Apparatus for plasma separation/exchange by double filtration

摘要

The invention provides an apparatus for plasma separation/exchange by double-step-membrane filtration, namely separation of blood into plasma and a corpuscular fraction and separation of high- molecular-weight substances (e.g. gamma-globulin) in the plasma from low- molecular-weight substances (e.g. albumin), and addition of a substitute fluid. A method of treating blood is also provided.PPThe apparatus and method are effective e. g. in the treatment of blood of patients with peripheral circulatory insufficiency due to arteriosclerosis and of patients with rheumatoid arthritis, which is an autoimmune disease.