Chapter 1—Overview
2008K Hemodialysis Machine Operator’s Manual Rev P 37
The Dialysate Path
The 2008K hemodialysis machine is a three-stream dialysate delivery machine: it mixes the
dialysate from three different sources and sends it to the dialyzer for treatment. The three
main parts of the dialysate are: purified (RO) water, acid concentrate, and bicarbonate
concentrate. After the machine heats and degasses the water, it mixes in the concentrates to
form dialysate. The machine then filters the dialysate with the Diasafe Plus filter (see page
186). The ultra-pure dialysate pumps through dialysate lines to the ports on the side of the
dialyzer. Meanwhile, the blood pumps through the bloodlines connected at each end of the
dialyzer. The blood and dialysate meet in the dialyzer but never touch. The dialysate pulls
waste from the patient’s bloodstream and then washes it out the drain. The Balancing
Chamber makes sure that the incoming flow of the dialysate is equal to the volume of the
outgoing flow to control ultrafiltration from the patient’s body. Ultrafiltration (UF) is the
process of removing excess fluid during the treatment. The fluid that is removed is called UF
Removed and the value is displayed on the machine’s “Home” screen.
The Dialysate Section
The Dialysate Section contains connectors for acid and bicarbonate concentrates.
Red Acid
Connector
Concentrate Jug
Connector Cap
Blue Bicarbonate
Connector
Fluid Sample
Port
Figure 13 – The Dialysate Section
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