A method for the production of a biologically active...

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/28 (2006.01) A61L 27/12 (2006.01) A61L 27/56 (2006.01) B29C 67/00 (2006.01) C04B 35/447 (2006.01)

Patent

CA 2561727

The invention relates to a method for the production of a biologically active prosthetic device for the reconstruction of bone tissue comprising the steps of: a CAT (Computerized Axial Tomography) scan of the patient and obtaining a three-dimentional electronic model (1) of the part of the bone and of a bone defect (2) to be reconstructed; production by prototyping of a prototype resin model (3) of the area of the patient's bone involved, forming of a model (4), of the patient's bone defect to be reconstructed; construction of a netative mould (5), production of a ready sintered ceramic semi-finished product with controlled and interconnected porosity, said semi-finished product being made with dimensions and shape slightly larger than the bone defect; mechanical processing and manual finishing of the sintered semi-finished product, to obtain the precise dimensions and shape of the bone defect, the invention also relating to the prosthetic device obtained using the method described above.

L'invention concerne un procédé permettant de produire un dispositif prothétique biologiquement actif destiné à la reconstruction de tissu osseux comprenant un balayage tomographique axial informatisé (CAT) du patient et l'obtention d'un modèle électronique tridimensionnel (1) de la partie osseuse et d'un défaut osseux (2) à reconstruire; la production par prototypage d'un modèle en résine prototype (3) de la zone osseuse du patient concerné, et formage d'un modèle (4) du défaut osseux du patient à reconstruire; la construction d'un moule négatif (5), la production d'un produit semi-fini céramique fritté prêt à porosité contrôlée et interconnectée, ledit produit semi-fini ayant des dimensions et une forme légèrement plus grandes que celles du défaut osseux; le traitement mécanique et la finition manuelle du produit semi-fini fritté, pour obtenir les dimensions et la forme précises du défaut osseux. L'invention concerne enfin le dispositif prothétique réalisé par ledit procédé.

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