Visual analysis, additional testing methods, and dimensional analysis were performed on the returned device.The reported difficulty flushing/purging the catheter was unable to be confirmed due to the condition of the returned device (dried contrast within the sheath).A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.A query of the complaint handling database for the reported lot was performed and revealed there is no indication of a lot level quality product issue.The investigation determined that the reported gas/air leak when flushing/purging was unable to be confirmed.The catheter was returned with dried contrast visible throughout the window region.The catheter was then placed into a sonic water bath to remove the dried contrast.The catheter was then attempted for a second time to flush/purge liquid; however, the catheter remained unable to be purged.It is possible that the user retracted the plunger, or applied negative pressure to the syringe, which will cause air bubbles to appear in the syringe--as the catheter is unintended for negative pressure application; however, this cannot be confirmed.There were no visual anomalies nor dimensional errors noted, nor any issues which could be attributed to the reported gas/air leak when flushing.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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