Investigation results: one representative sample from batch 7075490 was returned for investigation.There is a 100% leak test inspection station at the assembly machine to ensure the flow of the catheter is blocked when the flow switch is activated.The sample was challenged at the inspection station and passed the inspection.The sample was then subjected to measure the flow switch button activation force.A review of the device history record of packaged needle 682245 revealed no irregularities during the manufacture of the reported lot # 7075490 the result showed that the flow switch button activation force was within specification.Thus, the nonconformance cannot be confirmed.Investigation conclusion: the sample had passed the leak test inspection and the flow switch button activation force was within specification.Root cause description: no root cause was established as the sample had passed the leak test inspection and the flow switch button activation force was within specification.
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