(b)(4).A visual, functional and dimensional inspection of the product involved in the complaint could not be conducted since the product was not returned.No photo available for evaluation.The device history record (dhr) of the product 031-33j batch number 74f1501360 has been reviewed and no issues or discrepancies were found which could potentially relate to this complaint.No nonconformance reports were originated for the lot in question that can be associated to the complaint reported.Dhr shows that the product was assembled and inspected according to our specifications.Customer complaint cannot be confirmed due to the lack of the device sample to perform a proper investigation and determine the root cause.If the device sample becomes available this investigation will be updated with the evaluation results.A capa , file #(b)(4) , was opened to perform a further investigation this issue (this capa is owned by r & d).According to the capa investigation so far the root cause for the issue was the positioning of the thread lead and the softness of the new resin used for the snap adaptor.
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