Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1989-11-03
1991-03-05
Jones, W. Gary
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210739, 210744, 210 91, 210123, 210314, 21032165, 21032171, 21032172, 210806, 210929, B01D 6128, B01D 6134
Patent
active
049975706
ABSTRACT:
A method and a device for ultrafiltration during hemodialysis are described in which ultrafiltrate fluid, before removal from the dialysis circuit, is passed through a balancing device, which is also used as ultrafiltrate pump. For this purpose, a controller controls and actuates inlet, outlet, and dialyzer valves, in such a way that a desired amount of ultrafiltrate, corresponding to the filling volume of a balancing chamber or a multiple thereof, is introduced to the discharge through the balancing chamber. In order to carry out continuous ultrafiltration during hemodialysis, a predetermined amount of air is introduced to the dialysis fluid flow circuit through an air separator and is then pumped off during hemodialysis so that a corresponding amount of ultrafiltrate is obtained.
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patent: 4530759 (1985-07-01), Schal
patent: 4618343 (1986-10-01), Polaschegg
patent: 4770769 (1988-09-01), Schael
patent: 4857199 (1989-08-01), Cortial
patent: 4935125 (1990-06-01), Era et al.
Fresenius AG
Jones W. Gary
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