Apparatus for the treatment of plasma.

摘要

This invention provides an apparatus (60) for plasma treatment which is connected to a centrifugal separator (50) disposed in the extracorporeal circuit so as to separate plasma component seperated from blood by the centrifugal separator bowl (3) into high-molecular-weight substances and low-molecular-weight substances containing albumin by means of filtration membrane module (6) and to return purified plasma freed of high-molecular-weight substances to the body of the patient, and the apparatus comprises a plasma feeding circuit (16) for connecting the centrifugal separator bowl (3) disposed in said extracorporeal circuit with the filtration membrane module (6); a plasma reservoir bag (4) in said circuit (16); means (21) for sensing the fluid level in said bag (4); a plasma feed pump (5) in which the fluid flow rate can be adjusted while controlled in association with said fluid level sensing means (21) so as to fix the fluid level within a predetermined range; a circuit (17) for returning purified plasma containing albumin and freed of high-molecular-weight substances by said filtration membrane module (6) to the patient's body; a purified plasma reservoir vessel (8) in said circuit; a purified plasma delivery pump (7) in which the fluid flow ratio between plasma introduced into the filtration membrane module (6) and purified plasma delivered therefrom is set at a predetermined value while controlled in association with said plasma feed pump (5); and a condensed plasma discharge pump (26) in which the quantity of discharged high-molecular-weight substances is set at a predetermined value in the condensed plasma discharge circuit (27) extending from the filtration membrane module (6). The apparatus (60) for plasma treatment according to this invention is controlled independently of the centrifugal separator (50) and is therefore capable of operating as a part of systematised unit when the filtration membrane module (6) thereof is connected to either of two kinds of centrifugal separator (50) which differ from each other in performance.