The product under investigation is not a serviceable device.Therefore, a service record review was not performed.The sample was not returned.Therefore, testing could not be performed.A non-conformance-based review of the lot number was performed and did not reveal any potential contributing factors to the reported complaint.A manufacturing device history record (dhr) review was performed prior to product release to ensure that the product was manufactured in compliance with the device master record.Based on the assessment, the product met release criteria.A review for complaints reported against this lot number was performed.No similar complaints were reported for the product lot under investigation.A check of the batch production record could not be done because no lot number was reported.A check of complaint records for the lot could not be done because no lot number was reported.A check of confirmed complaints for bubbles/gas being absorbed faster than expected showed none since the beginning of 2017.The sample was not returned.Therefore, testing could not be performed.Based upon the information provided, the root cause of the reported event cannot be determined.Based upon the information provided, the root cause of the reported event cannot be determined.Manufacturer will continue to monitor data for evidence of adverse trending and take further action, as appropriate.The manufacturer internal reference number is: (b)(4).
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