Apparatus for separating blood plasma, and apparatus therefor.

摘要

A method and apparatus for the semicontinuous separation of plasma from blood collects blood from and returns blood to an individual in an intermittent manner. Blood introduced from, say, a donor is fed into membrane-type blood plasma separating means (1) by a circulating mean (3) so that plasma may be separated from the blood. Some of the concentrated blood that results is pooled in blood reservoir means (8), and the remaining concentrated blood is mixed with newly introduced blood and fed into the plasma separating means (1) to repeat plasma separation and, hence, concentration. When a predetermined amount of blood has been introduced from the donor, some of the blood remaining in the system is returned to the donor by a blood feed circuit, while the blood remaining in the system is subjected to plasma separation and concentration again. Separation of plasma is thus performed during both the blood introdution and return cycles without pause.