Retrievable bioartificial implants

A - Human Necessities – 61 – L

Patent

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A61L 27/00 (2006.01) A61F 2/02 (2006.01) A61K 9/00 (2006.01) A61K 35/39 (2006.01) A61L 27/20 (2006.01) A61L 27/38 (2006.01) A61L 27/40 (2006.01) A61L 27/52 (2006.01) A61L 27/54 (2006.01) A61P 3/10 (2006.01)

Patent

CA 2234233

Bioartificial implant and methods for their manufacture and use are described, particularly bioartificial pancreases. In particular, the implants may be thin sheets which enclose cells, may be completely biocompatible over extended periods of time and may not induce fibrosis. The high-density-cell-containing thin sheets are preferably completely retrievable, and have dimensions allowing maintenance of optimal tissue viability through rapid diffusion of nutrients and oxygen and also allowing rapid changes in the secretion rate of insulin and/or other bioactive agents in response to changing physiology. Implantations of living cells, tissue, drugs, medicines and/or enzymes, contained in the bioartificial implants may be made to treat and/or prevent disease.

L'invention porte sur des implants bioartificiels, en particulier des pancréas bioartificiels, et des méthodes pour les fabriquer et les utiliser. En particulier, ces implants peuvent être de fines feuilles contenant des cellules, totalement biocompatibles pendant une longue période, et susceptibles de ne pas provoquer de fibrose. Ces fines feuilles à haute densité de cellules sont de préférence totalement récupérables, et ont des dimensions propices au maintien de la viabilité optimale d'un tissu grâce à une diffusion rapide de substances nutritives et d'oxygène. Elles favorisent également une modification rapide du taux de sécrétion d'insuline et/ou d'autres agents bioactifs en réaction à des changements de l'état physiologique. Des implantations de cellules, de tissus, de substances, de médicaments et/ou d'enzymes vivants, contenus dans les implants bioartificiels, peuvent être effectuées pour soigner et/ou prévenir une pathologie.

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