Layered collagen and HA scaffold suitable for osteochondral repair
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United States of America Patent
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Apr 11, 2017
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app pub date -
May 29, 2015
filing date -
Jan 23, 2009
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Abstract
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 lyophilizing 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 lyophilizing the layers, wherein when the layer formed in the previous step is formed by lyophilization the lyophilized 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 multi-layer collagen composite scaffold.
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