摘要:
A method of fabricating a medical implant component. The method may include the steps of producing a substrate from a first material wherein the substrate has a bearing portion, spraying particles of a second material onto the bearing portion in accordance with a predetermined spraying technique to provide a coating thereon, and subjecting the coated bearing portion to a hot isostatic pressing process, a vacuum sintering process, or a controlled atmospheric sintering process. The first material may be the same as or different from the second material. The predetermined spraying technique may be a thermal type spraying process such as a plasma spraying process or a high velocity oxygen fuel spraying process.
摘要:
A prosthesis 2 comprises a first component 10 and a second component 14, the first component 10 being adapted to articulate with the second component 14 and being formed from a ceramic material, and the second component 14 being formed from a metallic material, wherein at least a portion of a surface 16 of the second component 14 comprises a ceramic material.
摘要:
Biocompatible medical implants from a high strength titanium alloy with low elastic modulus containing titanium, about 10-20 wt% or 35 to about 50 wt% niobium and up to 20 wt% zirconium. In particular, the titanium alloy has a modulus of elasticity closer to that of bone than other typically used metal alloys and does not include any elements which have been shown or suggested as having short or long term potential adverse effects from a standpoint of biocompatibility.
摘要:
The invention relates to a method for precipitating mono or multiple layers of organophosphosphoric acids of general formula (I(A)) Y-B-OPO3 H2 (IA) or organophosphonic acids of general formula (I(B)) Y-B-PO3 H2 (IB) and the salts thereof, wherein B is an alkyl, alkenyl, alkinyl, aryl, aralkyl, hetaryl or hetaryl alkyl radical and Y is hydrogen or a functional group from the hydroxy, carboxy, amino, optionally low-alkyl- substituted mono or dialkylamino series, thiol, or a negative acid group from the ester, phosphate, phosphonate, sulphate, sulphonate, maleimide, succinimydyl, epoxy, acrylate series. A biological, biochemical or synthetic indicator element can be coupled to B or Y as addition or substitution reaction, whereby compounds can also be added imparting on the substrate surface a resistance against protein absorption and/or cell adhesion and in the B chain can be, optionally, composed of one or more ethylene oxide groups rather than one or more CH2 groups. According to the invention, said precipitation occurs on the surfaces of the substrates of pure or mixed oxides, nitrides or carbides of metals and semi-conductors. The invention is characterised in that the water-soluble salts composed of formula (IA) or (IB) are used to treat said surfaces, especially the surfaces of sensor platforms, implants and medical accessory devices.
摘要:
A biocompatible titanium alloy with low elastic modulus containing titanium, about 10-20 wt.% or 35 to about 50 wt.% niobium and upto 20 wt.% zirconium useful for fabricating of orthopaedic implants. This invention relates generally to high strength, biocompatible alloys suitable for use as a material for a medical prosthetic implant and, in particular, a titanium ally which has a relatively low modulus of elasticity (eg. closer to that of bone than other typically-used metal alloys) and does not include any elements which have been shown or suggested as having short term or long term potential adverse effect from a standpoint of biocompatibility.
摘要:
Substrates for joints for orthopaedic implants are described, wherein at least one of the sliding surfaces of non-ferrous metal alloys, in particular of cobalt, chromium, molybdenum alloys, has a coating consisting of niobium nitride nanolayers alternating with chromium nitride nanolayers, the lot being protected by a chromium nitride microlayer.