Maestro 4000
™
Cardiac Ablation System
Maestro Operational Messages
This message is displayed in temperature control mode
when the delivered power reaches the power set point
value. It indicates that the temperature set point cannot
be reached at the current power level.
• Reduce temperature set point or increase power
set point, as appropriate.
Maestro 4000 limits the amount of current through a
single dispersive pad to prevent burns to the patient.
This message is displayed periodically while power
is limited. The limit may be reached if a high power
catheter is used with a single dispersive pad.
• If using a high-powered catheter with a single
Dispersive Indifferent Patch (DIP), add a 2nd DIP if
additional power is required.
• Monitor the real-time impedance display. If imped-
ance is below the expected range, replace compo-
nents one at a time with new components. (catheter
extension cable, DIP electrodes, POD if available,
catheter).
This message indicates a higher than expected imped-
ance. Higher than typical impedance measurements
may indicate a faulty DIP application or failure of an
electrical lead.
Check real-time Impedance value. If it’s above expected
impedance 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’s 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). 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)
This message indicates a normal condition. It is
displayed during an open-irrigated ablation sequence
while the pump delivers fluid at the ablation flow rate
during pre-RF and post-RF delay.
• Wait for MetriQ Pump to complete pre-RF delay
or post-RF delay (or adjust the delay duration on
MetriQ Pump as appropriate).
This message is displayed when RF power is requested
but the MetriQ’s menu is open (when Maestro 4000 is
operating with MetriQ Pump in Automatic mode). RF
delivery is prevented until the pump menu is closed.
• Close the pump menu before requesting RF Power
delivery.
This message indicates a normal condition. It is dis-
played if RF power is requested and the time setting
has not been changed from the default 0 seconds.
• Adjust time setting to an appropriate value
before requesting RF delivery.
This message indicates a normal condition. It is dis-
played when RF power is requested but the power
setting has not been changed from the default 0 Watts.
• Adjust power setting to an appropriate value
before requesting RF delivery.
Operational Codes are displayed on the Alphanumeric Display. Operational Codes explain Maestro 4000 behavior or indicate a non-
hazardous condition that may require action. Below is a sampling of codes and suggested actions. A complete description of all codes
and complete operating instructions are in the Maestro 4000 Operator’s Manual.
Alphanumeric Display
M02-POWER LIMITED, POWER SETTING
M04-POWER LIMITED, HIGH IMPEDANCE (Cont.)
M05-WAIT FOR PUMP
M03-POWER LIMITED, LOW IMPEDANCE
M04-POWER LIMITED, HIGH IMPEDANCE
M06-CLOSE PUMP MENU
M07-SET TIME
M08-SET POWER
Cause:
Action:
Action:
Cause:
Action:
Cause:
Action:
Cause:
Action:
Cause:
Action:
Cause:
Action:
Cause:
Action:
39
IntellaTip MiFi
™
XP
Temperature Ablation Catheter
System Set Up with Stockert EP-Shuttle RF Generator
Maestro 4000
™
Cardiac Ablation System
Maestro Operational Messages
38
