Result - the samples were received by the manufacturing site for additional evaluation.A visual evaluation of the returned sample shows that the needle was broken.In addition, the needle appears to be bent.A review of the manufacturing process and device history record revealed no abnormalities during the manufacture of the reported lot number 5062666.A quality notification review was conducted for the cannula component and no ncmr's and/or scars were generated for conditions related to broken needle.Conclusion - although an absolute root cause for this incident cannot be determined, the quality engineer states that based on previous investigations and sample evaluation showing that the needle was bent, this defect could potentially be due to error in user technique.This may be caused by the spinal needle being bent off axis in some manner and withdrawing the needle through the introducer, engaging the sharp bell of the introducer needle and fracturing on the point of the introducer needle.Another potential root cause is excessive bending and/or restraightening of the needle.No possible cause has been identified for this complaint related to the manufacturing process.See report for investigation results.
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