Plant investigation: the following investigation tasks have been performed: review of instruction for use (ifu) and/or label evaluation if product deficiency relates to falsification investigation/testing of returned, retained and/or reference samples review of batch documentation review complaint history / trending review of relevant capas.The described situation is adequately addressed in ifu and/or on the label and the product deficiency is not related to falsification.The complaint sample was not available.The provided picture confirms the reported failure.Due to 100% testing, it is highly unlikely to detect a failure in the retention sample.Furthermore, only a small number of reserve samples are available.Therefore the retention sample analysis is not done.The dialyzers are 100% tested for leaks with both bubble-point and air testing during sterilization.So a failure during the manufacturing process can be excluded.Due to a faulty storage or handling process detachments of the potting compound can occur.Batch record investigation (dhr): 20028 products have been inspected according to the inspection protocol, were found conforming to specifications, and have been released without any discrepancies.No indication for any relationship with the reported failure mode has been found during the review.
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