One sample was returned for evaluation.Visual inspection confirmed the returned connector to not be properly inserted into the 3 lumen tube.Functional testing was performed by connecting the returned sample to the hl-90 hotline fluid warmer unit.A breach was found in the bonding between the return connector and 3 lumen tube; the fluids were mixed.Manufacturing process review was performed and all procedures were found to be carried out appropriately.A review of the leak testing was conducted with no discrepancies detected during 32 units tested.A sample of 32 units was taken in order to verify that the 3 lumen tube was properly inserted to the return connector; no discrepancies were found.Leak testers are verified by quality on a daily basis to ensure they are capable of detecting leaks.The leak tester is capable of detecting leaks in the inner tube of the triple lumen tube and the external tube.The most probably causes of the reported issue is that the 3 lumen tube was not properly inserted due to a collapsed end of the 3 lumen tube or the segregation of rejected product after performing the leak test was not properly conducted.Corrective action was taken by adding a picture of a 3 lumen tube with a collapsed end as a non-acceptable condition.A picture of a 3 lumen tube not properly inserted to the return connector was also added.All assemblies that do not pass either or both, water or fluid path pressure tests, prior to removing the assembly from the fixture of the tester, will have a red tape strip placed around the 3 lumen tube.Once the red tape strip has been placed, the assembly will be placed in a locked container for non-conforming material.The locked container will be emptied every 3 hours, or whenever full, by quality assurance or a person assigned by supervisor only.Retraining of the production personnel was conducted in order to reinforce the correct segregation of the products rejected after the leak test operation.
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