Tissue augmentation material and methods

A - Human Necessities – 61 – L

Patent

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Details

A61L 27/46 (2006.01) A61L 27/50 (2006.01)

Patent

CA 2380932

A permanent, biocompatible material for soft tissue augmentation. The biocompatible material comprises a matrix of smooth, round, finely divided, substantially spherical particles of a biocompatible ceramic material, close to or in contact with each other, which provide a scaffold or lattice for autogenous, three dimensional, randomly oriented, non-scar soft tissue growth at the augmentation site. The augmentation material can be homogeneously suspended in a biocompatible, resorbable lubricious gel carrier comprising a polysaccharide. This serves to improve the delivery of the augmentation material by injection to the tissue site where augmentation is desired. The augmentation material is especially suitable for urethral sphincter augmentation, for treatment of incontinence, for filling soft tissue voids, for creating soft tissue blebs, for the treatment of unilateral vocal cord paralysis, and for mammary implants. It can be injected intradermally, subcutaneously or can be implanted.

L'invention porte sur un matériau biocompatible, permanent, utilisé dans l'augmentation des tissus mous. Un matériau biocompatible céramique comprend une matrice de particules sphériques, finement divisées, rondes, lisses, rapprochées ou en contact les unes avec les autres, et qui forment un squelette ou réseau pour la prolifération des tissus mous, sans cicatrice, orientés de manière aléatoire, tridimensionnels, autogènes, au niveau du site d'augmentation. Le matériau utilisé pour l'augmentation peut être en suspension de manière homogène dans un support de gel lubrifiant, apte à se résorber, biocompatible, comprenant un polysaccharide. Ceci facilite l'injection du matériau dans le site tissulaire que l'on souhaite augmenter. Ce matériau est notamment utilisé pour l'augmentation du sphincter externe de l'urètre, dans le traitement de l'incontinence, le remplissage des vides des tissus mous, la formation de bulles dans les tissus mous, dans le traitement de la paralysie unilatérale des cordes vocales et dans les implants mammaires. Ce matériau peut être injecté par voie intradermique, sous-cutanée ou peut être implanté.

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