Toyo Boseki Kabushiki Kaisha

Dainippon Ink and Chemicals, Incorporated

Eisuke Tatsumi

Susumu Kashiwabara

Hidenori Tanaka

Kazunari Sakai

Hisateru Takano

Yoshiyuki Taenaka

Toru Takehisa

Masaki Satoh

Tomohiro Nishinaka

A membrane artificial lung performs gas exchange between blood and a gas via the membrane by flowing the blood in one side of the membrane and flowing oxygen or an oxygen-containing gas in the other side of the membrane. The membrane has a hollow fiber membrane of poly-4-methylpentene-1 and an oxygen permeation rate Q(O) at 25&#xb0; C. of from 1&#xd7;10to 3&#xd7;10(cm(STP)/cm&#xb7;sec&#xb7;cmHg) and an ethanol flux of from 0.1 to 100 ml/min&#xb7;m. The membrane has, in the side of the blood flow, a surface having an ionic complex derived from: quaternary aliphatic alkylammonium salts; and heparin or a heparin derivative. The quaternary alkylammonium salts are a quaternary aliphatic alkylammonium salt having from 22 to 26 carbon atoms in total and a quaternary aliphatic alkylammonium salt having from 37 to 40 carbon atoms in total.

Artificial lung of membrane type

Growing community of inventors

Osaka, Japan

Eisuke Tatsumi