Abstract
Establishment of the new technology for donor plasmapheresis has been desired to meet recent increasing demand of plasma and its derivatives for medical treatments. The combination of newly developed membrane separator made of cellulose-tri-acetate hollow fiber and especially designed plasma collection system whose extracorporeal volume was 98ml made it possible to carry out donor plasma-pheresis successfully, i. e. safely and efficiently. Forty-two procedures of donor pheresis by our system showed that collection of 500ml plasma was executed within 30-40minutes (plasmapheresis time) and with good ‘recovery ratio’ and sufficiently high sieving coefficients.