Tafonius
Auxiliary Mode Operating Manual
Printed: 28/Feb/11
Page 8 of 15
DOCA4956
Initialising the Piston
As stated, before Tafonius can be used the system needs to locate the zero position, the
bottom of travel, of the piston.
The RUN button will be flashing, after the boot sequence, while waiting for the user. Make
sure there is nothing attached to the Y-piece before pushing RUN the button. Once the
button is pushed the screen shows the message
MOVING PISTON TO ZERO.
During this
piston movement the airway pressure is monitored. If there is a patient attached or an
obstruction to airflow then the following message appears:
ERROR. PRESSURE TOO HIGH
DISCONNECT PATIENT
THEN PUSH RUN BUTTON
Clear the obstruction or remove the patient before continuing. There are 2 other possible
reasons why the initialisation procedure may be interrupted: The first is that the cylinder is
not closed properly. The second is that the vacuum surrounding the piston is too low. In
either of these instances warning messages will appear alerting you to the cause and
remedy of the interruption. Once the piston reaches the bottom of its travel, a zero reading
is taken and
ZEROING PISTON POSITON
is displayed briefly. Three beeps are heard and
the control screen is displayed, see below. The piston is at the very bottom waiting for the
user to pre-fill the system with oxygen and anaesthetic for induction.
Tafonius
is ready
for use in its Auxiliary Mode.
The Control Screen
Before continuing here is an explanation of what you see on the auxiliary screen. It is
divided into 4 main regions:
1) Status and message information
Area 1 shows status information on the system batteries, whether the machine is running on
mains or battery power, the software version, the vacuum level around the piston and also
2
1
3
4
1) Status and message information
2) Piston Graphic and information
3) Resultant Ventilation values
4) Patient Ventilator settings &
Measured values
