Affinity membrane system and method of using same

B - Operations – Transporting – 01 – J

Patent

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Details

B01J 20/28 (2006.01) A61M 1/36 (2006.01) B01D 15/08 (2006.01) B01D 61/00 (2006.01) B01D 63/02 (2006.01) B01D 67/00 (2006.01) B01D 69/08 (2006.01) B01D 69/14 (2006.01) B01J 20/32 (2006.01)

Patent

CA 2227550

The present invention provides an improved affinity membrane device and method for the effective removal of target molecules in plasma. The affinity membrane device is designed for use in an extracorporeal blood circuit and can be employed concurrently with other therapeutic processes for the purification of blood. The device of the present invention consists of hollow fiber membranes having specified dimensions and transfer properties, ligand immobilized to the pore surface of the hollow fibers, and a housing to encase the hollow fibers and allow appropriate entry and exit of the blood. In a preferred embodiment, specific immobilization chemistries are utilized to attach the ligands to the hollow fibers for optimal function.

L'invention concerne un dispositif à membranes d'affinité et un procédé d'extraction efficace de molécules cibles dans le plasma. Le dispositif à membranes d'affinité est conçu pour être utilisé dans un circuit sanguin extracorporel et éventuellement en même temps que d'autres méthodes thérapeutiques de purification du sang. Le dispositif de l'invention consiste en membranes constituées de fibres creuses présentant des dimensions et des propriétés de transfert déterminées, en un ligand immobilisé sur la surface des pores des fibres creuses, et en une enveloppe entourant les fibres creuses et permettant l'entrée et la sortie appropriée du sang. Dans un mode de réalisation préféré, des solutions d'immobilisation spécifiques sont utilisées pour fixer les ligands aux fibres creuses de sorte que la fonction soit optimale.

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