Collagen/hydroxyapatite composite scaffold, and process for the production thereof
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United States of America Patent
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Sep 22, 2015
Grant Date -
Jul 11, 2013
app pub date -
Mar 6, 2013
filing date -
Feb 9, 2007
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Abstract
A process for producing a collagen/hydroxyapatite (HA) composite scaffold comprises the steps of forming a homogenous suspension of collagen and HA in an acidic solution, lyophilizing the suspension until a desired final freezing temperature is reached to produce the composite scaffold, and optionally cross-linking the composite scaffold, wherein the ratio of HA to collagen is at least 1:10 (w/w). Also provided is a collagen/hydroxyapatite (HA) composite scaffold comprising a homogenous distribution of hydroxyapatite within a porous, crosslinked, collagen matrix, wherein the ratio of HA to collagen is at least 1:10 (w/w). Suitably, the composite scaffold has a porosity of at least 99% (v/v), and a compressive stiffness of at least 0.3 KPa. Composite scaffolds of the invention may be used to provide osteoconductive bone implants and tissue engineering implants.
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