(b)(4).It is unknown if the device sample is available for evaluation at the time of this report.A visual, functional, and dimensional inspection of the product involved in the complaint could not be conducted since the product was not returned.The device history record could not be conducted since the lot number was not provided.No corrective action can be established at this moment since the product sample is not available for evaluation.Physical sample is necessary in order to confirm the failure mode.Customer complaint cannot be confirmed based only on the information provided, to perform an investigation and determine the source of defect reported it is necessary to evaluate the sample involved on this complaint.If the device sample becomes available at a later date this complaint will be updated.
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