Abstract: The present invention relates to an acetabular cup for receiving a substantially spherical hip joint prosthesis head having an outer surface, the cup including: (a) a ceramic component having a socket surface shaped to rotatably receive the outer surface of the head, and (b) a metal backing in which the ceramic component is received, wherein the ceramic component comprises zirconia-toughened alumina, and wherein the ceramic component is interference fit within the metal backing.

Abstract: A biomedical component comprising sintered yttria tetragonal zirconia ceramic (YTZP), the YTZP comprising at least 90 mol % ZrO2, the ZrO2 being partially stabilized with at least 2.1 mol % yttria, wherein the YTZP further comprises between 0.05 wt % and 1 wt % alumina, wherein the YTZP has a density of at least 99% of theoretical density and has a grain size, as measured by the linear intercept method, of no more than 1 micron, and wherein the yttria is homogeneously distributed within the zirconia.

Abstract: This invention relates to a biojoint prosthesis comprising:

Abstract: A biomedical component comprising zirconia toughened alumina (ZTA), the ZTA comprising 1-69 wt % ZrO2, the ZrO2 being partially stabilized with >2.

Abstract: The invention relates to a ceramic hip joint prosthesis head for use with a trunnion, the trunnion having a frustoconical end comprising a first section having a diameter of about 12 mm which expands inward at a total angle of about 6 degrees to form a second section having a diameter of about 14 mm, wherein each head comprises:a) a substantially spherical outer diameter of about 22.

Abstract: This invention relates to a biojoint prosthesis comprising:a) a prosthetic comprising a first component having an outer surface comprising at least 90 mol% zirconia, andb) a second component having a surface shaped to receive the outer surface of the first component,wherein the outer surface of the first component is received on the surface of the second component, andwherein a) at least a portion of the surface of the second component receiving the first component comprises a ceramic having a surface roughness of no more than 100 nm, and b) the outer surface of the first component has a surface roughness of no more than 100 nm.

Abstract: An amorphous cationic conductor of lithium comprising a composition corresponding to the general formula:{B.sub.2 O.sub.3, xM, yN} , aLi.sub.2 O, bLi.sub.z Q 11in which:M is chosen from the group formed by:Al.sub.2 O.sub.3, V.sub.2 O.sub.5, P.sub.2 O.sub.5, As.sub.2 O.sub.5 As.sub.2 O.sub.3 ;N is chosen from the group formed by:SiO.sub.2 and GeO.sub.2 ;Q is chosen from the group formed by halogen anions and bi- or tri-valent mono- or poly-atomic anions exclusive of O.sup.2- ;O.ltoreq.x.ltoreq.0.35;O.ltoreq.y.ltoreq.0.8;O<a.ltoreq.2;O<b<1.5;b.ltoreq.2a; andz=1 or 2 or 3 according to whether Q is mono-, bi- or tri-valent.