WEAR-REDUCING RING FOR ARTICULATIONS IN TOTAL JOINT REPLACEMENTS
摘要
The articulating joint prostheses of the invention demonstrate reduced wear and can include a cup(101) formed of UHMWPE. An insert (150) of a hard material, such as metal, ceramic or cross-linked UHMWPE is positioned within the cup at a location of the contact between the cup and head (102). The shape of either component of the kinematic pair may be modified so as to result in an annular surface contact between the two components, with the insert positioned at the annular surface contact. Fluid trapped between the two components within the inner contour of the annular contact area is pressurized under load due to elastic deformation of the components and exuded out through an inter-articular gap over the surface of contact of the insert. This aids lubrication and reduces wear.
申请公布号
WO2013030668(A1)
申请公布日期
2013.03.07
申请号
WO2012IB01974
申请日期
2012.08.31
申请人
SCYON ORTHOPAEDICS AG;TEPIC, SLOBODAN;BRESINA, STEPHEN, J.