107 - HIP SOCKET PROSTHESIS WITH A COUPLING ELEMENT BETWEEN THE SOCKET HOUSING AND THE SOCKET INSERT
Title (en)
HIP SOCKET PROSTHESIS WITH A COUPLING ELEMENT BETWEEN THE SOCKET HOUSING AND THE SOCKET INSERT
Title (de)
HÜFTGELENKPFANNE MIT KOPPLUNGSELEMENT ZWISCHEN PFANNENGEHÄUSE UND PFANNENEINSATZ
Title (fr)
COTYLE AVEC ELEMENT D'ACCOUPLEMENT ENTRE LA COQUILLE COTYLOIDIENNE ET L'INSERT COTYLOIDIEN
Publication
Application
Priority
- DE 19904436 A 19990204
- EP 0000195 W 20000113
Abstract (en)
[origin: DE19904436A1] The invention relates to hip socket prostheses which consist of a socket housing and a ceramic socket insert which can be introduced into the socket housing. The joint surfaces of the two components have to be processed exactly since imprecision can lead to uneven concentrations of stress in the socket inserts, which in turn can lower the resistance of the component. Operation-related contamination can also impair the durability of the clamped joint. For this reason, elements for homogenising the transmission of force are arranged between the ceramic socket insert and the metal socket housing. A known solution is a layer of plastic, especially polyethylene. However, a polyethylene coupling element has the disadvantage of not being cold flow-resistant. Relative movements between the coupling element and the socket housing can also occur, which can cause friction wear. According to the invention, the elasticity and damping properties of the coupling element (5) between the socket housing (2) and the socket insert (3) of the hip joint prosthesis (1) can be predetermined by its porosity and the structure of its surface.
IPC 1-7
IPC 8 full level
A61F 2/30 (2006.01); A61F 2/34 (2006.01); A61F 2/00 (2006.01)
CPC (source: EP)
A61F 2/30965 (2013.01); A61F 2/34 (2013.01); A61F 2002/30563 (2013.01); A61F 2002/30914 (2013.01); A61F 2002/30915 (2013.01); A61F 2002/30968 (2013.01); A61F 2002/3448 (2013.01); A61F 2310/00011 (2013.01); A61F 2310/00023 (2013.01); A61F 2310/00029 (2013.01); A61F 2310/00059 (2013.01); A61F 2310/00161 (2013.01); A61F 2310/00179 (2013.01)
Citation (search report)
See references of WO 0045749A1
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 19904436 A1 20000810; AU 2290100 A 20000825; EP 1150625 A1 20011107; JP 2002536062 A 20021029; TW 412418 B 20001121; WO 0045749 A1 20000810
DOCDB simple family (application)
DE 19904436 A 19990204; AU 2290100 A 20000113; EP 0000195 W 20000113; EP 00901540 A 20000113; JP 2000596873 A 20000113; TW 89100962 A 20000121