Sterile autologous, allogenic or xenogenic implant and the...

A - Human Necessities – 61 – L

Patent

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Details

A61L 27/36 (2006.01) A61K 38/39 (2006.01) A61L 27/60 (2006.01)

Patent

CA 2737616

The subject of the invention is a sterile, dehydrated acellular implant, which during its rehydration by water or bodily fluids displays anisotropic expansion and can act as a substrate for adhesion, migration and growth of live cells. Collagen structures of the transplant are at least partially denatured through the action of heat or organic solvents, such as lower aliphatic al-cohols and ketones, which simultaneously act as preservative and sterilization agents, especially for certain types of viruses. The implant is sterilized by radiation while in an substantially dehydrated state, preferably by accelerated electrons. The transplant can be derived from various animal tissues, especially mammalian tissues, such as human or porcine tissues. The tissues suitable for the invention can be, for example, skin, placenta, pericardium, peritoneum, intestinal wall, tendon, blood vessel, etc. The implant is suitable for use in human and veterinary medicine, for instance as a temporary wound and burn cover, for the repair, substitu-tion and regeneration of tissues, and also as a substrate for laboratory cell cultivation.

L'invention porte sur un greffon acellulaire déshydraté stérile, qui au cours de sa réhydratation par l'eau ou par des fluides corporels présente une dilatation anisotropique et peut servir de substrat pour l'adhésion, la migration et la croissance de cellules vivantes. Les structures collagéniques du greffon sont au moins partiellement dénaturées sous l'action de chaleur ou de solvants organiques tels que des alcools ou cétones aliphatiques inférieurs, agissant simultanément comme agents de conservation et de stérilisation, en particulier pour certains types de virus. Le greffon est stérilisé par rayonnement, à l'état sensiblement déshydraté, de préférence au moyen d'électrons accélérés. Le greffon peut être dérivé de divers tissus animaux, en particulier de tissus de mammifères tels que l'homme ou le porc. Les tissus se prêtant à l'invention sont par exemple la peau, le placenta, le péricarde, le péritoine, la paroi intestinale, les tendons, les vaisseaux sanguins, etc. Ce greffon peut être utilisé en médecine humaine et vétérinaire, par exemple comme protection temporaire de plaies et de brûlures, pour la réparation, le remplacement et la régénération de tissus, ainsi que comme substrat pour la culture de cellules en laboratoire.

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