Collagen biofabric and methods of preparation and use therefor

A - Human Necessities – 61 – K

Patent

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Details

A61K 38/39 (2006.01) A61K 35/50 (2006.01) A61L 15/32 (2006.01) A61L 27/24 (2006.01) A61L 27/36 (2006.01) A61L 27/38 (2006.01) A61P 17/02 (2006.01) A61P 27/02 (2006.01)

Patent

CA 2479903

The present invention relates to collagenous membranes produced from amnion, herein referred to as a collagen biofabric. The collagen biofabric of the invention has the structural integrity of the native non-treated amniotic membrane, i.e., the native tertiary and quaternary structure. The present invention provides a method for preparing a collagen biofabric from a placental membrane, preferably a human placental membrane having a chorionic and amniotic membrane, by decellularizing the amniotic membrane. In a preferred embodiment, the amniotic membrane is completely decellularized. The collagen biofabric of the invention has numerous utilities in the medical and surgical field including for example, blood vessel repair, construction and replacement of a blood vessel, tendon and ligament replacement, wound- dressing, surgical grafts, ophthalmic uses, sutures, and others. The benefits of the biofabric are, in part, due to its physical properties such as biomechanical strength, flexibility, suturability, and low immunogenicity, particularly when derived from human placenta.

L'invention concerne des membranes collagènes produites à partir d'amnion, mentionnées ici sous l'appellation de texture biologique collagène. Ladite texture biologique collagène présente l'intégrité structurale de la membrane amniotique native non traitée, c.-à-d. la structure tertiaire et quaternaire native. L'invention concerne un procédé permettant de préparer une texture biologique collagène à partir d'une membrane placentaire, de préférence une membrane placentaire humaine présentant une membrane chorionique et amniotique, par décellularisation de la membrane amniotique. Dans un mode de réalisation préféré, la membrane amniotique est entièrement décellularisée. La texture biologique collagène de l'invention présente de nombreuses possibilités d'application dans le domaine médical et chirurgical, y compris par exemple la réparation de vaisseaux sanguins, la construction et le remplacement d'un vaisseau sanguin, le remplacement d'un tendon et d'un ligament, le pansement de blessures, les greffes chirurgicales, les utilisations en ophtalmologie, les sutures et autres. Cette texture biologique doit en partie les avantages qu'elle présente à ses propriétés physiques, telles que la résistance biomécanique, la flexibilité, la suturabilité et une faible immunogénicité, notamment lorsqu'elle est dérivée de placenta humain.

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