4
17
● Insert the new battery over the tab, ensuring that it is in the
correct position (see Fig. 19).
● Twist the new battery in the battery recess to obtain the
best contact.
● Close the battery flap (see Fig. 20).
● Check the voltage indication.
9.3 Checking the impulse succession
● Slowly open the cylinder valve (5).
● Put on the oxygen nasal cannula (7).
● Turn on OXYTRON
2 (switch setting 4).
● Put OXYTRON
2 into operation by inhaling through the
nose. Each breath must trigger an oxygen impulse.
● Repeat the procedure for switch settings 3, 2 and 1.
OXYTRON
2 must switch as follows:
The oxygen passes through the spiral hose (20) or the alterna-
tive straight hose (19) to the OXYTRON
2 (6), from which it
passes in impulses through the oxygen nasal cannula (7),
adapted to the OXYTRON
2, to the patient.
At the beginning of inhalation, the patient triggers an
electronic/pneumatic control impulse in the OXYTRON
2, via
the oxygen nasal cannula, which opens the solenoid valve for a
fraction of a second and releases app. 35 ml oxygen for
inhalation. This small amount of oxygen is sufficient to cover
the patient’s oxygen deficit, since only the oxygen taken at the
beginning of inhalation reaches the alveolae and hence the
patient’s blood. The function of OXYTRON
2 is based on this
physiological fact.
OXYTRON
2 offers four switching variations with which the
frequency of oxygen supply (impulse succession) is set on the
instrument. These switch settings approximately correspond to
the constant oxygen dosages of 1 to 4 l/min.. For example, the
doctor prescribe 2 l/min., switch setting "2" should be choosen,
whereby the patient receives oxygen every second inhalation
impulse. The following impulse rhythms are valid for switch
settings 1, 2, 3 and 4:
OXYTRON
2 Breath with oxygen supply
switch setting and
without oxygen supply
indication l/min. 1. 2. 3. 4.
1
2
3
4
The patient must inhale through the nose only so that
OXYTRON
2 switches the intervals correctly.
An audible alarm sounds if OXYTRON
2 does no longer register
any inhalation impulse. The red alarm indicator (14) starts
flashing additionally.
By pressing the switch (10) in the "BATT" setting, the operating
condition of the OXYTRON
2 battery is displayed and checked
on the voltage indicator (13).
Important Note
To ensure satisfactory functioning of the OXYTRON
2, use only
the OXYTRON
2 pressure reducer, hoses and oxygen nasal
cannulas supplied with the instrument. In case that commercial
oxygen nasal cannulas are fitted with a hose length up to 2.5 m,
please use the OXYTRON
2 Accessory-Set connecting nozzle
WM 15135.
OXYTRON
2 Breath with oxygen supply
switch setting and
without oxygen supply
indication l/min. 1. 2. 3. 4.
1
2
3
4
● Turn off OXYTRON
2.
● Close the cylinder valve (5).
● Depressurize the instrument (see point 6.7 "After use").
9.4 Checking the alarm
● Turn on OXYTRON
2, trigger at least one oxygen-impulse
by inhaling and wait.
● The first audible alarm sounds after app. 45 seconds.
● The audible alarm must sound again after app. 15 seconds.
● The red alarm indicator flashes between the audible alarm.
● Turn off the instrument.
Fig. 20
