Investigation results: there was no complaint sample provided for investigation, therefore an investigation could not be performed.Batch history review: the device quality and manufacturing history records (dhr) have been checked for all available lot numbers and the products found to be according to our specification valid at the time of production.The batch-related complaint history review revealed two similar complaint/s for the reported failure mode.Explanation and rationale: due to a lack of data and without the product we cannot determine an exact conclusion and root cause for the mentioned deviation.According to the quality standard, a production error and a material defect can most probably be excluded.If further investigations are required, the product should be provided for examination.Conclusion and measures / preventive measures: based upon the investigation resulsts, root cause cannot be finally concluded.Therefore the root cause specific risk cannot be identified.The potential risk determined during initial vigilance evaluation remains valid.Based upon the investigations results a capa is not necessary.
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