Weinmann MEDUMAT Easy User manual
MEDUMAT Easy
Ventilator
Aparato de respiración artificial
Ventilador
Description and instructions for use
Descripción del aparato e instrucciones
Descrição e instruções de funcionamento
English 3
Español 70
Português 146
EN
English
Contents
1. Overview . . . . . . . . . . . . . . . . . . . 4
1.1 Device . . . . . . . . . . . . . . . . . . . . . 4
1.2 Special symbols on the ventilator . 6
2. Legend . . . . . . . . . . . . . . . . . . . . . . 9
3. Description . . . . . . . . . . . . . . . . . 10
3.1 Intended use. . . . . . . . . . . . . . . . 10
3.2 Owner/operator and user
qualification . . . . . . . . . . . . . . . . 11
3.3 Ventilation function . . . . . . . . . . 11
3.4 Demandflow function . . . . . . . . 12
3.5 Patient hose system with patient
valve. . . . . . . . . . . . . . . . . . . . . . 12
3.6 Audio response . . . . . . . . . . . . . 13
4. Safety instructions . . . . . . . . . . 14
4.1 Safety regulations . . . . . . . . . . . . 14
5. Installation . . . . . . . . . . . . . . . . . 18
5.1 Connecting the oxygen cylinder . 18
5.2 Ventilation hose . . . . . . . . . . . . . 19
5.3 Wall mounting set . . . . . . . . . . . 21
6. Using the ventilator . . . . . . . . . 22
6.1 Switching on / self test . . . . . . . . 22
6.2 Selecting the ventilation settings 23
6.3 Performing ventilation . . . . . . . . 25
6.4 Monitoring ventilation . . . . . . . . 25
6.5 Ventilation with PEEP valve . . . . 26
6.6 Ventilation with filter . . . . . . . . . 26
6.7 Demandflow . . . . . . . . . . . . . . . 27
6.8 Terminating ventilation or
Demandflow . . . . . . . . . . . . . . . 28
6.9 Alarm signals . . . . . . . . . . . . . . . 29
6.10 Audio response for user guidance 32
6.11 Calculation of oxygen content/
remaining operating time . . . . . 37
6.12 Alternative ventilation procedures 39
7. Hygienic preparation . . . . . . . . 40
7.1 MEDUMAT Easy . . . . . . . . . . . . . . 40
7.2 Patient valve . . . . . . . . . . . . . . . . 40
7.3 Ventilation hose . . . . . . . . . . . . . . 42
7.4 Masks . . . . . . . . . . . . . . . . . . . . . 42
7.5 Fittings. . . . . . . . . . . . . . . . . . . . . 42
7.6 Cleaning and disinfection
procedure . . . . . . . . . . . . . . . . . . 43
8. Functional checks . . . . . . . . . . . 45
8.1 Intervals . . . . . . . . . . . . . . . . . . . . 46
8.2 Checking for leaks in the system . 47
8.3 Check patient hose system . . . . . 48
8.4 Checking the minute volume . . . . 49
8.5 Checking maximum ventilation
pressure . . . . . . . . . . . . . . . . . . . . 50
8.6 Checking Demandflow . . . . . . . . 51
8.7 Checking the alarm systems . . . . . 52
9. Troubleshooting . . . . . . . . . . . . 54
10. Servicing . . . . . . . . . . . . . . . . . . . 56
10.1 Batteries . . . . . . . . . . . . . . . . . . . 57
10.2 Change valve membrane in
patient valve . . . . . . . . . . . . . . . . 58
10.3 Storage . . . . . . . . . . . . . . . . . . . . 58
10.4 Disposal . . . . . . . . . . . . . . . . . . . 59
11. Product and accessories . . . . . . 60
11.1 Standard product . . . . . . . . . . . . . 60
11.2 Accessories . . . . . . . . . . . . . . . . . 60
11.3 Spare parts . . . . . . . . . . . . . . . . . 62
12. Technical data . . . . . . . . . . . . . . 63
12.1 Pneumatic / electronic systems . . . 65
12.2 Relationship between ventilation
parameters. . . . . . . . . . . . . . . . . . 66
13. Warranty . . . . . . . . . . . . . . . . . . . 67
14. Declaration of conformity . . . . 67
15. Index . . . . . . . . . . . . . . . . . . . . . . 68
Contents 3
EN
1. Overview
Stenosis
Disconnection
< 2,7 bar O
2
16
15
13
14
14
12
12
11
10
10
9
11
16
7
5
30
3
MV (l/min)
Freq.(min
-1
)
Demandflow
60
mbar
50
40
30
20
10
0
MEDUMAT
Easy
A
2
5
4
3
9
8
6
1
7
1.1 Device
4 Overview
EN
B
10
14
13
11
12
15
C
16
17
19
20
18
21
or
Overview 5
EN
1.2 Special symbols on the ventilator
Position
> PSU< 134°
Patient valve
The symbol on the patient valve is a reminder
that the lip membrane must be changed immediately if it becomes crinkled, sticky or misshapen. The patient must not be used again until the membrane has
been changed, as this could cause malfunction (see
“8.3 Checking patient hose system” on page 48).
The symbol indicates the correct position for
insertion of the lip membrane.
When connecting the patient valve, take care to ensure that the direction of respiratory gas flow is correct (see arrows).
6 Overview
EN
MEDUMAT Easy
5678
3
2
1
4
+–
1 Inlet 2,7 - 6 bar O
2
2 Languages available on this device
MEDUMAT Easy device information plate
SN
Serial number of device
Year of manufacture
3.6 V lithium battery
Direct voltage
3
IP54
CE symbol (confirms that the product conforms to the
applicable European directives)
Protection against ingress of water
Protection class BF
Do not dispose of device in domestic waste
Overview 7
EN
4 Follow instructions for use
5 Tube system connection
6 Maximum pressure ≤100 mbar
Safety check and servicing label
Safety check label: (in Germany only) marks when the next
7
8 Servicing label: indicates when the next service is due.
safety check as per §6 of the German law relating to users of
medical devices is required.
8 Overview
EN
2. Legend
A: MEDUMAT Easy control panel
1 Mask/tube ventilation switch with indicator LEDs
2 Ventilation pressure gauge
3 Alarm panel
4 Alarm mute button
5 Colour code
6 Regulator knob, ventilation parameters
7 Stop notch
8 LED Demandflow
9 ON/OFF switch
B: MEDUMAT Easy connections
10 Pressurized gas connection
11 Battery compartment
12 Speaker
13 Pressure gauge hose connection
14 Ventilation hose connection
15 Relief outlet valve
C: MEDUMAT Easy device combinations
16 Ventilation mask
17 Ventilation hose
18 Filter
19 Patient valve
20 PEEP valve
21 Tube
Legend 9
EN
3. Description
3.1 Intended use
MEDUMAT Easy is an automatic oxygen respiration
device (short-term ventilator) with additional inhalation facility.
You can use MEDUMAT Easy:
• to revive patients at the site of the emergency;
• for longer periods in more protracted
emergencies;
• for short-term O
mask.
You can use MEDUMAT Easy while transporting
patients:
• between the various rooms and departments of
a hospital;
• between the hospital and other premises;
• in emergencies;
• when transport over considerable distances is
planned.
MEDUMAT Easy:
• is designed to provide controlled ventilation to
persons of 10 kg body weight or more;
• is used to treat respiratory arrest;
• can be preset to parameters that ensure evenly
balanced ventilation, provided that the selected
maximum ventilation pressure P
exceeded.
inhalation using a respiration
2
is not
max
10 Description
EN
• permits respiration-controlled oxygen inhalation
16
15
13
14
14
12
12
11
10
10
9
11
16
7
5
30
3
MV (l/min)
Freq.(min
-1
)
Demandflow
10
0
in Demand mode.
3.2 Owner/operator and user qualification
As an owner/operator or user, you must be familiar
with the operation of this medical device. Observe
the legal requirements for operation and use (in Germany, the regulations governing owner/operators of
medical devices apply in particular). Basic recommendation: get a person authorized by WEINMANN
Emergency to provide you with proper instruction
about the handling, use and operation of this medical device.
3.3 Ventilation function
MEDUMAT Easy operates within a pressure range of
2.7 to 6 bar and at a flow rate of not less than
70 l/min O
It uses high-pressure, medicinal-grade oxygen. An
external pressure reducer brings this down to the required operating pressure. The oxygen supply is fed
in at input valve.
The ventilation settings are continuously variable.
These settings (frequency and volume per minute
are coupled) and the inspiration/expiration ratio of
1:1.67 are regulated by internal electronic control
mechanisms.
The gas for inspiration flows along the hose and
through the patient valve and either the mask or
tube into the patient’s airways. The patient valve is
. It has a built-in power pack.
2
Description 11
EN
fitted with a lip membrane that enables expired gas
9
60
mbar
50
40
30
20
10
0
16
15
13
14
14
12
12
11
10
10
9
11
16
7
5
30
3
MV (l/min)
Freq.(min
-1
)
Demandflow
10
0
Demandflow setting
Respiration hose connection
Expiration
tube
Connection
for pressure
gauge tube
Mask/tube
connection
Spontaneous
breathing tube
to be conducted away through the expiration tube.
You can check the course of ventilation at ventilation
pressure gauge.
3.4 Demandflow function
The Demandflow setting switches the
MEDUMAT Easy breathing-controlled O
Such inhalation must be carried out with the respiration mask. A small inspiration (trigger) pulse causes
oxygen to continue flowing until slight overpressure
interrupts the flow. Expiration then takes place via
the patient valve as in ventilation.
inhalation.
2
3.5 Patient hose system with patient valve
The respiratory gas is routed to the patient via the
patient hose system with patient valve. The patient
hose system with patient valve is designed so that
even if the ventilator fails, spontaneous breathing is
possible, regardless of which ventilation mode you
have selected.
12 Description
EN
3.6 Audio response
The device has an audio response facility that can be
switched on for user guidance, especially for users
who have little practice.
If audio response is not required, a key combination
can be used to switch it off (see “6.10 Audio response for user guidance” on page 32).
Description 13
EN
4. Safety instructions
4.1 Safety regulations
For your own safety, the safety of your patients, and
to comply with the requirements of EU Directive 93/
42/EEC, please observe the following points:
General
• Please read the directions for use carefully. They
are an integral part of the ventilator and must be
kept available for reference at all times.
• Use the MEDUMAT Easy for the described purpose only (see “3.1 Intended use” on page 10).
• The user must subject the patient hose system to
a functional check and a visual inspection before
use (see “8.3 Checking patient hose system” on
page 48).
14 Safety instructions
Note: • Do not use the MEDUMAT Easy in toxic environ-
ments or where there is a risk of explosion.
• MEDUMAT Easy is not suitable for hyperbaric
use (pressure chamber).
• Do not use MEDUMAT Easy with flammable
anesthetics.
• A back-up ventilator should always be available
in case of technical failure.
• Before starting to work with MEDUMAT Easy,
you must understand how to operate it.
• To prevent infection or bacterial contamination,
please observe section “7. Hygienic preparation” on page 40.
EN
• MEDUMAT Easy should be used only by medically qualified personnel who have had training
in ventilation techniques. Incorrect use can cause
severe physical injury.
• Please note that a safe distance must be maintained between MEDUMAT Easy and equipment
that emits HF radiation (e.g. mobile phones),
otherwise malfunctions may occur (see “ Recommended safe distances between portable or
mobile HF telecommunication devices (e.g. mobile phones) and MEDUMAT Easy” on page 64).
• We recommend that maintenance work such as
inspections and repairs be performed only by the
manufacturer, WEINMANN Emergency, or by
qualified technicians expressly authorized by
WEINMANN Emergency.
• Malfunctions and a lack of biocompatibility may
result if third-party articles are used. Please note
that in such cases all warranty entitlement and liability claims shall be void where items other
than the accessories recommended in the instructions for use or original spare parts are
used.
• Design changes to the device are not permitted
and may put patients and users at risk.
Oxygen
Spontaneous explosive reactions can occur if highpressure oxygen comes into contact with flammable
substances (fat, oil, alcohol etc.):
• Keep the equipment and all screw connections
absolutely free from oil and grease.
• Always wash your hands before starting to work
on the oxygen supply.
Safety instructions 15
EN
• Smoking and open flames are strictly prohibited
in the vicinity of all fittings containing or transporting oxygen.
• During assembly and when changing the oxygen
cylinder, only hand pressure should be used
when tightening the screw connections to the
cylinder and to the pressure reducer. Never use
tools for this purpose. Excessive tightening damages the screw threads and seals, and can cause
leaks.
• Protect oxygen cylinders from accidental falls. If
a cylinder falls over, the pressure reducer or the
valve may break off and cause a violent explosion.
Important • Always open the valve of the oxygen cylinder
slowly to prevent pressure damage to the other
fittings.
• The oxygen cylinder should never be completely
emptied, as this may allow air containing moisture to enter the cylinder and cause corrosion.
Ventilation/Operation
16 Safety instructions
• Both patient and ventilator must be kept under
constant observation during ventilation.
• When connecting the patient valve, please ensure that the direction of respiratory gas flow
(> patient >) is correct. Make sure that neither
the expiration tube nor the spontaneous breathing tube on the patient valve are blocked or their
function impeded in any other way, e.g. by the
patient’s position.
Note: • Disposable hose system WM 28110 is intended
to be used only once.
EN
Software
• Extensive validation tests have been performed
to minimize risks arising from software errors.
Accessories
• Please protect the silicone and rubber components from UV radiation and prolonged exposure to direct sunlight, as this can make them
brittle and friable.
Safety instructions 17
EN
5. Installation
A permanent mounting is usually necessary only
when MEDUMAT Easy is installed as a fixture in rescue vehicles, helicopters or aircraft.
If MEDUMAT Easy is supplied complete on a portable system or in an emergency rucksack, it is ready
for use and requires no further installation. Separate
directions for use are supplied for portable systems
and emergency rucksacks.
In order to ensure safe and reliable operation, functional tests must be carried out after installation (see
“8. Functional checks” on page 45).
5.1 Connecting the oxygen cylinder
Always wash your hands thoroughly before starting
any work on the oxygen supply. Products containing
hydrocarbons (e.g. oils, greases, alcohols, hand
creams, sticking plasters) may cause explosive reactions if they come into contact with high-pressure oxygen.
18 Installation
Never use wrenches or similar tools to tighten or
loosen the screw connections.
Removing the empty cylinder
1. Close the valve of the oxygen cylinder.
Switch on MEDUMAT Easy with ON/OFF switch.
This exhausts any residual oxygen and depressurizes the ventilator. Wait until the pressure
gauge on the pressure reducer shows an oxygen
content of zero before undoing the screw connection by hand.
EN
2. First switch off MEDUMAT Easy again.
3. Then loosen the screw connection to the
cylinder.
Connecting the new cylinder
1. First briefly open and close the valve of the new
oxygen cylinder. This should blow out any particulate matter.
Keep the valve opening away from the body,
making sure that neither yourself nor other persons can be injured by escaping particles.
2. Next use the fluted connecting nut to couple the
pressure reducer to the valve on the oxygen cylinder. Tighten the connecting nut by hand.
3. If the pressure hose is not already connected to
the exit from the pressure reducer, make this
connection with the G 3/8 connecting nut.
4. Screw the other end of the pressure hose on to
pressure gas connection on the MEDUMAT Easy
if this has not yet been done.
5.2 Ventilation hose
1. Slide the pressure gauge tube onto connection.
2. Slide the ventilation hose onto connection.
Make sure that this does not cause any kinks in
the pressure gauge tube already connected. If
necessary, turn the ventilation hose while sliding
on as appropriate.
Installation 19
EN
Always grasp the ventilation hose and
P
o
s
i
ti
on
>
P
S
U
< 13
4°
pressure gauge tube by their end only,
otherwise they may be damaged or split.
3. Connect the patient valve to the other end of the
ventilation hose and pressure gauge tube.
4. If a mask is being used for ventilation, attach the
mask connection to the patient valve (identical
with tube connection),
or
if the patient is intubated, attach the patient
valve to the tube.
20 Installation
Filter
If a filter is to be used, this should be installed
between the patient side connector on the patient
valve and the mask or tube.
Always follow the instructions supplied by the
manufacturer of the filter.
EN
Note: Please note that the respiratory resistance of the
entire system is increased when an HME filter or bacteria filter is used and under certain circumstances,
may exceed the value permitted by EN 794-3.
PEEP valve
If a PEEP valve is to be used, this should be inserted
into the expiration tube on the patient valve.
To adjust the PEEP valve, always follow the instructions supplied by its manufacturer.
5.3 Wall mounting set
A wall mounting set (see “11.2 Accessories” on
page 60) is available for permanent fixing, e.g. on a
vertical surface inside a vehicle.
Please refer to the sheet enclosed with the wall
mounting set for details of dimensions and installation procedure.
Installation 21
EN
6. Using the ventilator
6.1 Switching on / self test
1. Open the valve of the oxygen cylinder slowly.
The pressure gauge will now show the pressure
in the cylinder.
2. Where appropriate, calculate how long the remaining oxygen will last (see “6.11 Calculation
of oxygen content/remaining operating time”
on page 37). Always change the cylinder in good
time, e.g. when the pressure is lower than
50 bar, to ensure that oxygen is available for an
adequate period.
3. Select the desired ventilation settings (see “6.2
Selecting the ventilation settings” on page 23).
4. Switch on the MEDUMAT Easy with ON/OFF
switch. The ventilator will then run a self test
lasting approx. 2 seconds.
If audio response is enabled, you will hear before
the self test the sentence “Open oxygen cylinder”.
22 Using the ventilator
EN
During this test, the four LEDs in alarm panel 3
flash on and off and a short alarm tone sounds.
Stenosis
Disconnection
< 2,7 bar O
2
If an error is found, all the LEDs in alarm panel
continue flashing and an alarm sounds. If this happens, MEDUMAT Easy must not be used for ventilation.
If audio response is enabled, you will hear the
message “Device malfunction! Administer alternative ventilation”.
After the self test, the ventilator repeatedly
checks the oxygen cylinder pressure until adequate pressure is detected. Otherwise an alarm is
sounded.
The MEDUMAT Easy will then start to function
with the selected ventilation settings.
6.2 Selecting the ventilation settings
We recommend selection before switching on, to
prevent unnecessary waste of oxygen.
3
Respiratory frequency and minute
volume
12
11
9
10
14
12
10
15
13
7
11
14
30
3
Freq.(min
MV (l/min)
16
Demandflow
-1
)
16
5
13
14
1,1
0,6
0,3
1. Set the respiratory frequency and the minute
volume with regulator knob.
Recommended ventilation settings:
yellow orange brown
Body weight 10 kg 30 kg 60 kg 80 kg 110 kg
Respiratory
frequency
Minute
volume
-1
30 min
16 min-111 min-110 min-110 min
3 l/min 5 l/min 7 l/min 9 l/min 11 l/min
Using the ventilator 23
-1
EN
The figures shown in the table are only recommendations. Different settings may be required
in cases of pulmonary damage or for special indications.
To see the relationship between the values, see
diagram “12.2 Relationship between ventilation
parameters” on page 66.
Maximum ventilation pressure
1. Use the mask/tube switch to set the maximum
ventilation pressure. The LEDs light up in active
mode.
Recommended maximum ventilation pressure:
Device
Audio response up
to serial number
7999
From serial number
8000 and following
repair/servicing/
firmware update
Mask ventilation
20 mbar 45 mbar
Audio response
enabled: “Mask
ventilation mode. Tilt
back head, secure
mask tightly”
Audio response
enabled: “Ventilation
pressure limit
20 mbar”
Intubation
Audio response
enabled: “Tube
ventilation mode.
Ventilation pressure
limit 45 mbar”
Audio response
enabled: “Ventilation
pressure limit
45 mbar”
24 Using the ventilator
If the maximum level is reached, e.g. in cases where
compliance is inadequate, MEDUMAT Easy sets off a
stenosis alarm (see “ Stenosis alarm” on page 30).
Note: The mask/tube switch can only be operated when
the ventilator is switched on.
EN
6.3 Performing ventilation
P
o
s
i
ti
on
>
P
S
U
< 13
4°
9
60
mbar
50
40
30
20
10
0
Ventilation mask
1. Attach the mask to the patient valve.
2. If necessary, insert a Guedel tube to keep the
airways open before putting on the mask.
3. Place the mask over the patient's mouth and
nose.
4. Tilt the head back and use the E-C technique
ensure the mask is hermetically sealed.
Intubation
The patient will normally be intubated before the
tube is connected to the patient valve.
1. Attach the patient valve to the connector of the
tracheal tube.
2. Monitor the respiratory parameters during ventilation. This will indicate whether the tube is correctly positioned and ventilation is adequate.
1)
to
6.4 Monitoring ventilation
The patient must be monitored constantly during
ventilation.
You can read off ventilation pressure on the ventilation pressure gauge.
High airway resistance, as a result of obstructions or
external cardiac massage for example, will change
1. See also: Resuscitation, Volume 46 (2000), Special Issue International Guidelines 2000 for CPR and ECC -
A Consensus on Science; p. 115-125.
Using the ventilator 25
EN
the tidal volume set. Use suitable volume measuring
Example of ventilation sequence before and after
lung compliance diminishes
devices to check the tidal volume actually administered.
Check respiratory parameters during ventilation.
If lung compliance diminishes during ventilation, the
ventilator will react by increasing the ventilation
pressure at constant volume.
6.5 Ventilation with PEEP valve
A PEEP valve can be fitted to the expiration tube on
the patient valve with an adapter.
This valve makes it possible to use positive end-expiratory pressure (PEEP).
Please see the PEEP valve instructions for details of
settings.
6.6 Ventilation with filter
A conventional filter with standard 15/
22 connectors can be fitted on the inspiration tube
of the patient valve for hygiene purposes and to condition the air for inspiration. This will increase both
26 Using the ventilator
EN
13
14
0,3
0,6
1,1
16
15
13
14
14
12
12
11
10
10
9
11
16
7
5
30
3
MV (l/min)
Freq.(min
-1
)
Demandflow
6.7 Demandflow
Note: A PEEP valve must not be fitted when using the
inspiratory and expiratory resistance. You should
therefore monitor ventilation pressure and ventilation volume very carefully.
A close watch must be kept for any increase in dead
space, especially in children.
Always be sure to follow the instructions supplied by
the manufacturer of the filter.
ventilator in Demandflow mode.
Demandflow must be switched on for O
inhalation.
2
To switch the MEDUMAT Easy to Demandflow
mode, turn the ventilation settings regulator knob
until it engages in the fixed point marked by the
white triangle. The green LED indicates that it is
ready for operation. If audio response is enabled, the
ventilator announces “Demandflow mode”.
Attach the mask to the patient valve and place it over
the patient’s mouth and nose. Hold the mask to ensure a firm seal. The flow is switched on by the patient breathing in (triggering the device). When the
patient starts to breathe out, the flow stops and the
expired air is removed via the patient valve. The patient should breathe calmly and evenly. The Demandflow cannot be altered. At higher breath rates, fresh
air is automatically mixed in with the oxygen. This is
done via the spontaneous breathing tube of the
patient valve.
The Demandflow mode is ended by turning the regulator knob back to ventilation mode from the index
Using the ventilator 27
EN
position marked by the white triangle, or by switching off the ventilator.
If audio response is activated, the ventilator confirms
the return to ventilation mode by announcing:
“Mask ventilation mode. Tilt back head, secure mask
tightly” (from serial number 8000 and following repair/servicing/firmware update: “Ventilation pressure limit 20 mbar”).
6.8 Terminating ventilation or Demandflow
Important
Never empty the oxygen
cylinder completely. Return the cylinder for filling
while it still contains residual pressure. This prevents
entry of moist atmospheric
air that can cause
corrosion.
1. Check the oxygen supply on the pressure reducer gauge. Always change the cylinder in good
time, e.g. when the pressure is lower than
50 bar, to ensure that oxygen is available for an
adequate period.
2. Close the valve of the oxygen cylinder.
3. Switch off the MEDUMAT Easy. To prevent the
ventilator being switched off unintentionally, ON/
OFF switch must be kept pressed down for at least
2 seconds until the LEDs in the alarm panel
3 light
up. If audio response is enabled, the ventilator announces: “Close oxygen cylinder”.
28 Using the ventilator
EN
6.9 Alarm signals
Stenosis
Disconnection
< 2,7 bar O
2
+–
Alarm panel signals the following alarms:
Stenosis: Stenosis, or maximum ventilation
pressure P
reached in two succes-
max
sive inspiration phases
Disconnection:Disconnection between
MEDUMAT Easy and patient in two
successive inspiration phases
< 2.7 bar: Drop in oxygen pressure to below
2.7 bar
: Battery charge inadequate
All the visual alarms are accompanied by an acoustic
alarm.
If the ventilator detects a malfunction during the self
test after switching on or during continuous operation, all LEDs in the alarm panel stay flashing on and
off, and an alarm tone sounds. If audio response is
enabled, you will hear the message “Device malfunction! Administer alternative ventilation”.
In this case you must not use the MEDUMAT Easy.
The failure alarm can be confirmed by pressing the
ON/OFF switch.
The patient valve is designed to enable spontaneous
breathing in the event of equipment failure.
When is the alarm set off?
An alarm signal is given as soon as any one of the
functional problems mentioned above occurs. The
relevant LED starts flashing and an acoustic signal
sounds. If audio response is enabled, the user also
hears additional information about the individual
alarm.
Using the ventilator 29
EN
Simultaneous disconnection and drop in oxygen
pressure will initially set off only the < 2.7 bar alarm.
Stenosis alarm
Actual ventilation pressure exceeds the maximum
ventilation pressure (20 or 45 mbar).
MEDUMAT Easy briefly switches to expiration if the
maximum ventilation pressure is exceeded, but then
tries to continue inspiration in the same inspiration
phase.
If the maximum ventilation pressure is exceeded for
a second time during the same inspiration phase, the
unit finally switches to expiration and vents the patient tube system completely. The next inspiration
begins with the following ventilation stroke according to the frequency selected. This does not affect
the set frequency.
The alarm is set off if airway resistance is exceeded
in
two successive inspiration phases. This is intended
to prevent false alarms, e.g. due to coughing.
If audio response is enabled, the unit announces
“Check airways and minute volume” (from serial
number 8000 and following repair/servicing/firmware update: “Check airways and settings”).
30 Using the ventilator
Disconnection alarm
As a rule this alarm is due to interruption of the
breathing system.
The alarm is set off when the rise in pressure fails to
reach at least 8 mbar in
phases.
If audio response is enabled, the unit announces
“Check ventilation system and settings”.
two successive inspiration
Loading...