Additional narrative: the 510k: this report is for an unknown screws: 4.0 mm cannulated/unknown lot.Part and lot number are unknown; udi number is unknown.Complainant part is not expected to be returned for manufacturer.Without a lot number the device history records review could not be completed.The manufacture date is unknown.The investigation could not be completed; no conclusion could be drawn, as no product was received.The received picture was reviewed and the complaint is confirmed as the damaged thread is visible on the picture.In addition a breakage can be confirmed as a piece of the thread is separated from the screw.Product was not returned and no article- and lot number was provided.Therefore, no further evaluation is possible.Based on the information available, it has been determined that no corrective and/or preventative action is proposed.This complaint will be accounted for and monitored via post market surveillance activities.If additional information is made available, the investigation will be updated as applicable.Device was used for treatment, not diagnosis.If information is obtained that was not available for the initial medwatch, a follow-up medwatch will be filed as appropriate.
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