(b)(4).Investigation results: received one used (contaminated with blood) cannula hub of introcan safety pur 20g, 1.1x25mm-us in an opened packaging.The capillary hub and protective cap were not returned for investigation.Visually inspected the returned sample and observed the safety clip was located in the middle of the cannula, not in an engaged position.For functional test, the safety clip was repositioned and a new g20 catheter hub was placed onto the cannula.Upon withdrawal, the clip was able to engage and covered the tip of the cannula.There was no rough surface/dented mark observed on cannula surface.Clip was not deformed.The assembly machine is equipped with vision system which conducts 100% inspection on the clip condition.Therefore, it is unlikely a defective clip can escape the process.The catheter hub was not returned for further evaluation.A review of the device history record was performed and there were no such defect encountered during final control inspection.The cause of the reported defect could not determined.We will maintain this report for further references and continue to monitor other reports for similar occurrences.If any additional pertinent information becomes available the complaint will be re-opened and a follow up will be submitted.
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