Implant comprising a calcium salt-containing composite powder having microstructured particles

• Main Authors: Luger, Siegmund, Vucak, Marijan, Reinauer, Frank
• Format: Patent
• Language: English
• Published: 18.10.2022
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; ADHESIVES; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; CORRECTING FLUIDS; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; DYES; FILLING PASTES; HUMAN NECESSITIES; HYGIENE; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; INKS; INORGANIC CHEMISTRY; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METALLURGY; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PREPARATION OF CARBON BLACK; TRANSPORTING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Implant comprising composite powder with microstructured particles, obtained by a process in which large particles are bonded to small particles, whereinthe large particles have a mean particle diameter in the range from 10 μm to 10 mm,the large particles comprise at least one polymer,the small particles are arranged on the surface of the large particles and/or are non-homogeneously spread within the large particles,the small particles comprise a calcium salt,the small particles have a mean particle size in the range from 0.01 μm to 1.0 mm,wherein the particles of the composite powder have a mean particle size d50 in the range from 10 μm to less than 200 μm and the fine fraction of the composite powder is less than 50 vol %.Therefore, the subject matter of the invention further are implants obtained by selective laser sintering of a composition comprising a composite powder, especially as an implant for applications in the field of neuro, oral, maxillary, facial, ear, nose and throat surgery as well as of hand, foot, thorax, costal and shoulder surgery.