Gambro Lundia Ab

Christian Vartia

Olof Jansson

Henrik Lindgren

Per-Olof Borgqvist

A system for producing fluid for peritoneal dialysis (PD) is disclosed. The system includes a fluid path including two or more PD concentrate connectors that are each connected to a source of PD concentrate fluid, and an inlet connector connected to a fluid line arranged for transportation of effluent fluid from a patient. The system also includes a forward osmosis (FO)-unit including a draw side and a feed side separated by a FO-membrane. The FO-unit is fluidly connected to the fluid path and receives one or more PD concentrate fluids at the draw side and the effluent at the feed side. Water is transported from the effluent to the one or more PD concentrate fluids through the FO-membrane via an osmotic pressure gradient between the draw side and the feed side, thereby diluting the one or more PD concentrate fluids into a diluted PD concentrate fluid.

System and method for producing fluid for peritoneal dialysis

A control unit () is arranged to control a dialysis fluid distribution system () comprising two volumetric pumps (P, P) and a dialyzer (). The control unit () is operable in a calibration mode, to establish a bypass flow path that bypasses the dialyzer () and extends between the pumps (P, P) and to operate the pumps (P, P) at first and second calibration speeds so as to balance the flow rates generated by the pumps (P, P), e.g. based on a measured pressure or fluid level in dialysis fluid distribution system (). The control unit () determines, based on the first and second calibration speeds, a relation between the stroke volumes of the pumps (P, P). The control unit () is further operable in a treatment mode, to establish a main flow path that extends between the first and second pumps (P, P) via the dialyzer () and to control the first and second pumps (P, P), based on the relation between their stroke volumes, to operate at a respective treatment frequency so as to generate a selected ultrafiltration rate in the dialyzer ().

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Veberod, Sweden

Christian Vartia