Additional information provided in h.3, h.6 and h.10.The customer did not retain the product lot information, therefore the device history records could not be reviewed.The foreign material was not returned for further analysis to determine the identity and potential source.Without the sample, the investigation was unable to determine causality for this event.The root cause of the customer's complaint could not be established as a sample has not been received and the condition of the product could not be verified.Without analysis of the sample, it is not possible to isolate the root cause.As the root cause is unknown, the relationship, if any, of the device to the reported incident cannot be determined.No action will be pursued at this time for this occurrence.Complaints are continuously monitored to identify product and/or process areas where debris/foreign material is occurring.In addition, routine training and awareness is conducted with all manufacturing associates to reinforce the importance of wearing proper ppe and maintaining clean work areas.Quality assurance has reviewed this complaint and will continue to monitor data for evidence of adverse trending.The manufacturer internal reference number is: (b)(4).
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