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.One used sample was returned for evaluation.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 ultrasonic 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 (bss) bottle through the irrigation path continuously, no fluidic anomalies were observed.No occlusion or obstruction was identified, during inspection and functional testing.The root cause of the customer's complaint could not be established, as the returned cassette was evaluated and 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.The manufacturer internal reference number is: (b)(4).
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