User manual

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Concerning infusion dispensing, only the version using two stoppers and a supporting
trail is used. This arrangement, together with the principle of the function, can be seen in Fig.
5.4.
Fig. 5.4: Drawing principle by means of a rotation peristaltic head.
This arrangement is very simple regarding maintenance, insertion of new tubing/set,
etc. The picture depicts a peristaltic head with an inserted set. This configuration is also used
in other applications, such as, for example, the blood pump in dialysis, the extra-corporeal
circuit, etc., see Fig. 5.5.
Fig. 5.5: Peristaltic pumps in Gambro AK-100 haemodialysis.
The actual rotor is driven by an engine equipped with the revolutions’ and position
encoder, and also by a gearbox. The most commonly used are brush DC motors or stepper
motors.
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