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Additional information provided in d.9., h.3., h.6.And h.11.One fluid management system (fms) cassette assembly was returned for evaluation.Inspection of the product found no obvious defects that would have contributed to the reported event.The fluid management system (fms) 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.We were unable to replicate the customer's experience during laboratory evaluation.The investigation conducted a non-conformance review of the reported lot number.No deviation were identified that would have contributed to this event and all corresponding production release specifications defined in the device master record were met.Based on the evaluation of the information and materials received, the root cause of the customer's complaint could not be established, the returned product functioned per specifications.In the absence of a confirmed device malfunction and considering the customer¿s acknowledgement that the fluid management system (fms) cassette was not suspected to be causal, non-device factors cannot be excluded as potential contributors to the reported event.Based on the evaluation of the information and materials received, the product met specifications and therefore no corrective action is required.Before release from manufacturing, every pack batch must pass quality testing and inspection confirming that the batch meets all product and packaging specifications.Complaint data for all products is reviewed monthly to monitor for adverse trends.During the last review, no adverse trends were observed for the reported product and event combination.Quality assurance has reviewed this complaint and will continue to monitor data for evidence of adverse trending and take further action, as appropriate.No further action warranted at this time.The manufacturer internal reference number is: (b)(4).
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