Cl (Closed); Pressure Range From 5Mbar To 50Mbar; Spontaneous Respiration; Vol (Volume-Controlled Ventilation) - Stephan Artec Service Instructions Manual

Anaesthesia apparatus

Table of Contents

Circle System

6.1.1

CL (closed)

6.1.2

6.1.3

6.1.4

The valve is completely closed. This setting is necessary for operation in

respirator mode. In this mode, the spent respiratory gases are evacuated

via the ejector on the patient component during the expiration phase.

This setting is used to limit the maximum pressure during manual

ventilation. When the set pressure is reached, the valve evacuates.

During spontaneous respiration of the patient under light anaesthesia, the

valve closes in the inspiration phase, the patient now breathes the fresh

gas provided by the apparatus. In the expiration phase, the valve opens

and evacuates the system until ambient pressure is reached.

This setting is to be used in case of assisted ventilation with the patient

triggering the respiration and the respirator deepening the respiration.

Aside of that, it is possible to switch to SP briefly in case of manual

ventilation in the pressure range of 5 to 50 mbar to evacuate an overfilled

respiratory bag.

With the valve setting VOL, the circle system is closed automatically to

guarantee supply of the patient with the desired respiratory working

volume. Spent and excess respiratory gases escape from the valve at the

end of the expiration phase. During the expiration phase, pressure in the

system never rises above 1,5 mbar.

SA-103-0109V1.3-HAO-GB

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