Filter medium having a limited surface negative charge for treating a blood material
申请人:ASAHI MEDICAL Co., Ltd.
公开号:EP0561379A1
公开(公告)日:1993-09-22
Disclosed is a filter medium for treating a blood material selected from the group consisting of a leukocyte-containing suspension and plasma, comprising a polymeric, porous element having, in a surface portion thereof, a negative charge and having a surface electric charge of not smaller than -30 µeq/g of the polymeric, porous element. The filter medium and an apparatus having the filter medium packed in a casing having an inlet and an outlet, can be advantageously used for treating a blood material, for example, for separating leukocytes from a leukocyte-containing suspension including whole blood, for blood dialysis or for removing undesired proteinous substances and the like from whole blood or plasma by adsorption-filtration, while effectively controlling a concentration of bradykinin (which is causative of anaphylactic reactions) in a treated blood to a level not exceeding 4,000 pg/ml.
本发明公开了一种用于处理选自含白细胞悬浮液和血浆组的血液材料的过滤介质,该过滤介质由聚合物多孔元件组成,聚合物多孔元件的表面部分带有负电荷,且聚合物多孔元件的表面电荷不小于-30 µeq/g。该过滤介质以及将该过滤介质装入具有入口和出口的套管中的装置,可以很好地用于处理血液材料,例如,从包括全血在内的含白细胞悬浮液中分离白细胞,用于血液透析,或通过吸附过滤从全血或血浆中去除不需要的蛋白质等物质,同时有效地将处理过的血液中缓激肽(导致过敏反应)的浓度控制在不超过 4,000 pg/ml 的水平。