Product event summary: the balloon catheter afapro28 with lot number 57851 was returned and analyzed.Visual inspection of the balloon catheter showed the device was intact with no apparent issues.Smart chip verification indicated the catheter was used for one injection.The outer diameter of the balloon proximal bonding was within specification.Insertion and retraction tests were performed with difficulty.The push button of the catheter was in the back position.The length of balloon segment was 0.88¿.The balloon was wrapped on itself and it was difficult to put back the balloon sleeve on it.Advancing the push button on the catheter handle during balloon deflation stretched the balloon to maximum length allowing the folds in the balloon material to wrap tightly, reducing the profile of the balloon segment for ease of re-entry into the sheath.Push button retracting during insertion was identified as a cause of the insertion difficulty, as it causes the balloon material to fold up in itself increasing the outer diameter.Retraction is not controlled and varies from one catheter to another.After inflating the balloon and deflating while pushing the push button in the forward position, balloon wrapped properly and the length of balloon segment was 1.15¿ then inserted easily into test sheath.The balloon catheter passed the electrical, integrity test and performance test.The shape of the balloon was normal.The flushing and aspiration test was also performed several times inside the sheath without any issue.In conclusion, the reported air ingress was not confirmed through testing.The balloon catheter passed the returned product inspection.If information is provided in the future, a supplemental report will be issued.
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