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 medical device generally includes a structural member having a surface wherein at least a portion of the surface is coated with a nanostructured material to a thickness of at least about 25 micrometers, and wherein the nanostructured material comprises a ceramic, ceramic composite, ceramic metal composite, or a combination comprising at least one of the foregoing. The implants have increased service lifetimes owing in part to improved wear and abrasion resistance, and may be useful for partial or full replacement of articulating and flexible hinge joints.
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:
An implant comprises a substrate and a coating on a surface of the substrate, and the coating comprises silicon nitride and has a thickness of from about 1 to about 15 micrometer. A method of providing the implant comprises coating a surface of the implant substrate with the coating comprising silicon nitride and having a thickness of from about 1 to about 15 micrometer by physical vapor deposition.
摘要:
A medical device generally includes a structural member having a surface wherein at least a portion of the surface is coated with a nanostructured material to a thickness of at least about 25 micrometers, and wherein the nanostructured material comprises a ceramic, ceramic composite, ceramic metal composite, or a combination comprising at least one of the foregoing. The implants have increased service lifetimes owing in part to improved wear and abrasion resistance, and may be useful for partial or full replacement of articulating and flexible hinge joints.