(b)(4).A visual, dimensional, and functional inspection of the device involved in the complaint could not be conducted , since the device was not received yet at our facility, and no pictures have been received for evaluation of the alleged defect reported.A device history record review could not be conducted since the lot number was not provided.To perform a proper and thorough investigation to confirm the alleged defect and determine the root cause, it is necessary to evaluate the sample involved.Customer complaint cannot be confirmed based on the information received.Root cause is unknown.No corrective actions can be assigned at this time.If the device sample becomes available at a later date this report will be updated.
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