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What This Guide Helps With
Troubleshooting helium supply, cylinder pressure, tubing, connector, or external pneumatic leak issues affecting AutoCAT 2 balloon pumping.
Step-by-Step Troubleshooting
Ensure Patient Safety First
Confirm whether the AutoCAT 2 is actively supporting a patient.
If the pump is in use and helium supply, balloon inflation, or pneumatic performance is unreliable, notify clinical staff immediately. Have an alternate verified intra-aortic balloon pump available or transfer support according to facility policy.
Expected outcome: Patient support is maintained before equipment troubleshooting begins.
If the patient cannot safely remain on the suspect pump, stop troubleshooting at the bedside, remove the device from clinical use when safe, and document the event.
Confirm the Reported Fault
Verify the exact complaint or alarm behavior reported by clinical staff.
Look for symptoms such as:
- Low helium or empty cylinder indication
- Helium leak alarm
- Repeated gas loss alarm
- Unable to build pressure
- Balloon not inflating consistently
- Weak or absent augmentation
- Pneumatic fault during startup or therapy
- Fault after transport or cylinder replacement
Expected outcome: The issue is confirmed as helium supply or pneumatic related, not a timing, ECG trigger, arterial pressure, or catheter positioning issue.
Check the Helium Cylinder Status
Inspect the helium cylinder installed in the AutoCAT 2.
Confirm that the cylinder is present, properly seated, and has adequate pressure.
Expected outcome: The pump has a usable helium source.
If the cylinder is empty, low, missing, or not seated correctly, replace or reseat it according to facility procedure. If the fault clears and the pump passes operational checks, stop troubleshooting and document the corrected helium supply issue.
Verify Cylinder Installation
Remove and reinstall the helium cylinder only if the device is not actively supporting a patient and it is safe to do so.
Check that the cylinder threads, valve area, seal, and seating surface appear clean and undamaged.
Expected outcome: The helium cylinder is correctly installed without obvious leakage at the cylinder connection.
If damage, cross-threading, poor seating, or leakage is found, remove the device from service until the cylinder connection can be evaluated.
Listen for Obvious External Leakage
With the pump powered and pressurized as appropriate, listen near the cylinder area, external gas fittings, and patient tubing connections for hissing or continuous gas escape.
Do not place your face near pressurized connections.
Expected outcome: No obvious external helium leak is present.
If a clear external leak is heard from a removable connection, correct the connection if safe. If the leak persists, remove the device from service.
Inspect the IAB Catheter Connection
Check the connection between the AutoCAT 2 and the intra-aortic balloon catheter tubing.
Confirm that the connector is fully seated, secure, and not cracked, loose, kinked, contaminated, or partially disconnected.
Expected outcome: The catheter connection is intact and capable of maintaining helium pressure.
If a loose or poorly seated external connection is found and correction clears the alarm, stop troubleshooting and document the connection issue.
Inspect External Tubing
Examine the external balloon drive tubing from the pump connection to the catheter connection.
Look for:
- Kinks
- Pinches
- Cracks
- Loose fittings
- Stretched tubing
- Fluid contamination
- Damage from transport or bed rail contact
Expected outcome: Tubing is intact and unobstructed.
If damaged tubing or a compromised connector is found, replace the appropriate external accessory if allowed by facility policy. If the issue clears after replacement and testing, stop troubleshooting.
Check for Fluid or Blood in the Gas Path
Inspect the external catheter tubing and connectors for fluid, blood, or condensation where visible.
Expected outcome: The pneumatic pathway appears dry and clear.
If blood or fluid is visible in the gas line, do not continue using the pump. Notify clinical staff immediately, remove the device from service when safe, and escalate according to facility policy. This may indicate catheter or balloon integrity concerns.
Confirm the Correct Catheter Setup
Verify that the connected IAB catheter and tubing setup are compatible with the AutoCAT 2 and that the catheter size or setup entered into the pump matches the clinical configuration, if applicable.
Expected outcome: The pump is configured for the connected catheter setup.
Incorrect setup can cause abnormal fill behavior, low augmentation, or pneumatic alarms that appear to be equipment faults.
Check for Recent Transport or Movement
Ask whether the fault started after moving the pump, changing rooms, replacing the cylinder, repositioning the patient, or adjusting the bed.
Inspect connections that may have been pulled, bumped, or strained during movement.
Expected outcome: Movement-related disconnections or tubing strain are ruled out.
If reseating an external connection resolves the issue, stop troubleshooting and document the corrected connection.
Power Cycle Only When Safe
If the pump is not connected to a patient, power the AutoCAT 2 off and restart it from a known safe condition.
Observe whether the helium or pneumatic fault returns during startup or self-check.
Expected outcome: The device completes startup without recurring helium or pneumatic alarms.
If the fault returns during startup with a known good cylinder and external tubing removed or verified, suspect an internal pneumatic issue.
Perform a Controlled Operational Check
When the device is off the patient and safe to test, perform a normal operational check using approved test accessories or facility-approved setup.
Confirm that the device can pressurize, cycle, and maintain expected pneumatic operation without repeated helium alarms or leak messages.
Expected outcome: The AutoCAT 2 operates normally without helium loss or pneumatic fault.
If the device cannot maintain pressure, repeatedly alarms, or shows inconsistent pneumatic operation, remove it from service.
Do Not Perform Internal Pneumatic Repair at the Bedside
Do not open the device, bypass pneumatic safeguards, adjust internal regulators, or attempt internal valve or drive-system repair during troubleshooting.
Expected outcome: Troubleshooting remains limited to safe, external, Clinical Engineering checks.
Internal pneumatic faults require bench evaluation or qualified repair.
If the Problem Persists
If the helium cylinder, cylinder seating, catheter connection, external tubing, accessory setup, and basic operational checks do not resolve the fault, common external causes have been ruled out.
The AutoCAT 2 should be:
- Removed from service
- Labeled Out of Service
- Sent for repair or bench evaluation
A persistent helium supply or pneumatic leak fault may involve internal valves, regulators, seals, pressure sensors, or pneumatic drive components. Knowing when to stop is proper troubleshooting, especially for life-support equipment.
Clinical Use Tip
Do not troubleshoot helium or pneumatic faults on an active patient beyond immediate safety checks unless clinical staff confirm it is safe. If balloon inflation, augmentation, or gas integrity is questionable, move the patient to another verified support device first to maintain therapy continuity.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Clinical staff reported the Teleflex AutoCAT 2 displayed a helium leak alarm and had weak balloon augmentation during setup."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found the helium cylinder was seated correctly, but the external balloon drive tubing connector was loose at the pump connection."
Resolution
What action was taken.
Example:
"Reseated the external tubing connection, verified helium pressure was adequate, completed operational testing without recurring pneumatic alarms, and returned the AutoCAT 2 to service."
Helpful Details to Include (If Known)
- Whether the device was on a patient or found during setup
- Exact helium or pneumatic alarm behavior displayed
- Helium cylinder pressure/status
- Whether the cylinder was replaced or reseated
- Whether hissing, gas odor, or pressure loss was observed
- Condition of catheter tubing and external connectors
- Whether blood or fluid was seen in the gas path
- Whether the issue occurred after transport or cylinder change
- Indicator lights or startup behavior observed during testing
- Environmental factors such as transport, bed movement, or strained tubing
- Accessories swapped or reseated during troubleshooting
- Whether operational testing passed or failed
- Final device status: returned to service, removed from service, or sent for repair
Final Thought
Helium and pneumatic faults on an intra-aortic balloon pump must be handled with a patient-safety-first mindset. Start with the visible and correctable causes: cylinder status, seating, tubing, connectors, and setup. If those checks do not resolve the issue, remove the pump from service and escalate for repair. Clear CCR documentation helps show what was checked, what was found, and why the final decision was appropriate.
That is successful troubleshooting.