The embodiments provide a bioengineered artificial functional liver which is connected to a patient suffering from acute liver failure and would functional like an ectopic liver. The device uses the cells derived from the patient's own body thereby nullifying the chances of self/non-self-recognition and related immune activation and rejection. The extracted liver cells are grown on a customized 3D matrix called as 3D cell cartridge and these cell cartridges individually function as miniature liver assemblies. Multiple such assemblies when working in parallel would rescue the condition of liver failure. A microfluidic chamber is built with the similar network as found in the liver and the chamber has flow circuits for plasma/de-cellularised blood and the flow circuits are lined by a coculture of hepatocytes, endothelial cells and fibroblasts. The array of cells in the chamber serve as a miniature liver and multiple such arrays will be stacked to achieve a significant hepatic function.
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