(b)(4).The device is not available for manufacturers laboratory investigation.Device history record of the lot has been investigated and no abnormality was found.A review of similar complaints was performed.A similar complaint investigation was found with the following results: samples with the same failure were forwarded to the supplier.Based on the information from the supplier,the failure could have occurred during transport, storage or sterilization of the component, which made the retaining force of the filter weaker.Our storage and sterilization conditions are automated and monitored, so it could not have an influence.As far as transportation is concerned,we monitor the trucks with data-loggers during the hottest season.If there was an influence on transportation, all of the pieces would be affected.The most probable root cause is material failure.There is no assembly process of the cap in our production.Based on the information provided by the supplier, the assembly process of the claimed cap is outsourced.An internal clinical assessment has been performed based on the received complaint report.It seems that this incident is not user error but rather a failure of the spike.As corrective action, a supplier complaint has been opened to the supplier of the spike.Also,the investigation results were evaluated and we will continue monitoring the trend in our production.The document related to this process was revised and control points were added.The data is also being handled through trending and applicable investigation process.If a trend occurs,it will be escalated to qa management for review and determination if further investigation is necessary.
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