Patent ID: 8501008

Claim:
A method for reducing the number of leukocytes in blood through treating the blood in an arrangement of a plurality of fibers based on organic polymers by adsorption of the leukocytes on the fiber surface, whereby the plurality of fibers is fixed in a housing with an inlet arrangement and an outlet arrangement wherein an outer space is formed around the fibers, the blood is channeled via the inlet arrangement into the housing and into the outer space, then flows through the housing, whereby the blood flows through the outer space and around the fibers on their external surface, and finally exits the outer space and the housing via the outlet arrangement, characterized in that fibers are used that cause a generation of the complement activation product C5a in a concentration of at least 10 μg per m 2 of fiber surface when blood flows around their external surface, and that the arrangement of the fibers shows a high degree of order.