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A facility reported a microsensor (id 826633) was implanted on (b)(6) 2024.After the procedure, the physician found that he could not lock the female connector into the adapter, it was identified that the threads were slightly warped causing a failure to completely lock the lure connector.Therefore, the csf was leaking from the lure connector, the physician tried to use the tape to wrap the lure connector.Three days later, there was still minimal csf leaking.On (b)(6) 2024, the physician retrieved the microsensor and stop monitoring.The patient is stable.
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Updated fields: d4, d9, g3, g6, h2, h3, h4, h6, h11.The microsensor (id 826633) was returned for evaluation.Device history record (dhr) - review was performed on reported lot number 6923882, and no anomalies were identified during the manufacture or packaging of the device.However, the returned device for failure analysis doesn¿t match the reported lot number.Therefore, we have reviewed the dhr for returned device¿s lot number 6345637 and no anomalies were identified during the manufacture or packaging of the device.Failure analysis - the catheter and microsensor were visually inspected.All luer connectors were visually inspected.No defects were observed.None of the threads appeared to be warped.The catheter was then connected to a syringe filled with water.The tip of the catheter was clamped with a hemostat, and pressure was applied using the syringe.No leaks were observed.Root cause analysis - per the complaint background, csf leaking.The complaint was not confirmed during investigation and failure analysis evaluation.Per risk documentation a potential root cause is improper cap tolerance or mishandling.
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