Development of High Performance Blood Purification System using Novel Aromatic Polyimide Hollow Fiber

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We report the application of aromatic fluorinated polyimide (6FDA-6FAP) to high performance continuous blood purification system for acute renal failure. For this purpose, a series of porous polyimide membranes were fabricated by different conditions, and micro to nanofiltration membranes was obtained. We focused on a wet phase inversion process as method for preparing a novel porous membrane, since the membrane with nano-order-scale fine structure designed from nanoscale nodule or pore sizes is of great interest in areas such as medical device for clinical use. The obtained membrane showed good ultra filtration rate and anti-fouling property. The various conditions to fabricate asymmetric porous hollow fiber were determined. Also, we found that the porous membrane showed excellent blood and immune compatibility both in vivo and in vitro by the selective and oriented adsorption of IgG on the surface. We have manufactured for trial the tangential module for clinical use.