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A review of the device history record traceable to the reported lot number indicates that the product was processed and released according to the product¿s acceptance criteria.The used cassette was visually and functionally evaluated on a calibrated console.Inspection of the sample found no obvious defects that would have contributed to the reported event.The cassette was tested on a console, primed and tuned with the hand piece successfully and could achieve maximum vacuum.No system message was generated during functional testing.No fluid or air leaks, and no cracks were observed from the connectors.The irrigation and aspiration flow rates were measured and found to be within specifications.Fluid flowed from the balanced salt solution bottle through the irrigation path continuously, no fluidic anomalies were observed.No occlusion or obstruction was identified during inspection and functional testing.After inspection and evaluation of the returned cassette, the root cause of the customer's event could not be established as aspiration performance met specifications.After investigation of this complaint, it has been determined that this sample functioned per specifications; therefore, no corrective action is required at this time.Based on our current tracking, there are no adverse trends for this reported complaint and lot(met specifications).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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