Abstract:
A surface-modified implant comprising a plurality of nanotubes and a process for preparing the surface-modified implant. The metal-containing surface of the implant is modified using an electrochemical anodization process to create a plurality of nanotubes formed of an oxide of the metal on at least a surface of the implant.
Abstract:
A n orthopedic implant with a diffusion-hardened surface on non-load bearing areas of the implant for interaction with non-load bearing surfaces of a polymeric bio-compatible material, such as UHMWPE (ultra-high molecular weight polyethylene). The orthopedic implant is a mobile-bearing knee prosthetic and system where a coating of oxidized zirconium is formed on the post of the tibial tray of the prosthetic for interaction with an opening of a polymeric tibial insert. The diffusion-hardened surface of the orthopedic implant provides a strengthened post and reduction in wear in the opening of the polymeric insert.
Abstract:
An orthopedic implant (50) with a diffusion-hardened surface on non-load bearing areas (54, 55, 56) of the implant for interaction with non-load bearing surfaces of a polymeric bio-compatible material, such as UHMWPE. The orthopedic implant is a posterior stabilized knee prosthetic and system where a coating of oxidized zirconium is formed on the cam of the femoral prosthetic for interaction with the central post of a polymeric tibial insert. The diffusion-hardened surface of the orthopedic implant provides a strengthened cam and reduction in wear in the central post of the polymeric tibial insert.
Abstract:
The invention relates to a mechanical piece having a structure comprising a substrate (1) and at least one surface coating layer (3) of nanometric thickness, for improving mechanical resistance, characterized in that it comprises between the substrate and the surface coating layer an essentially non ceramic, non porous adhesion layer of nanometric size; and said surface coating layer is an essentially non porous barrier layer (2) consisting essentially of an essentially stoechiometric titanium nitride layer.
Abstract:
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. The invention also relates to the use thereof as part of coated sensor platforms, implants and medical accessory devices in addition to novel organophosphosphoric acids and organophosphonic acids themselves. The optionally substituted compounds of general formula (IA) and (IB), wherein the groups B and Y have the above mentioned designations i.e. optionally substituted alkyl, alkenyl, alkinyl, aryl, aralkyl, hetaryl or hetaryl, are equally called organophosphoric acids or phosphonic acids.
Abstract translation:本发明涉及一种用于通式有机膦酸的单 - 或多层的分离的方法(IA):YB-OPO 3 H 2,或通式(IB)的有机膦酸:YB-PO 3 H 2和它的盐,其中B为烷基, 烯基,炔基,芳基,芳烷基,杂芳基或杂芳基烷基残基,Y是从系列氢或选自羟基,羧基,氨基,任选地被低级烷基取代的官能团,单或二烷基氨基,巯基,或负的酸基团 酯,是磷酸酯,膦酸酯,硫酸酯,磺酸酯,马来酰亚胺,琥珀酰亚胺,环氧,丙烯酸酯,其中,通过加成或取代反应的生物,生化或合成的识别元件可以停靠到B或Y,其中,化合物也可附着于衬底表面 在链中赋予对蛋白吸附和/或细胞粘附性和在B的任选取代的一个或米 ehrerer -CH 2个基团,一个或多个环氧乙烷基团可以包含上的金属和半导体的纯的或混合的氧化物,氮化物或碳化物,其特征在于在基板表面,其水溶性为这些表面的处理,特别是作为传感器平台,植入物和医疗附件装置的表面, 可以使用的式(IA)或(IB)的化合物的盐。 此外,本发明,其作为涂布传感器平台,植入物和医疗附件设备以及新和有机膦-膦酸部分的使用影响那里。 式的任选取代的化合物(IA)和(IB)其中基团B和Y有上述含义,即 一起为任选取代的烷基,烯基,炔基,芳基,芳烷基,杂芳基或杂芳基,要采取以下一起-也是标号有机膦酸或膦酸下。
Abstract:
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.
Abstract translation:本发明涉及一种用于单或通式的有机膦酸多层的分离的方法I(A):YB-OPO 3 H 2(IA)或通式I(B)YB-PO 3 H 2(IB)的有机膦酸和其盐,其中 B是烷基,烯基,炔基,芳基,芳烷基,杂芳基或杂芳基烷基残基,Y是氢或选自羟基,羧基,氨基,任选地被低级烷基取代的官能团,单或二烷基氨基,巯基,或 从酯,磷酸酯,膦酸酯,硫酸酯,磺酸酯,马来酰亚胺,琥珀酰亚胺,环氧,丙烯酸酯的装置,其特征在于,通过加成或取代反应的生物,生化或合成的识别元件可以停靠到B或Y,由此化合物附着负酸基 可赋予基材表面至蛋白吸附和/或细胞粘附和在乙在链中任选地电阻,而不是一个 或多个-CH 2基团,一个或多个环氧乙烷基团可以包含上的金属和半导体的纯的或混合的氧化物,氮化物或碳化物,其特征在于对这些表面的处理,特别是作为传感器平台,植入物和医疗附件装置表面的衬底表面, 可以使用的式(IA)或(IB)的化合物的水溶性盐。
Abstract:
A surface-modified implant comprising a plurality of nanotubes and a process for preparing the surface-modified implant. The metal-containing surface of the implant is modified using an electrochemical anodization process to create a plurality of nanotubes formed of an oxide of the metal on at least a surface of the implant.
Abstract:
An orthopedic implant (40) having diffusion-hardened surfaces employed at inner and outer load-bearing surfaces. Preferably, the orthopedic implant is a bipolar hip prosthetic device and system where a coating of oxidized zirconium is formed at the articulating, load-bearing surface of the acetabular component (41) and at the articulating, load-bearing surface of the femoral head (43). The acetabular component has a polymeric cup (42), made from a bio-compatible material, such as UHMWPE.
Abstract:
A dental or orthopaedic implant comprises a metal or metal alloy whose surface has been converted at least over part of its area to an oxide film X, the oxide film comprising a calcium phosphate-containing material as a composite component over at least part of its area Y. The metal or metal alloy preferably comprises a Group IIIA or IVA transition metal or alloy containing the same, and more preferably comprises titanium. The metal or metal alloy surface of the implant is preferably oxidised and/or the composite is preferably formed by Plasma Electrolytic Oxidation. The calcium phosphate- containing material preferably comprises an apatite, for example hydroxylapatite, or tricalcium phosphate. In a preferred PEO process, high frequency current pulses of a particular form, and within a particular frequency range, are used, combined with the generation of acoustic vibrations in 20 a sonic frequency range in the electrolyte, the frequency ranges of the current pulses and the acoustic vibrations overlapping.