On 8/17/16 integra investigation completed.Manufacture date unknown.Method: failure analysis, device history evaluation results: failure analysis - a kerrison rongeur was returned with extreme wear, damaged screw on handle, repair markings on spring, dull tip and missing screw on top rail.Upon further investigation, it is noticed that the screw that is intact on the handle has been tampered with and the screw on the top rail is missing.This missing screw could have happened during sterilization/processing of the product and also not knowing the age or how the instrument was handled, could also have been a factor.The complaint report is confirmed.Device history evaluation - nonconforming product report / nonconforming material report history: none.Corrective action preventive action history/ correction: none.Variance authorization / deviation history: none.Engineering change order/manufacturing change order history: there are no applicable engineering change order/ manufacturing change order history.Health hazard evaluation history: none.Conclusion: root cause has not been identified as a workmanship or material deficiency.
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