We have not received the complaint device for investigation.Hence, we could not conclusively determine the root cause of the issue.Our review of the lot history records for this lot did not find any discrepancies either in the manufacturing or packaging process that could be related to this incident.Further, we have not received any other complaints of a similar nature for devices from this lot.The user facility has also reported the incident to fda ( report# (b)(4)).We have contacted the user facility for additional information.We have not received a response yet.
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