11/20/15 integra investigation completed.Device manufacture date unknown.Method: failure analysis, device history evaluation.Results: failure analysis - failure analysis cannot be completed due to the lack of information received to perform a complete investigation.Product has not been returned for evaluation.Device history evaluation - dhr review, nonconforming product report / nonconforming material report history: none, variance authorization / deviation history: none, engineering change order/manufacturing change order history: there is no applicable engineering change order/manufacturing change order history.Corrective action preventive action history: none.Health hazard evaluation history: none.Conclusion: root cause cannot be determined due to the lack of information received to perform a complete investigation.
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