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The account reported finding tubing sealed at opening and fluid was unable to go through the tubing.The customer returned 2ea opened and unused product; upon visual inspection, both samples appeared to have kinking/sealing of the tube underneath the drip chamber, and each sample was connected to a saline iv bag to test if fluid was able to push through the product.Based on the complaint details, sample evaluation, and investigation, the issue can be confirmed; during visual inspection and testing of the returned products, a seal of the tubing underneath the drip chamber was identified, and fluid was not able to flow through the product.At this time, a root cause for the issue cannot be identified, and the manufacturer provided their investigation and did not find any discrepancies within their records or retained samples that could've contributed to the reported issue; supplier quality team will also monitor this issue for trending purposes.There were no reports of death, serious injury, medical intervention, or follow up care.It has been determined that the reported event could cause or contribute to serious injury if it were to occur again.In an abundance of caution, this is a reportable event.If additional information becomes available this report will be reopened and reevaluated.This medical device report (mdr) is being submitted as part of retrospective review activities, which include review of historical data in accordance with regulations at 21 cfr part 803.The information included in this mdr reflects the information reasonably known to the manufacturer at the time of this retrospective review and submission.
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