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(b)(4).Device was used for treatment, not diagnosis.Investigation summary: the complaint device is not being returned, therefore is unavailable for a physical evaluation.No further information regarding the cause of the defect has been provided to help determine a root cause for this failure.Furthermore, no lot number was supplied which precludes conducting a lot history review specific search in the complaints handling system.Therefore, we cannot determine what caused the user to experience the reported event, we cannot discern a root cause for the reported failure mode.This complaint cannot be confirmed.This complaint file is being closed, should any new information be received in the future, this file will be reopened at that time and updated to reflect the information received.At this time, no corrective action is required, and no further action is warranted.However, depuy mitek will continue to track any related complaints within this device family as a means of monitoring the extent with which this complaint is observed in the field.(b)(4)-incomplete.The lot number is not currently available.
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