Investigation results: visual investigation: the received set screw is a s4 version (sw790t) with a ennovate (sy001ts) inscription.We made a visual inspection of the complained screw.It is clearly recognizable that the present screw is a sw790t and not a sy001ts as lasered on.The extract of the drawing of sy001ts shows the difference, also the 3-d graphics.The sw790t is shorter, has a different thread- profile and a hexagon- driver profile instead a torx profile.Batch history review: the device quality and manufacturing history records have been checked for the available lot number and were found to be according to our specifications valid at the time of production.Review of the complaint history revealed that no similar complaints have been filed against products from this batch number.The review of risk assessment revealed that the overall risk level (severity 3(5) x probability of occurrence) according to din en iso 14971 is still acceptable.Conclusion and measures / preventive measures: based upon the investigation results, the root cause of the reported issue can be traced back to a manufacturing-related failure.A recall for the batch 52758014 was initiated.Based upon the investigations results a product safety case and a field safety corrective action were initiated.
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