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The customer had 3 retina packs that came with stopcocks that leaked, and after examination under the microscope, a crack was observed on each stopcock.A sample was received for investigation; fifteen unused stopcocks were inspected under a microscope and no defects were noted, and all fifteen were tested by connecting a 10 ml syringe full of fluid (water) to the stopcock with no leaking detected or observed from the samples.Based on the complaint details, investigation, and physical samples review and test, the issue reported of leaking could not be duplicated with the samples received and could not be confirmed.The cause was documented as not confirmed with received sample, and the supplier quality team will 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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