Maestro 4000
™
Cardiac Ablation System
Maestro Diagnostic Messages
Measured impedance below the low impedance
threshold of 25
Ω
when using a high power
catheter, or 50
Ω
for all other catheters.
• Press RF Power button to clear the Diagnostic
code.
• Check all connections while monitoring the
real-time Impedance on the alphanumeric
display.
• Replace components that appear damaged.
• Resume RF delivery once the real-time
Impedance value is above the Low Impedance
threshold.
Measured Impedance value is above the user
defined set point between 150
Ω
to 300
Ω
.
Press RF Power button to clear the Diagnostic
code. Ensure that the Impedance set point is above
the appropriate Impedance value. Check the real-
time Impedance display. If not below desired set
point go through the following steps:
1. Ensure that the in-vivo catheter is connected
to the appropriate extension cable – a list of
catheter to cable pairings can be found in the
catheter DFU.
2. Check all connections while monitoring real-
time Impedance on the alphanumeric display.
Begin with connections outside the sterile
field (DIP connection to POD, extension Cable
to POD). Finally verify good patient to DIP
Electrodes surface contact.
3. If unsuccessful then replace components one
at a time with new components. (catheter
extension cable, DIP electrodes, POD if
available, catheter).
Diagnostic Codes are displayed on the Alphanumeric Display. They indicate a condition that must be investigated before proceeding.
If the Maestro is delivering RF energy when a diagnostic condition occurs, RF Delivery is terminated. To clear a Diagnostic Code,
resolve the problem, then press the RF Power Button. Some diagnostic codes will require that the error be cleared prior to resolving
the issue (eg. Low/High Impedance) in order to monitor the real time display. Below is a sampling of codes and corrective actions.
All codes and complete operating instructions are in the Maestro Operator’s Manual.
Alphanumeric Display
D01-LOW IMPEDANCE
D02-HIGH IMPEDANCE
The Voltage, Current or Power has exceeded maximum
values.
• Restart Maestro 4000.
• If error recurs and only 1 DIP electrode is in use,
apply a 2nd Electrode to patient.
• Contact Boston Scientific.
Measured catheter tip temperature is at least 5°C
greater than the set point for more than 4 seconds.
• Press RF Power button to clear the Diagnostic
code.
• Verify normal body temperature reading from the
in vivo catheter.
• Verify that an appropriate Temperature set point,
Power set point and Control Mode is selected for
the desired catheter.
• Restart the Maestro 4000 using the main switch.
• Ensure that the POD is not covered, has adequate
ventilation and is not exposed to heat or cold
sources.
Measured catheter tip temperature greater than 95°C
for more than one second, or measured temperature
exceeds set point temperature in Power Control mode.
• Press RF Power button to clear the Diagnostic
code.
• Verify normal body temperature reading from the
in-vivo catheter.
• Verify that an appropriate Temperature set point,
Power set point and Control Mode is selected for
the desired catheter.
• Restart the Maestro 4000 using the main switch.
• Ensure that the POD is not covered, has adequate
ventilation and is not exposed to heat or cold
sources.
D03-LIMIT EXCEEDED
D04-TEMP ABOVE SET POINT
D05-EXCESSIVE TEMPERATURE
Cause:
Action:
Cause:
Action:
Cause:
Action:
Cause:
Action:
Cause:
Action:
37
IntellaTip MiFi
™
XP
Temperature Ablation Catheter
System Set Up with Stockert EP-Shuttle RF Generator
Maestro 4000
™
Cardiac Ablation System
Maestro Diagnostic Messages
36
