The product was disposed by the hospital; therefore no manufacturer laboratory investigation was possible.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 the results of the previous complaint investigation and the information available at this time, the oxygenator in question operated within maquet cardiopulmonary specifications.Dhr review: even after repeated inquiries, the information of lot number and serial number is not available, and therefore the requested dhr-review will not be carried out.The complaint sample as well as the information about the lot number and the serial number was not transmitted to mcp, and this will also not occur in the future.Based on this a confirmation of the failure is not possible.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.Due to this no further action will be completed at this time.
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