(b)(4).Investigation summary: in response to the event reported a device history review was conducted for lot number 0063911.Our records show that this is the only instance of this issue occurring in this production batch.According to the sampling plan applied for product performance, this lot was accepted and released without defects being noted during the final assembly or visual inspections.A sample could not be obtained for evaluation and testing; in lieu of the affected device, visual analysis was performed on retention samples for this lot, the units were found to be free of any debris or other abnormalities.Unfortunately without the ability to investigate the affected unit our quality engineers were unable to determine the root cause for this complaint.
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It was reported that a intima-ii y 22gax1.00in prn/ec slm had foreign matter before use.The following was reported by the initial reporter: "the patient was admitted to our hospital for emergency treatment due to excessive drinking, and the doctor ordered that compound sodium chloride 500m intravenous drip be given once a day.When three or eight pairs of closed venous indwelling needles were checked before infusion, foreign bodies were found on the soft wall of the closed venous indwelling needles.A new batch of closed venous indwelling needles was immediately replaced, and the infusion was successfully completed.It had no effect on the patients.".
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