Patent ID: 9056280
Filing Date: 2015-06-16
Classification: A61L,A61M,B01D

Abstract:
1. A method for sterilizing a blood purifier, which method comprises (a) providing a blood purifier comprising substantially dried selectively permeable separation membranes as a main component, wherein the selectively permeable separation membrane comprises a polysulfone-based polymer containing polyvinyl pyrrolidone, and wherein the moisture content of the selectively permeable separation membrane is not lower than 0.5 mass % and not higher than 2.2 mass %, (b) packing and sealing the blood purifier in a packaging bag, together with (i) an oxygen scavenger and a humectant or (ii) an oxygen scavenger capable of releasing moisture, under conditions that provide an atmosphere of a relative humidity of not less than 68% RH at room temperature in the sealed packaging bag, wherein the water vapor permeability of the sealed packaging bag is not higher than 5 g/(m (c) exposing the packed and sealed blood purifier to a radioactive ray and/or an electron ray, so as to sterilize the blood purifier.