(b)(4).The product was discarded by the hospital; therefore no manufacturer laboratory investigation was possible.Several attempts were performed to obtain the oxygenators serial number for a dhr review, those attempts were not successful, therefore a dhr review of the product in question was not possible.A review for similar complaints was performed.The investigation results out of a similar complaint were as follows: the product was tested and was operating within the manufacturer's specifications.No clotting was observed.A dhr review was performed, no abnormalities were detected.A sap trend search was performed for hmod 70000, failure code: clotting, with the following outcome: 11 complaints were found since 10/2011.All of them are closed.Due to this information no systemic issue could be determined.Clotting is a known phenomenon and has been investigated in a previous complaint.The cause of this failure was determined to not be attributed to a device related malfunction.Based on these results and the information available at this time, the oxygenator in operated within maquet cardiopulmonary specifications.This data will be handled through a designated maquet trending process.If a trend occurs, it will be escalated to quality assurance management for review and determination if further investigation is necessary.
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