A doctor reported that a large amount of air was mixed in the infusion line during a procedure.The product was replaced and procedure completed with no patient harm.A product sample has been requested, however, it has not been received for evaluation at the manufacturing site.
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Additional information provided.The lot complaint history was reviewed, this is the third complaint for the finish goods lot; however, the first for this issue for this lot.The device history record shows the product was released per specifications.The returned sample was visually inspected and surgical residue was observed in the fluid flow paths.The ball in the drip chamber¿s check valve moved freely per specification.The non-invasive flow sensor (nifs) on the cassette housing was in good condition.A calibrated console representing the current software version was used to test the sample.The sample could prime and pass intraocular pressure calibration successfully.No anomalies were observed during priming.The infusion pressure was measured at multiple set points throughout the console range and met specifications.Toggling the infusion and the fluid/air exchange (f/ax) modes, fluid and air flowed from the cassette to the infusion line continuously without any bubble in various settings in all sub modes.No message code appeared on the screen during functional testing.Fluid flowed through drain bag without any interfering.No mix of air from the infusion line was observed during functional and performance testing.The root cause of the customer's complaint could not be established; the returned sample met specifications.After a thorough investigation of this complaint, it has been determined that this sample met specifications; therefore, no corrective action is required at this time.Quality assurance has reviewed this complaint and will continue to monitor data for evidence of adverse trending and take further action, as appropriate.The manufacturer internal reference number is: (b)(4).
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