Implanted date: device was not implanted.Explanted date: device was not explanted.Health professional - unknown.Occupation - unknown.The actual device was not returned to the manufacturing facility for evaluation.Therefore, the investigation was based upon evaluation of user facility information, and evaluation of the retention sample.Based on the results of our investigation, the root cause of the complaint could not be identified since condition of the actual sample was not confirmed.Retention samples were visually in good condition and passed the cannula stiffness test.Moreover, no bent cannula was encountered during simulation.We have cannula guide chuck used to hold cannula while placing the needle assembly to the collar to prevent unnecessary movement that could damage the cannula.When the bevel orientation is correctly placed against the collar then the hub, cannula, and collar are pressed into the protector.If there is bent cannula, then protector cannot be placed into the needle.Lot history file showed no issued nonconformity related to the complaint.We have series of in-process inspection and qc outgoing inspection to check overall condition of the needles.(b)(4).
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