Patent ID: 8083706
Filing Date: 2011-12-27
Classification: A61M,B01D,B01L

Abstract:
1. A device for performing a blood treatment, comprising: a membraneless processor having a microfluidic channel with a blood inlet, a blood outlet, an extraction fluid inlet, and an extraction fluid outlet, the blood inlet and the blood outlet having ports for connection to a patient access, the microfluidic channel being configured such that the blood inlet and outlet and the extraction fluid inlet and outlet are in direct fluid communication without an intervening membrane such that blood and extraction fluid can be placed in direct contact, the membraneless channel being configured to permit blood and extraction fluid to flow together therein without mixing; and a membrane-based processor which connects the extraction fluid outlet and the extraction fluid inlet to form a recirculating flow channel, the extraction fluid outlet being free of any openings or filters effective to block the passage of particles of at least 50,000 Daltons from entering the recirculating flow channel, the recirculating flow channel being configured such that extraction fluid is able to flow from the extraction fluid outlet to the extraction fluid inlet without passing through a membrane, the membrane-based processor having a membrane positioned along the recirculating flow channel to permit water to flow through the membrane and thereby leave the recirculating flow channel.