Fresenius Medical Care 5008, Руководство по эксплуатации

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Chapter 11: System Description
11-52 Fresenius Medical Care 5008 OP 5/09.06
11.9 Definitions and Terms
Terms used in these Operating Instructions are explained in the
following.
Arterial pressure Pressure in the extracorporeal circuit between arterial cannula and
blood pump.
Purified water Water suitable for hemodialysis (e.g. water purified by reverse
osmosis).
Bubble catcher Device integrated in the blood line for the separation of gases which are
not dissolved in the blood.
Blood alarms Group of alarms which cause the blood systems to stop:
– Arterial pressure
– Venous return pressure
– Transmembrane pressure
– Blood leak
– Air
– BP stop alarm
Blood systems Systems which maintain and control the function of the extracorporeal
circuit.
Bypass Process during which the dialysate is diverted away from the dialyzer.
Dialyzer blood port Arterial or venous blood port on the dialyzer.
Dialysate The exchange fluid used in dialysis.
Dialysate pressure The pressure present in a defined section of the system carrying the
dialysate, e.g. at the dialyzer outlet.
Pressure line connection Connector for the pressure line, e.g. Luer-lock.
Pressure line Line connecting the tubing system to the pressure monitoring unit.
Compliance chamber Receptacle for leveling variations in pressure and volume, e.g. in
Single-Needle dialysis.
Extracorporeal circuit A section of the blood circulation which takes place outside of the body.
ISO-UF (sequential
therapy) Separation of the hemodialysis procedure into two successive
treatment phases each including either ultrafiltration only or diffusion
and ultrafiltration (procedure according to the Bergström method).
Conductivity Reciprocal specific electrical resistance, e.g. of the dialysate.
Pump head The pump head consists of the pump rotor and the pump stator.
Pump rotor Driven part of the pump head.
Pump line segment Line segment which is inserted in the pump head.