The problem had been caused by breakage of 7024 universal f inner swivel connector, which connects the inner tube to the t-piece at the machine end.No signs of mechanical impact found when visually inspecting returned sample.The tests carried out at the manufacture include separate leakage testing of the inner and outer tubes therefore we believe the connector did brake after the system was assembled and packed.The issue had to be identified during the pre use checks when testing the inner tube for leakage.A red inner lumen leak tester with the instruction how to use it is in the bag for this purpose.It is the first report regarding this type of defect for this product code since 2017.No products from the same lot in the stock.It is an extremely rare occurrence, with the failure rate less than (b)(4).
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