| 摘要 |
<p>An object of the present invention is to provide a polysulfone hollow fiber membrane for blood purification, which has no danger that any component of the membrane dissolves out, and which can be used suitably for hemodialysis and blood filtration and remove selectively and efficiently low-molecular-weight proteins having molecular weight of 10,000 to 30,000 contained in blood, and to provide a blood purifier, which can be used suitably as a hemodialyzer, a filter for hemodiafiltraion and a blood filter. The present invention is a hollow fiber membrane for blood purification comprising a polysulfone resin, wherein there are slit-shaped micropores having an average width of 0.02 to 0.15 .mu.m on the inner surface thereof; there are micropores having an average pore size of 0.1 to 1 .mu.m on the outer surface thereof; the inside thereof has a sponge-like structure; there are no large voids having a diameter of more than 10 .mu.m on the inner and outer surface thereof and inside the membrane; water permeability thereof is 400 to 2,500 ml/m2 ~ hr ~ mmHg; and a permeation ratio for the total proteins is 1% or less, and a blood purifier wherein the said hollow fiber membrane for blood purification of the invention is put into a cylindrical housing which is equipped with a blood inlet and a blood outlet, and either a dialysate solution inlet and a dialysate solution outlet or a filtrate outlet.</p> |
