Bioartificial implant and its use and method of reducing the...

A - Human Necessities – 61 – L

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A61L 27/50 (2006.01) A61F 2/02 (2006.01) C12N 11/02 (2006.01)

Patent

CA 2539150

A bioartificial implant comprises a semipermeable barrier designed from one side to allow diffusion or prevent diffusion of predetermined substances/materials/molecules/cells/cell lines produced in the human body to the other opposite side of the barrier, and from said other opposite side to allow diffusion or prevent diffusion of predetermined substances which are the same as or different from the first mentioned substances/materials/molecules/cells/cell lines. The semipermeable barrier has a surface coating at least on said one side a bioactive metal, such as titanium, which surface coating is permeable to allow said diffusions. In a method for reducing the risk of formation/growth of connective tissue in connection with an implant which comprises a semipermeable barrier, the barrier is provided at least on one side with a permeable coating of bioactive metal. An example of the use of the implant is bioartificial pancreas.

L'invention concerne un implant bioartificiel comprenant une barrière semi-perméable conçue, d'un côté de la barrière, pour permettre la diffusion ou pour empêcher la diffusion de substances/matières/molécules/cellules/lignées cellulaires prédéterminées produites dans le corps humain, vers le côté opposé de la barrière ; et dudit côté opposé, pour permettre la diffusion ou pour éviter la diffusion de substances prédéterminées qui sont identiques ou différentes des premières substances/matières/molécules/cellules/lignées cellulaires susmentionnées. La barrière semi-perméable présente un revêtement de surface sur au moins un côté d'un métal bioactif, notamment du titane, ce revêtement de surface est perméable pour permettre lesdites diffusions. Dans une méthode pour réduire le risque de formation/croissance de tissu conjonctif associé à un implant comprenant une barrière semi-perméable, la barrière est dotée, au moins sur un côté, d'un revêtement perméable en métal bioactif. Un exemple d'application de l'implant de l'invention est son utilisation en tant que pancréas bioartificiel.

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