HYDROXYLAPATITE GEL

The invention relates to a hydroxylapatite gel obtained through a sol-gel process, in which an alkaline aqueous solution of a calcium slat is reacted with an alkaline aqueous solution of a phosphate salt in a calcium and phosphorus molar ratio in the range of 1.67 to obtain a sol. The sol in then tr...

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Bibliographische Detailangaben
Hauptverfasser:	ANDREEV, ANDREY IVANOV, JORDANOVA, MAGARITA NIKOLOVA, IVANOV, EMIL STOIMENOV, DJEROV, DIMITAR ASSENOV, VELICHKOVA, VELITCHKA ALEXANDROVA, BAUMANN, ARNULF, TCHAKALSKI, KIRIL RANGUELOV, KIROV, GUEORGUI NIKOLOV, DRAMOV, SAVA ASSENOV
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARTIFICIAL STONE BANDAGES, DRESSINGS OR ABSORBENT PADS CEMENTS CERAMICS CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE INORGANIC CHEMISTRY LIME, MAGNESIA MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL NON-METALLIC ELEMENTS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES REFRACTORIES SLAG TREATMENT OF NATURAL STONE TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	The invention relates to a hydroxylapatite gel obtained through a sol-gel process, in which an alkaline aqueous solution of a calcium slat is reacted with an alkaline aqueous solution of a phosphate salt in a calcium and phosphorus molar ratio in the range of 1.67 to obtain a sol. The sol in then transformed into a gel by hydrothermal treatment. The hydroxylapatite gel thus obtained exhibits excellent properties for use as a binding agent in moldable hydroxylapatite materials, comprising a granular filling material containing calcium in addition to the gel. The filling material is also preferably a hydroxylapatite material. Shaped bodies can be obtained from the hydroxylapatite material, which are most suitable for use in bone surgery and as filtering materials. The invention further relates to a metal implant comprising a coating of the inventive hydroxylapatite material. The invention also concerns a method for producing the hydroxylapatite gel, the shaped bodies and the coated metal implant.