The product was returned to the maquet for investigation and was visually inspected in the maquet complaints laboratory.Two cuts were found at the connecting end of the tubing.One was lengthwise, and the other across the tubing near the connector.A device history record of the affected lot has been investigated and no abnormality was found.Also, there is no failure record for the tube cutting machine.Although the failure occurred during operation, the customer should have detected the issue during priming of the set.The investigation results and the available information are inconclusive in establishing a clear root cause.External physical effects are considered to be the most likely cause for the reported incident, and this could include a handling issue during assembly.As a corrective/preventive action, the operators were retrained in the 100% visual inspection procedure.Also, any marks or scratches found on the tubing are referred to the supplier to evaluate.An improved cutting tool has also been introduced ((b)(4)2015).The data is also being handled through a designated maquet cardiopulmonary trending and applicable investigation process.If a trend occurs, it will be escalated to quality assurance management for review and determination if further investigation is necessary.Based on the investigation results, no further investigation or action is warranted at this time and the complaint will be closed.This is the final report.
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