Device return: one used 50328-07 catheter (partial segment) w/unmarked/unknown contamination shield/sheath accessory device.Engineering analysis: visual assessment (pre and post decontamination) of the returned partial catheter segment and attached contamination shield/sheath was performed.The report noted that the contamination shield/sheath hemostasis valves were observed to be in the locked position.After decontamination the contamination sheath was unlocked and the catheter was able to be inserted and removed thorough the contamination sheath and the introducer.When the contamination sheath was in the locked position the catheter would not insert was observed to kink.Two kink marks were observed on the distal end of the introducer approximately 1" from the tip.An indentation on the catheter segment was observed from the contamination sheath hemostasis lock.Findings: engineering analysis of the returned (partial) catheter segment and accessory devices were unable to confirm the reported product (kinking) and insertion issues.The triox catheter is a precision optical instrument and must be handled with care.Kinking, excessive manipulation, or grasping with forceps or hemostats can permanently damage the fiberoptics, components.Care should also be taken to remove any slack or loops in the catheter as this can also lead to migration.The 50328-07 catheter was pre-tested prior to placement with no issues detected at that time.The exact cause(s) of the reported event/product issue are unknown.
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