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CODFR06058xx01v10.qxd
3/8/07
Switching to a New Patient Monitor
The following instructions describe the procedure for switching the
ICP EXPRESS Monitor to a new patient monitor while patient monitoring is
in progress (Example: ICP EXPRESS Monitor was originally set-up with a
patient monitor in the operating room. Patient is now being moved to the
intensive care unit where the ICP EXPRESS Monitor must be connected to
a new patient monitor).
1. Disconnect the CODMAN Patient Monitor Interface Cable from the original
patient monitor.
2. If the original Patient Monitor Interface Cable is not compatible with the
new patient monitor (i.e., the new patient monitor is of different make and
model from the original patient monitor) disconnect the cable from the rear
panel of the ICP EXPRESS Monitor and replace it with the appropriate
compatible cable. CAUTION: Use CODMAN Patient Monitor Interface
Cables only with the patient monitor for which they are specifically
designed and designated.
3. Verify that the sensitivity selection switch on the rear panel of the
ICP EXPRESS Monitor is set to the correct position, according to the
sensitivity of the new patient monitor. The sensitivity is preset to the
5 µV position at the time of manufacture. CAUTION: The rear panel
sensitivity selection switch must be set in the appropriate position
prior to connecting to the patient monitor. Do not adjust the sensitivity
selection switch while connected to a patient monitor, as inaccurate
pressure readings may result.
4. Connect the Patient Monitor Interface Cable to the appropriate pressure
channel input on the new patient monitor.
5. Follow the instructions for Zeroing and Calibrating the new patient
monitor as previously described in the Operating Instructions section.
Switching to a New ICP EXPRESS Unit
The following instructions describe the procedure for switching the patient
to a new ICP EXPRESS unit while patient monitoring is in progress (i.e.,
patient was originally set-up with an ICP EXPRESS unit in the operating
room. Patient is now being moved to the intensive care unit where the
original ICP EXPRESS Monitor will be exchanged with a new unit dedicated
to the ICU).
1. Disconnect both the Patient Monitor Interface Cable and the
ICP EXPRESS Cable from the front and rear panel receptacles of the
original ICP EXPRESS Monitor.
2. Reconnect both cables to the new ICP EXPRESS Monitor. If the
ICP EXPRESS Monitor is also being connected to a new patient monitor,
verify that the Patient Monitor Interface Cable is appropriate for the new
patient monitor.
3. Follow the instructions for Zeroing and Calibrating the patient monitor as
previously described in the Operating Instructions section.
4. The new ICP EXPRESS Monitor will prompt the user to ACCEPT or
ADJUST the zero reference value stored in the attached ICP EXPRESS
Cable. Compare the three digit zero reference value displayed on the screen
with the value previously recorded on the MicroSensor connector housing or
the patient's chart (the zero reference values should match if the original
ICP EXPRESS Cable has remained with the patient). If the values do match,
position the ICP EXPRESS Monitor screen cursor on the ACCEPT
REFERENCE option and press the
5. If the displayed zero reference value does not match the zero reference
value previously recorded on the MicroSensor housing or the patient's
chart, move the ICP EXPRESS Monitor screen cursor to the ADJUST
REFERENCE option and press the
to adjust the displayed zero reference value to match the zero reference
value recorded on the MicroSensor housing or the patient's chart, then
press the
key to enter the zero reference value. The new reference is
automatically updated in the ICP EXPRESS Cable memory.
Switching ICP EXPRESS Cables
Codman recommends that the ICP EXPRESS Cable used during the
original transducer zeroing procedure remain with the patient at all times.
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key to proceed.
key. Use the
or
keys
However, if replacement of the original cable is necessary, the following
procedure must be followed:
1. Unplug the original ICP EXPRESS Cable from the MicroSensor and
ICP EXPRESS Monitor. The ICP EXPRESS Monitor will display the
message "NO TRANSDUCER DETECTED (CHECK CONNECTIONS)".
2. Connect the new ICP EXPRESS Cable to the MicroSensor and
ICP EXPRESS Monitor. CAUTION: Verify ICP EXPRESS Cable integrity
prior to use. Do not use any cable that fails to meet the pin-to-pin
resistance or electrical leakage specifications.
3. If connected to a patient monitor, the ICP EXPRESS Monitor will prompt
the user to Zero and Calibrate the patient monitor as described in the
Operating Instructions section.
4. The ICP EXPRESS Monitor will prompt the user to ACCEPT or ADJUST
the zero reference value as read from the newly attached ICP EXPRESS
Cable. Since this is a new ICP EXPRESS Cable, the displayed zero
reference value will not match the zero reference value recorded on the
MicroSensor housing or the patient's chart. To adjust the zero reference
value, move the cursor to the ADJUST REFERENCE line and press the
key. Use the
or
to match the zero reference value recorded on the MicroSensor housing or
patient's chart, then press the
and proceed patient monitoring.
Setting Patient Monitor Sensitivity
The ICP EXPRESS Monitor is capable of interfacing with external patient
monitors having invasive piezoresistive pressure transducer sensitivities of
5 µV/Vex/mmHg or 40 µV/Vex/mmHg. Most patient monitors are designed
for a transducer sensitivity of 5 µV, therefore the sensitivity selection switch
on the rear panel of the ICP EXPRESS Monitor is pre-set to the 5 µV setting
at the time of manufacture. To change the monitor output signal to the
40 µV level (in order to interface with a monitor requiring a 40 µV transducer
sensitivity), insert a small flat head screwdriver into the slotted switch and
turn one position clockwise. To change back to the 5 µV setting, insert a
small flat head screwdriver and turn one position counterclockwise. See
Figure 5.
Battery Operation
The ICP EXPRESS Monitor is equipped with an internal battery which allows
the unit to operate for approximately three hours under its own power.
The battery is continuously charging whenever the ICP EXPRESS Monitor
is connected to the appropriate AC power supply, even when the operating
system is OFF. The BATTERY CHARGING indicator, located in the lower
right corner of the ICP EXPRESS Monitor front panel, illuminates to verify that
the battery is charging. Approximately 12 hours is required to recharge a fully
discharged battery. Less time is required to recharge the battery if it has not
been fully discharged. NOTE: The Battery Charging indicator will remain
lit even when the battery is fully charged.
The ICP EXPRESS Monitor switches to battery operation during a loss
of AC power without any effect on the operating mode. When less than
15 minutes of battery life remain, the BAT. LOW message is displayed in
reverse video in the bottom center portion of the screen. An audible tone
sounds once every minute to further alert the user of the low battery
condition. The user should connect the ICP EXPRESS Monitor to an
appropriate AC power supply as soon as possible once the low battery
alert is engaged. The ICP EXPRESS Monitor will automatically shut down
when the battery is fully discharged. If automatic shutdown occurs while
ICP monitoring is in progress, simply plug the ICP EXPRESS Monitor into
an appropriate AC power supply and press the
back on. The ICP EXPRESS Monitor will prompt the user to zero and
calibrate the patient monitor, and to verify the transducer offset of the
attached MicroSensor. NOTE: The HI and LO mean ICP alarms will
reset to the default values (HI: 20 mmHg; LO: 0 mmHg) after a battery
discharge shut down. The ICP EXPRESS Monitor should remain
connected to the AC power supply for at least 12 hours to fully recharge
the battery.
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keys to adjust the zero reference value
key to enter the zero reference value
key to turn the unit
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