During patient use, customer reported that the autopulse platform (serial # (b)(4)) displayed "system error, out of service, revert to manual cpr " upon powering on.Error message could not be cleared by the user.No known impact or consequence to patient was reported.
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The reported complaint of the autopulse platform (serial # (b)(4) displayed a "system error, out of service, revert to manual cpr" error message was confirmed during functional testing and archive data review.The investigation findings revealed that the root cause of the reported error message was due to a defective drivetrain motor which is likely attributed to wear and tear.No physical damage was observed on the returned autopulse platform during visual inspection.During device archive data review, latched error 139 (unable to hold compression position) was observed on the reported event date.Thus, confirming the reported complaint.Initial functional testing could not be performed due to "system error, out of service, revert to manual cpr" error message displayed on the autopulse platform during power on.Ap vision 3 software was used to clear "system error, out of service, revert to manual cpr".However, after clearing the error, ua17 (motor on for too long during active operation) displayed during functional testing.To remedy the ua17, the defective drivetrain motor was replaced.Ua17 error message was related to latched error 139 (unable to hold compression position) because both errors were due to similar failure mode found.After part replacement , the autopulse platform was re-evaluated.Platform was subjected to the run-in test using the 95% patient large resuscitation test fixture (lrtf) with known good batteries until discharged without any fault or error.The autopulse platform passed all the functional tests and is ready for clinical use.Historical complaints were reviewed for service information related to the reported complaint and there was no similar complaint for autopulse with serial # (b)(4).
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