Porous ceramic material and processes for preparing same

A porous ceramic material composed of a sintered porous body of a calcium phosphate compound is described. A multiplicity of capillary void paths having a diameter of 1 to 30 mu m and a multiplicity of pores having a diameter of 1 to 600 mu m are formed in the sintered porous body. At least part of...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAUCHI, SHIGERU, TAKAGI, SHIGEHIDE
Format:	Patent
Sprache:	eng
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 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 LIME, MAGNESIA MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES PROSTHESES REFRACTORIES SLAG TREATMENT OF NATURAL STONE TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	A porous ceramic material composed of a sintered porous body of a calcium phosphate compound is described. A multiplicity of capillary void paths having a diameter of 1 to 30 mu m and a multiplicity of pores having a diameter of 1 to 600 mu m are formed in the sintered porous body. At least part of the pores are connected to the exterior space of the sintered porous body through at least a part of the capillary voids. The porous ceramic material is valuable as a medical material, e.g., a substitute or prosthesis for bone or dental root, and also an electronic material and a genetic engineering material. When the porous ceramic material is embedded in a bone defect of human or animals, osteolytic cells, osteoblasts, erythrocytes and body fluid are selectively allowed to intrude through the porous ceramic material while almost no intrusion of osteoclasts and collagen fibers is allowed. Accordingly, the porous ceramic material can be utilized for inducing new-born bone, controlling resorption of bone with age, remedying bone defects.