MOLDING AND MOLDING METHOD FOR DETERMING SEMI-QUANTITATIVE DENSITY OF BONE, BONE SUBSTITUTION MATERIAL AND BONE IMPLANT

• Main Authors: LE GALL MICHEL, DARD MICHEL DR
• Format: Patent
• Language: English
• Published: 16.11.1999
• Edition: 6
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; CALCULATING; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; COMPUTING; COUNTING; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; DIAGNOSIS; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEASURING; MEDICAL OR VETERINARY SCIENCE; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PHYSICS; PROSTHESES; SURGERY; TESTING; TREATMENT OR PROTECTION OF EYES OR EARS

PROBLEM TO BE SOLVED: To ensure an easy determination of semi-quantitative density of each element such as bone, bone substitution material or bone implant having at least two parallel planes by using materials having a different density, in a molding for the determination of the quantitative density of element. SOLUTION: This molding is formed by use of there or more materials having at least two parallel planes and a different density. By use of the molding, variation of bone density over a certain period can be accurately determined by the aid of radioactive rays. Namely, any variation in a radiation image caused by a physiochemical characteristic can be detected surely. As a result, incorrect and erroneous determination can be avoided. Preferably, the molding includes two or more pairs having the side length of 2-20 mm, and formed of three materials, that is, the material whose density is not less than 4.5 g/cm (high density), the material whose density is 0.4-4.5 g/cm (medium density), and the material whose density is not more than 0.4 g/cm .