Plant investigation: review of the instructions for use (ifu) and/or device label determined the described situation is adequately addressed.
The complaint sample was not available and no meaningful pictures were provided.
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 was not performed.
Although st.
Wendel dialyzers are 100% tested for leaks (bubble-point testing and air testing during sterilization), leaks due to adverse environmental conditions or mechanical stress during treatment can occur in very few cases.
A batch record investigation was performed and all product was found to be conforming to specifications, and released without any discrepancies.
A cause for the reported failure mode could not be established.
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