| 摘要 |
For ultrafiltration, in a haemodialysis process, the used dialysis fluid is fed into a half-section of a balance chamber for the ultrafiltrate, which has a moving dividing wall to separate the half-sections. A substitute fluid is displaced by the incoming dialysis fluid, into the other half-section. As the used dialysis fluid is processed, the substitute returns from the half-section from where it had been forced out. Also claimed is an apparatus with a balancing unit (23) for the ultrafiltrate, divided into two half-sections (25a, 25b) by a moving dividing wall. One half-section (25a) has a fluid inlet channel (26) linked to the dialysis fluid path, and is connected to the outlet (12) through the dialysis fluid outlet channel (27). The other half-section (25b) is connected to the substitute supply (9) by an inlet channel (28), and it has an outlet channel (29) for the substitute. Closures (30-33) in the channels for the filtrate and substitute are connected to the control unit. The control sets the operation of filling one half-section of the balance unit with the ultrafiltrate and displacing the substitute and, as the filtrate is processed, restoring the level of substitute in the first half-section. |
