Table of Contents
Advertisement
3.2
Valves group
The valves group (or also the Breathing System) is the device that conveys the fresh
gases (coming from anaesthesia module) to the patient; collects the exhaust gases
and conveys them to the CO 2 absorber canister, and then toward the bellow of valves
group to be delivered to the patient
When the CO 2 absorber canister is inserted, the system is automatically configured in
rebreathing modality. When the CO 2 absorber canister is removed, the system is
automatically configured in non-rebreathing modality (real open circuit). It is possible
to insert and remove the canister during intervention.
When using the valves group in non-rebreathing, a greater amount of fresh gases
must be delivered with respect to the Minute Volume value set on the ventilator.
In any case, the ventilator ensures that the patient receives the Minute Volume by
aspirating the missing amount from ambient air, through the apposite safety valve,
but, in this case, patient anaesthesia is not guaranteed as the N 2 O and anaesthetic
agents supply will be present in an insufficient percentage in the gas mixture.
The manual ventilation is possible directly from the valves group or with the TO and
FRO external system.
3.2.1 Main features
•
Perfect integration with the work-shelf, upper extraction by apposite handle;
completely autoclavable.
•
Automatic connections with double tightness gaskets to prevent accidental
leakages.
•
It allows to ventilate in modalities: real open circuit, semi-closed circuit, closed
circuit at low flows.
•
It allows the spontaneous and manual ventilation also in case of anaesthesia unit
failure or machine off.
•
The gas recycling system is of selective type, therefore the soda lime
consumption of fresh gases is optimized.
•
It's heated to reduce the accumulation of condensate and to heat the fresh gases.
•
The passage to a ventilation modality to another is completely controlled by the
ventilator without any user's action on valves group.
•
The flow and oxygen sensor calibration is completely automatic and it does not
require particular manual operations.
•
Thanks to the extreme rationality of the system and to the drastic reduction of
accidental leakages, the preventive and extraordinary maintenance operations
are reduced to a minimum.
User's Manual, DU3310103-MRI / rev.3 - 02.05.2019
Valves group
3-3
Advertisement
Table of Contents
