Layered scaffold suitable for osteochondral repair

A - Human Necessities – 61 – L

Patent

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Details

A61L 27/12 (2006.01) A61L 27/24 (2006.01) A61L 27/42 (2006.01) A61L 27/46 (2006.01) A61L 27/56 (2006.01)

Patent

CA 2750605

The invention relates to a method for producing a multi-layer collagen scaffold. The method generally comprises the steps of: preparing a first suspension of collagen and freezing or lyophilising the suspension to provide a first layer; optionally preparing a further suspension of collagen and adding the further suspension onto the layer formed in the previous step to form a further layer, and freezing or lyophilising the layers, wherein when the layer formed in the previous step is formed by lyophilisation the lyophilised layer is re-hydrated prior to addition of the next layer; optionally, repeating the aforementioned step to form one or more further layers; and preparing a final suspension of collagen and pouring the final suspension onto the uppermost layer to form a final layer, and freeze-drying the layers to form the multilayer collagen composite scaffold.

La présente invention concerne une méthode de production d'un échafaudage de collagène multicouche. Ladite méthode comprend, d'une manière générale, les étapes suivantes : préparation d'une première suspension de collagène et congélation ou lyophilisation de la suspension afin de former une première couche; éventuellement, préparation d'une autre suspension de collagène et ajout de l'autre suspension sur la couche formée lors de l'étape précédente afin de former une autre couche, et congélation ou lyophilisation des couches (lorsque la couche formée durant l'étape précédente est formée par lyophilisation, la couche lyophilisée est réhydratée avant l'ajout de la couche suivante); éventuellement, répétition de l'étape susmentionnée pour former une ou plusieurs autres couches; préparation d'une suspension finale de collagène, distribution de la suspension finale sur la couche supérieure pour former une couche finale, et lyophilisation des couches pour former l'échafaudage composite de collagène multicouche.

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