Sterile Blutfiltrationsvorrichtung mit einem System zum Optimieren der Blutrückgewinnung

摘要

A disposable sterile apparatus (1) for blood filtration with a system for the optimization of blood recovery in the passage from one pouch to the next, comprising a main tube (4, 8, 13, 18, 19) containing sterile air, one end of which is designed for the connection to a first container (pouch) (2) containing the liquid to be filtered and the other end of which is connected to a second empty container (pouch) (20). The foregoing tube (4, 8, 13, 18, 19) includes at least one filter (12) being arranged in the flow of the liquid. The novelty consists in that the apparatus (1) contains a tube (7) for the return of air from said second container (20) to said first container (2) acting to equalize pressure of the liquid at the two extremities of the self-same main tube (4, 8, 13, 18, 19) which includes at least one filter (12) after the liquid has been filtered. The air return line (7) further comprises a one-way or check valve (7a) which permits the passage of air from the second (20) to the first container (2).