Patent ID: 7156240
Filing Date: 2007-01-02
Classification: A61M,B01D,B01J

Abstract:
1. A filter for reducing leukocytes and platelets from an erythrocyte preparation or a whole blood preparation, comprising a filter substrate coated with a polymer, the content of the polymer being 0.5–10 mg/m 2 per unit area of the total surface of the filter substrate, and the polymer having a molecular weight distribution in which the content of components having a molecular weight not more than ¼ of the peak top molecular weight in the gel permeation chromatogram is 20% or less, wherein the polymer coating ratio in the entire surface of the filter substrate is less than 70%, wherein the polymer has a weight average molecular weight of 300,000–3,000,000, and wherein the polymer is swellable and not dissolved in water.