Asahi Kasei Medical Co., Ltd.

Takako Kai

Kazuhiko Nakamura

Tomohisa Yokomizo

Nobukazu Shimada

A blood processing filter includes a container having 2 ports respectively functioning as an inlet for a liquid to be processed and as an outlet for the processed liquid, and a filtration medium filled in the container, wherein an airflow resistance of the filtration medium is 55.0 kPa·s/m or more and less than 85.0 kPa·s/m, the filtration medium includes a filter material A having an airflow resistance per unit basis weight of 0.01 kPa·s·m/g or more and less than 0.04 kPa·s·m/g and a filter material B having an airflow resistance per unit basis weight of 0.04 kPa·s·m/g or more, at least a part of the filter material A is disposed on a side closer to the inlet for a liquid to be processed than the filter material B, and a sum of airflow resistances of the filter material A is 6.0 kPa·s/m or more.

Blood processing filter and method for producing blood processing filter

The present invention provides a filter element for a blood processing filter, comprising a nonwoven fabric, wherein the quantity of crystallization heat of the uncrystallized portion of the nonwoven fabric is 5 J/g or smaller before steam heat treatment.

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Tokyo, Japan

Takako Kai