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What This Guide Helps With
Troubleshooting helium leak, low cylinder pressure, poor gas delivery, or pneumatic pressure issues caused by external supply or connection problems.
Step-by-Step Troubleshooting
Ensure Patient Safety First
Confirm whether the AutoCAT is connected to or supporting an active patient.
If the pump is in use and a helium leak, low cylinder pressure, or pneumatic fault is present, notify clinical staff immediately and have a backup IABP available.
Expected outcome: Patient support is maintained before equipment troubleshooting begins.
If the patient cannot safely remain on the suspect pump, have clinical staff transfer support to another verified IABP per facility policy. If this resolves the clinical risk, stop and document the issue.
Confirm the Reported Helium or Pressure Problem
Review the exact complaint from clinical staff and observe the pump display or alarm behavior.
Look for symptoms such as:
- Helium leak alarm
- Low helium or empty cylinder indication
- Cylinder pressure warning
- Poor balloon augmentation
- Repeated gas refill or pressure-related alarms
- Pump cycling without effective balloon inflation
- Alarm occurring after transport or cylinder change
Expected outcome: The issue is confirmed as helium supply, cylinder pressure, or pneumatic delivery related.
Check the Helium Cylinder Level
Verify that the helium cylinder is installed and has adequate pressure.
If the cylinder is empty, low, or questionable, replace it with a verified full cylinder approved for IABP use.
Expected outcome: The pump recognizes adequate helium supply and low-cylinder alarms clear.
If replacing the cylinder resolves the issue, return the device to service only after functional checks pass and stop troubleshooting.
Inspect Cylinder Installation and Seating
Confirm the helium cylinder is fully seated, properly tightened, and installed in the correct orientation.
Check that the cylinder connection is not loose, cross-threaded, damaged, or partially engaged.
Expected outcome: The cylinder connection is secure and no gas leak is present at the cylinder interface.
Why this matters: A partially seated cylinder can mimic an internal pneumatic failure even when the pump itself is functioning properly.
Listen and Check for Obvious External Leaks
With the device in a safe test condition and not connected to a patient, listen near the cylinder connection, regulator area, and external pneumatic connections for hissing.
Do not place your face near the cylinder connection while checking for leaks.
Expected outcome: No audible leak is present.
If a clear external leak is found at the cylinder connection, remove the device from service until the connection, seal, or cylinder interface can be evaluated.
Inspect the IAB Catheter Connection and Tubing
Check the catheter extension tubing, helium tubing, luer or pneumatic connectors, and any external adapters for loose fittings, cracks, kinks, or damaged seals.
Ensure the IAB catheter connection is properly secured and not leaking.
Expected outcome: External tubing and connectors are intact, fully seated, and free from visible damage.
If damaged tubing or an accessory is found, replace it with a compatible known-good accessory and retest.
Verify the Correct Balloon and Setup Configuration
Confirm the balloon catheter size and setup information entered into the pump matches the catheter in use.
Check that the pump is configured according to the clinical setup and that no obvious setup mismatch exists.
Expected outcome: The pump setup matches the connected IAB catheter and does not create false leak or fill-volume issues.
Check for Recent Transport or Cylinder Change
Ask whether the issue began after the pump was moved, transported, or after a helium cylinder was replaced.
Movement can loosen external connections or reveal a weak cylinder seal.
Expected outcome: Any transport-related or cylinder-change-related cause is identified and corrected.
Power Cycle Only When Safe
If the pump is not connected to a patient, power the AutoCAT down and restart it according to facility practice.
Observe whether the helium or pressure alarm returns during startup or self-check.
Expected outcome: The pump starts normally without repeated helium pressure or leak alarms.
If the alarm clears after correcting external supply issues, complete a functional check before returning the device to service.
Compare With a Known-Good Cylinder and Accessory Setup
If available, test the pump with a verified helium cylinder and known-good external tubing or test setup.
Expected outcome: The issue either clears with known-good external components or remains with the pump.
If the issue follows the cylinder or tubing, replace the faulty external component.
If the issue remains with the pump, suspect an internal pneumatic, valve, sensor, regulator, or leak-detection problem.
Inspect for Heat, Odor, or Abnormal Sounds
Check for unusual heat, burning smell, repeated internal clicking, constant venting, or abnormal pneumatic noise.
Expected outcome: No abnormal signs are present.
If unusual heat, smell, or continuous internal venting is present, stop troubleshooting and remove the device from service.
Determine Final Device Status
If the helium pressure alarm clears, no leak is detected, and the device passes functional testing, document the correction and return the pump to service per facility policy.
If the alarm remains, pressure drops, helium supply is not recognized, or balloon inflation remains unreliable, remove the device from service.
If the Problem Persists
If the AutoCAT continues to show helium leak, cylinder pressure, or pneumatic delivery problems after the cylinder, connections, tubing, setup, and external accessories have been checked, common external causes have been ruled out.
The issue is likely internal and may involve the pneumatic system, regulator, internal tubing, valves, pressure sensing, or leak detection circuitry.
The device should be:
- Removed from service
- Labeled Out of Service
- Sent for repair or bench evaluation
Knowing when to stop is proper troubleshooting. Do not continue repeated bedside testing on a device with unresolved pneumatic reliability concerns.
Clinical Use Tip
Do not troubleshoot helium or pneumatic faults on an active patient beyond basic visual checks unless clinical staff confirm it is safe. If balloon support is questionable, move the patient to another verified IABP first.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Clinical staff reported the Teleflex AutoCAT displayed a helium leak alarm and showed low cylinder pressure during setup."
Cause
What was observed during troubleshooting.
Example:
"Troubleshooting found the helium cylinder was nearly empty and the cylinder connection required reseating."
Resolution
What action was taken.
Example:
"Replaced the helium cylinder with a verified full cylinder, reseated the cylinder connection, confirmed the alarm cleared, and completed functional testing before returning the AutoCAT to service."
Helpful Details to Include (If Known)
- Whether the device was connected to a patient
- Exact alarm or message displayed
- Helium cylinder pressure or empty-cylinder indication
- Whether the cylinder was replaced
- Whether cylinder connection was reseated
- External tubing and catheter connection condition
- Any audible hissing or gas leak
- Whether the issue started after transport
- Balloon size or setup information checked
- Alarm behavior after restart
- Unusual sounds, heat, or smell
- Final device status
Final Thought
Helium and cylinder pressure problems should be approached carefully because they can directly affect balloon inflation and patient support. Start with patient safety, then verify the cylinder, connections, tubing, and setup before suspecting internal pneumatic failure. Clear CCR documentation helps show what was checked, what was corrected, and why the device was either returned to service or escalated for repair.
That is successful troubleshooting.