Abstract:
A bone cement comprising an acrylic polymeric component and an inorganic component comprising a bioactive glass or glass-ceramic, comprising at least one metal oxide having an anti-bacterial activity, wherein said glass or glass-ceramic component is adapted to release ions of said metal in contact with physiological fluids. The bone cement performs a sustained antibacterial action, also promoting binding with the tissues with which it is contacted, and it is advantageously employed in the fixation of orthopaedic prostheses, in the production of temporary prostheses and in spinal surgery.
Abstract:
A method for conferring antibacterial property to a substrate, characterised in that it comprises the coating of said substrate with a film comprising a glass, ceramic, or glass-ceramic material, and a metal having antibacterial properties, by radio-frequency co-sputtering.
Abstract:
The present invention relates to the production of biocompatible magnetic materials for cancer therapy by means of hyperthermia. These materials are constituted by a biocompatible vitreous matrix in which there is dispersed a magnetic crystalline phase. The magnetic materials of the invention may be obtained with three different methodologies: coprecipitation, melting, and sintering.
Abstract:
A bone cement comprising an acrylic polymeric component and an inorganic component comprising a bioactive glass or glass-ceramic, comprising at least one metal oxide having an anti-bacterial activity, wherein said glass or glass-ceramic component is adapted to release ions of said metal in contact with physiological fluids. The bone cement performs a sustained antibacterial action, also promoting binding with the tissues with which it is contacted, and it is advantageously employed in the fixation of orthopaedic prostheses, in the production of temporary prostheses and in spinal surgery.
Abstract:
A method for conferring antibacterial property to a substrate, characterised in that it comprises the coating of said substrate with a film comprising a glass, ceramic, or glass-ceramic material, and a metal having antibacterial properties, by radio-frequency co-sputtering.
Abstract:
Single-piece prosthesis elements chosen from among acetabular cup for hip prosthesis, tibial component and femoral component for knee prosthesis, comprising a body (2) of ceramic material or ceramic matrix composite material, a bioactive porous coating (4) of glass material, glass-ceramic material or glass-ceramic matrix material applied to the surface of said body intended for anchoring with the bone tissue, where said bioactive porous coating (4) is anchored to the body surface (2) by means of a glass or glass-ceramic phase layer.
Abstract:
The object of the invention are prosthetic devices or implants, that can release in the implant site silver ions, thus providing an antibacterial and non-cytotoxic action, and a process to prepare them. The preparation process consists in the operation of subjecting the device, which is constituted by at least a surface layer or a part of a glass, ceramic or glass-ceramic material, containing metals' ions exchangeable with silver ions, to a silver ions containing aqueous solution ion-exchange process.
Abstract:
The process for the preparation of a prosthetic device or a medical implant comprising titanium or titanium alloy, through a surface modification treatment in order to make bioactive the surface of titanium or titanium alloy, comprising the steps of: a) an acid attack for the removal of native oxide present on said the surface; and b) surface controlled oxidation in an hydrogen peroxide solution in order to expose hydroxyl groups bound on the surface; the so obtained surface, bioactive from the inorganic point of view, could be further modified in order to make it bioactive also from the biological point of view by functionalization of the surface with proteins from extracellular matrix or enzymes. This process includes surface activation with trifluoroethanesulfonyl chloride and subsequent incubation of the activated surface into a solution of the biomolecule in order to obtain a covalent grafting.
Abstract:
Single-piece prosthesis elements chosen from among acetabular cup for hip prosthesis, tibial component and femoral component for knee prosthesis, comprising a body (2) of ceramic material or ceramic matrix composite material, a bioactive porous coating (4) of glass material, glass-ceramic material or glass-ceramic matrix material applied to the surface of said body intended for anchoring with the bone tissue, where said bioactive porous coating (4) is anchored to the body surface (2) by means of a glass or glass-ceramic phase layer.
Abstract:
An injectable composition for bone filling or consolidation, for use in surgery or therapy, characterized in that it comprises a biocompatible powdery material, which is hardenable or cross-linkable and selected from calcium sulphate hemi-hydrate and polymethylmethacrylate, a hardening or cross-linking agent for said material and a porous silica-based powdery material, having a specific surface area higher than 100 m 2 /g, which comprises a mesoporous bioactive glass, obtainable/achievable by a sol-gel method with the addition of a surfactant as structure-directing agent for pores formation, comprising an oxide mixture containing: SiO 2 : from 60 to 85% by moles CaO: from 10 to 30% by moles P 2 O 5 : from 2 to 10% by moles said composition, when applied to an affected area of a patient, being adapted to form a composite material wherein said hardenable or cross-linkable material constitutes a matrix and said mesoporous bioactive glass constitutes a dispersed phase in said matrix.