Method of sterilizing a blood dialyzer having semipermeable polymeric membranes by gamma-ray irradiation.

摘要

A blood dialyzer having semipermeable polymeric dialyzing membranes is sterilized by impregnating the dialyzing membranes, for example, dialyzing hollow fibers, with an aqueous solution of a gamma -ray-absorbent and water-soluble dihydric aliphatic alcohol and irradiating gamma -rays to the dialyzing membranes, to prevent the deterioration of the dialyzing membranes and the generation of ultraviolet-ray-absorbent substance in the dialyzing membrane.