Composite materials based on polysilicic acid and method for...

A - Human Necessities – 61 – L

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A61L 27/30 (2006.01) A61L 27/32 (2006.01) A61L 27/44 (2006.01) A61L 27/46 (2006.01)

Patent

CA 2555166

The invention relates to composite materials based on polysilicic acid, said materials containing novel compositions which have improved material properties and can be in the form of dispersions, pastes, powders, granulated materials, layers or compact moulded bodies. The aim of the invention is to produce composite materials based on polysilicic acid with improved mechanical properties. To this end, the composite materials contain polysilicic acid, between 0.01 and 20 mass % of an organic polymer, more than 15 mass % of at least one calcium phosphate phase, and optionally a use-specific additive. The material produced according to the invention can be implanted or injected. The composition of the composite material with the resulting properties enables the composite material to be used for bone substitution and/or bone regeneration in both human medicine and animal medicine. The inventive material can also be used to heal wounds.

L'invention concerne des matériaux composites à base d'acide polysilicique contenant de nouvelles compositions à propriétés améliorées et pouvant se présenter sous forme de dispersions, pâtes, poudres, granulés, couches ou corps moulés compacts. L'invention a pour but de produire des matériaux composites à base d'acide polysilicique, dotés de propriétés mécaniques améliorées et, à cet effet, est caractérisée en ce que les matériaux composites à base d'acide polysilicique renferment un polymère organique, à raison de 0,01 à 20 % en masse, au moins une phase phosphate de calcium, à raison de plus de 15 % en masse et, éventuellement, un additif spécifique pour l'utilisation. Le matériau fabriqué conformément à l'invention est implantable ou injectable. La composition du matériau composite doté des propriétés qui en résultent permet l'utilisation de celui-ci pour la substitution osseuse et/ou la régénération osseuse dans des applications en médecine humaine et vétérinaire. En outre, ce matériau peut être utilisé pour la guérison de blessures.

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