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Dhr review: the complaint lot# is 4199689, sku is 383323, assembly in suzhou plant on 2024.Aug.13, a planned lot quantity of (b)(4) ea.Review the in-process test record and outgoing test report, all test results meet the product specifications, no abnormal found.Review the product assembly record, no non-conformities, deviations, or rework activities for this lot.Returned sample analysis: the customer provided two pictures; one showing the used complaint unit placed inside the unit packaging.The complaint unit was returned.Two wounds were observed in the extension tubing of the returned complaint unit.Retain sample analysis: sampling 2ea from the retained samples of the same lot to do inspection and leakage test, the test result is within product specifications.Possible cause analysis: based on the reported information and analysis of the complaint unit, the extension tubing is damaged.The possible reasons for tubing damage during manufacturing include: 1.Incoming tubing is damaged/broken.2.Tubing was damaged or broken by the clamper during auto adapter swaging process.Current manufacturing already has control procedures as below to monitor and prevent this kind of defect: 1.Incoming quality check can detect and control the risk of raw material damage.2.Both in-process and outgoing sampling does inspection and leakage test for extension tubing.Tubing damage by the clamper during auto adapter swaging process can be detected.Conclusion(s): there is no abnormality found in the manufacturing records and the retained sample test results pass, so the root cause is not clear for the reported issue.
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