10
4. Product use
4.1. Principle of operation
The illustration on page 2
1
shows the ventilation gas flow into the bag and to and from
the patient during manual operation of the resuscitator�
1a
Oval Plus Silicone Resuscitator
Adult/Pediatric,
1b
Oval Plus Silicone Resuscitator Neonate with oxygen reservoir bag,
1c
Oval Plus Silicone Resuscitator Neonate with oxygen reservoir tube�
The gas flow is similar when the patient is breathing spontaneously through the device�
The oxygen reservoir bag is fitted with two valves, one allowing ambient air to be drawn
in when the reservoir is empty
1.2
and one spilling out surplus oxygen when the reservoir
bag is full�
1.1
1.1
Excess oxygen release,
1.2
Air inlet,
1.3
Oxygen inlet,
1.4
Patient connector,
1.5
Expiration,
1.6
Manometer port,
1.7
Pressure-limiting valve�
4.2. Inspection and preparation
The resuscitator must be unpacked and prepared (including performing a functionality
test) for immediate use in emergency situations�
4.2.1. Preparation
• Prepare the resuscitator according to the assembly guide and place all items in the
carrying bag supplied with the resuscitator�
• If a face mask is supplied with the resuscitator, ensure to remove the protective pouch
(if any) before use�
• Before use on the patient make a brief functionality test as described in section 4�2�2�
4.2.2. Test of function
Resuscitator
Close the pressure-limiting valve with th e override cap
3.2
and close the patient connector
with the thumb
7.1
� Briskly squeeze the bag� The resuscitator shall be resisting the squeeze�
Open the pressure-limiting valve by opening the override cap
3.1
and repeating the
procedure� The pressure-limiting valve should now be activated, and it should be possible
to hear the exhaust air flow from the valve�
Remove the finger from the patient connector and squeeze and release the resuscitator
a few times to ensure that air is moving through the valve system and out of the patient
valve
7.2
�
NOTE:
A slight sound may appear from the moving valve disks during operation� This does
not compromise the functionality of the resuscitator�
Oxygen reservoir bag
Supply a gas flow of 10 l/min at the oxygen inlet connector� Facilitate the unfolding of the
oxygen reservoir bag� Check that the oxygen reservoir bag fills� If not, check the integrity
of the two valve shutters
6.3
or for a tear in the oxygen reservoir bag� Subsequently, adjust
the supplied gas flow according to medical indication�
Oxygen reservoir tube
Supply a gas flow of 10 l/min at the oxygen inlet connector� Check that the oxygen flows
out at the end of the oxygen reservoir tube� If not, check for a blocked oxygen reservoir
tube� Subsequently, adjust the supplied gas flow according to the medical indication�
4.3. Operating the resuscitator
• Use recommended techniques to clear the patient’s mouth and airway and to position
the patient correctly, to secure an open airway�
• Hold the face mask firmly against the patient’s face�
2
• Slide your hand (Oval Plus Silicone Resuscitator Adult and Pediatric) under the handle
(Oval Plus Silicone Resuscitator Neonate does not have a support handle)�
Ventilation of the patient:
During insufflation observe for chest rise� Release the
hand holding the compressible bag abruptly and listen for the expiratory flow from the
patient valve and as well for the visual lowering of the chest�