Plasma spray apparatus (1) for coating substrates (S), comprising at least a working chamber (3) including at least a plasma torch (21) and at least a substrate support (26) for the substrate (S) to be coated, in which an inert gas or a mixture of inert gases is contained at a pressure which is close to, or higher than, the normal pressure, and at least a gas circuit (2), in communication with said working chamber (3), comprising recirculating means (R) of the inert gases contained in said working chamber (3). The recirculating means (R) comprise a closed loop (L), including a blower (17) for recirculating the gases and a first heat exchanger (18) for cooling down the gases, communicating with said working chamber (3), suitable for extracting the inert gases from said working chamber (3) and supplying a first fraction of the cooled inert gases back into a first portion (3a) of said working chamber (3), and at least a path (P), communicating with said closed loop (L) and including a compressor (19) for compressing the gases and a second heat exchanger (20) for further cooling down the gases, suitable for supplying a second fraction of the cooled inert gases into a second portion (3b) of said working chamber (3), and pointed towards the substrate (S) by means of properly placed conduits (31a,31b).
B05B 7/22 - Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating the material to be sprayed electrically, e.g. by arc
METHOD FOR THE REALISATION OF A BIOCOMPATIBLE BONE IMPIANT COMPRISING GRANULAR ELEMENTS AND A BIOREABSORBABLE BIOPOLYMER GEL AND BIOCOMPATIBLE BONE IMPIANT THUS OBTAINED
Method for providing a biocompatible bone implant adapted to fill a bone cavity or lacuna comprising the steps of providing granular elements in form of granules and/or granule aggregates, providing at least one primary polymeric solution comprising a biopolymer, at least partly coating the granular elements with the primary polymeric solution, obtaining coated granular elements comprising a biopolymer coating, providing a cross-linking solution, dipping the coated granular elements in the cross-linking solution, waiting a period of time referred to as "jellification time" comprised between 30 seconds and 1 hour, in which during said waiting step there occurs the cross-linking of the biopolymer coating of the granular elements with the cross-linking solution and the jellification of the coating, with the aim of obtaining a cohesive biocompatible implant comprising granular elements and a bio-reabsorbable biopolymer gel; biocompatible bone implant obtained through such method.
A61L 24/00 - Surgical adhesives or cementsAdhesives for colostomy devices
3.
METHOD FOR THE REALISATION OF A BIOMATERIAL COMPRISING CALCIUM PHOSPHATE SHAPED AS GRANULES AND/OR THEIR AGGLOMERATES AND BIOMATERIAL OBTAINED WITH THIS METHOD
Method for the realization of a calcium phosphate-based biomaterial in form of granules (10, 20) and/or agglomerates (100, 200) of re-absorbable granules comprising the steps of providing at least one calcium phosphate-based ceramic powder, providing at least one aqueous solution comprising a natural polysaccharide dissolved in said aqueous solution, preparing at least one ceramic suspension obtained by mixing said ceramic powder in said aqueous solution, extruding the at least one ceramic suspension in a laminar flow, fragmenting the laminar flow of the at least one ceramic suspension into droplets by means of physical methods or through any other technology suitable for the purpose, immersing - by dropping - the droplets of ceramic solution into a cross-linking solution, maintaining the droplets in the cross-linking solution with ensuing consolidation and jellification of the droplets which assume a conformation of particles, washing the particles in water or any other liquid suitable for eliminating the excess of material and possible impurities, drying the particles through manual or automated separation thereof, so as to avoid the contact thereof, obtaining granules (10, 20) and/or agglomerates with automated or manual compaction of the particles, obtaining agglomerates (100, 200) of granules, wherein in the drying step a microporosity is formed made up by pores (12) of micrometric dimensions and/or a macroporosity (14) between one granule and another of the agglomerates (100, 200).
A61L 27/12 - Phosphorus-containing materials, e.g. apatite
A61L 27/46 - Composite materials, i.e. layered or containing one material dispersed in a matrix of the same or different material having a macromolecular matrix with phosphorus-containing inorganic fillers
A heat treatment method for pieces of stainless steel made with rapid prototyping techniques and the like having a crystal lattice having a mainly or completely austenitic structure, at room temperature, at the end of the rapid prototyping, characterised in that it comprises the steps of heating said piece to a predetermined temperature that is greater than the austenitizing temperature, for a predetermined time, so as to destabilize the austenitic microstructure of the piece, and cooling the piece, so as to obtain a crystal lattice with a mainly or completely martensitic structure.
A method for obtaining a composite material comprising an aqueous solution of pectin and a suspension/solution of calcium phosphate mixed together, wherein said solution of pectin cross-links with a portion of the calcium obtained from the solution of calcium phosphate and wherein a portion of the calcium phosphate in suspension remains as inorganic phase and composite materials obtained by this method.
A61L 24/00 - Surgical adhesives or cementsAdhesives for colostomy devices
A61L 27/46 - Composite materials, i.e. layered or containing one material dispersed in a matrix of the same or different material having a macromolecular matrix with phosphorus-containing inorganic fillers
6.
LASER PROCESS FOR PRODUCING METALLIC OBJECTS, AND OBJECT OBTAINED THEREFROM
Procedure for the manufacture of metal articles with laser, comprising the following phases: prepare at least a metal substrate (17); deposit on said substrate (17) at least a layer (18) of commercially pure zirconium or its alloys in the form of powder (7); cut said layer (18) with at least a laser beam (10) having a ratio between power and translation speed between 0.12 -0.20 W.s/mm.
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
B22F 7/00 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting
7.
PROCESS FOR COUPLING A POLYMERIC COMPONENT TO A METAL COMPONENT FORMING PART OF OR A BIOMEDICAL JOINT PROSTHESIS
A process for coupling a polymer component (44) to a metal component (40) forming part of a biomedical joint prosthesis, is described. The process comprises the steps of providing said polymer component, providing said metal component having a surface with the same geometry/curvature of the surface of the polymer component to be coated, putting in contact the polymer component with the metal component, heating only the metal component to a process temperature equal to or higher than the melting temperature of the polymer component to achieve a local softening or melting of the polymer component at the contact surface between said two components.
B29C 65/44 - Joining a heated non-plastics element to a plastics element
B22F 7/08 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
Process for depositing coatings on metal or non-metal pieces, comprising the phases of arranging at least a piece (3) on which to deposit the surface coating (4); arranging at least a plasma torch (2); igniting, said plasma torch (2); supplying the coating material (11) to said plasma torch (2); establishing an electric arc between said plasma torch (2) and said piece (3) during the coating deposit phase.
C23C 4/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
C23C 4/08 - Metallic material containing only metal elements
C23C 4/12 - Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
Process for depositing coatings (4; 104) on pieces (3;103), comprising the steps of providing at least one piece (3; 103) on which the surface coating (4; 104) is to be deposited, providing at least one plasma torch (2;102), switching ON said plasma torch (2;102), supplying, in said plasma torch (2;102), a coating material comprising at least two different powders (111, 120/111; 120, 124) separately injected into the plasma through two or more distinct respective pipes (110, 118,110,118, 123). The system comprises a plasma torch (102) suitable to deposit said coating (104) on said piece (103), and it is characterized in that it comprises at least two distinct pipes (110,118;110,118,123) for supplying at least two different coating powders (111,120;111;120,124) to said plasma torch (102).
B05B 7/22 - Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating the material to be sprayed electrically, e.g. by arc
H05H 1/42 - Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder or liquid
H05H 1/44 - Plasma torches using an arc using more than one torch
C23C 4/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
C23C 4/08 - Metallic material containing only metal elements
C23C 4/12 - Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
The method for coating prosthesis elements (P) that have a concave surface (7; 107; 207; 307; 407; 507; 607; 707; 807) and a corresponding convex counter surface (8; 108; 208; 308; 408; 508; 608; 708; 808), comprises: arranging in at least said concave surface shaped gripping means (R) for gripping coating means (9); coupling coating means (9) with said shaped gripping means (R), said coupling comprising coating said concave surface (7; 107; 207; 307; 407; 507; 607; 707; 807) with said coating means (9) temporarily being in a mouldable state obtaining moulded coating means (9); making said moulded coating means (9) solidify and adhere firmly to said shaped gripping means (R).
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29C 70/78 - Moulding material on one side only of the preformed part
B29C 37/00 - Component parts, details, accessories or auxiliary operations, not covered by group or
The covering method suitable for covering surfaces of a shaped body comprises the following phases: placing an electrolytic solution containing protein material in an electrochemical cell; producing a difference in potential between electrodes of the electrochemical cell generating a flow of protein material towards at least one of the electrodes; placing the shaped body in the electrochemical cell in such a way that the flow touches the surfaces covering them with the protein material, wherein the protein material comprises fibroin.
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