16
For their use, the pulmonary ventilators require fundamental accessories that make up the patient circuit, which includes in the assembly
order the Mask, Patient valve, straight fit, antibacterial filter, corrugated tube.
Spencer 170 includes
:
Component
Description
Straight fit 22/15
Allows the connection between the filter and the patient valve
Corrugated tube
Canalizes the medical gas flow and connects the devices of the patient circuit. It is directly
connected to the medical gas output placed on the ventilator
Patient valve
Equipped with overpressure and non-rebreathing valves, allows the connection between the mask
and the straight fit. It must be chosen according to the patient to be treated (Adult or Pediatric)
Filter
Antibacterial filter placed between the straight fit and the corrugated tube
Face mask
Is the main interface between the device and the patient
11.
INSTRUCTION FOR USE
11.1
Connection to the pneumatic supply
After the device has been connected to the power supply according to the
provided specifications, connect the pneumatic supply hose to the socket
placed on the pressure reducer installed on the oxygen tank. Insert then the
probe inside the socket on the connections side of the lung ventilator
pressing until it clicks confirming the proper connection.
To verify the integrity of the electrical connection, slightly pull the connector
verifying that no disconnection happens.
For the pneumatic supply, slightly pull the probe doing a little rotation at the
same time.
Connect the breathing tube to the output marked with “PATIENT CIRUIT” on the
connections side of the lung ventilator. The tube must be inserted for about 2,5 cm. If the
insertion is difficult, the tube can be slightly rotated during insertion making the operation
easier.
The breathing tube must not rotate easily and freely. If this happens, it is an obvious sign of damage to the hose or of its incompatibility with
the device.
In these conditions the device is ready for use, and this is identified by this LED
.
To disconnect the device from the pneumatic supply, push the outer plastic part of the socket in axial direction while pulling out the probe.
11.2
Turn on the device
Turn on the device by pressing on the button identified with the symbol “
I
”.
The device will perform an autodiagnostic test by turning on all LEDs for about 1 second and emitting 3 short sounds.
When this test is concluded, the device automatically start the ventilation in “Controlled mode” according to the set parameters.
If the device is not working or there are different visual or acoustic signals, refer to the paragraph explaining the warning signs or the section
TROUBLESHOOTING.
On the frontal panel will be displayed the ventilation mode, the breathing phases and any alarms or informations related to the power or
pneumatic supplies.
11.3
Setting breathing parameters
On the frontal panel there are 3 adjustment knobs. Breathing parameters must be adjusted
before
applying the mask to the patient. During
these adjustments, the physician using the device must consider the patient’s weight, the Tidal Volume required by the patient and its
clinical conditions.
Volume minute adjustment
The Volume minute is the volume of gas delivered to the patient in a minute. It differs from the delivered volume for each breath (or Tidal
Volume) as this is closely related to the breathing frequency according to the relation
𝑉𝑇 =
𝑉𝑜𝑙𝑢𝑚𝑒
𝑚𝑖𝑛𝑢𝑡𝑒
𝐹
.
The device allows setting between 2 and 20 L/min
Breathing frequency adjustment
Rotating the frequency adjustment knob, is possible to set the number of breaths per minute.
The frequency has consequences both on the tidal volume according to the mentioned relation and on the activation level of the high
pressure alarm. The high pressure alarm is activated at 25mbar if the frequency is set higher than 20 breaths/min and at 60mbar if the
frequency is less than 20 breaths/min.
The device allows settings between 5 and 40 breaths/min (bpm).
Pressure limit adjustment
Through this setting, is possible to limit the maximum pressure in the breathing circuit to the desired value.
If the pressure limit is
exceeded, the volume minute is no longer guaranteed.
The device allow settings between 20 and 60mbar.