The investigation of the complaint was limited because no sample was returned.Due to the fact that reported issue occurred during procedure it is the most probable that the catheter was cut off by tuohy needle when catheter was pulled back which is in conflict with instruction for use l6308 rev.100, warnings, point 1: "never pull back the catheter through the epidural tuohy needle as this can result in the catheter being cut and left in the epidural space.If catheter insertion difficulties are encountered, the epidural tuohy needle and catheter should be removed carefully together as a single unit, and the procedure repeated".
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