The complaint device was returned for evaluation.Incoming visual inspection did not identify any anomalies.Technical visual inspection did not identify any anomalies.Device evaluation found the timing was off.The timing was adjusted.The device was calibrated.Leak test and suction accuracy was tested and passed.The gauge test, leak test - supply/patient side, regulation test in both modes all passed.The final visual inspection was good.A definitive root cause cannot be determined; however, the reported issue was most likely due to the pressure sensor falling out of calibration.This was not related to the previous repair.This type of event will continue to be monitored.
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