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A review of the manufacturing instructions, drawing, quality control, complaint history, device history, documentation, inspection of unused product, and a visual inspection of the returned device were conducted during the investigation.The visual inspection of the returned device confirmed the reported burr on the device, seen through the tyvek packaging.This was confirmed to be peeling of the device¿s coating.Additionally, a document-based investigation evaluation was performed.There is evidence to suggest the product was not made to specifications.A review of the device history record showed one nonconforming event which could contribute to this failure mode; however, the affected units were scrapped and not replaced.It should be noted there were no other reported complaints for this lot number.Furthermore, a review of the manufactures instructions and quality control procedures was conducted, and no gaps were discovered.Based on the information provided, the examination of the returned product, and the results of our investigation, the reported failure mode was traced to manufacturing.Retraining has been issued to affected departments.Cook will continue our monitoring of similar complaints and have notified the appropriate personnel of this event.Per the quality engineering risk assessment no further action is required.
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