Qn#(b)(4).A device history record review was performed on the epidural catheter and needle with no relevant findings.The customer reported recently three "wet taps" have occurred during insertion of the epidural catheter due to the catheter feeling stiffer.The puncture of the dura or a wet tap is typically a function of the user and is not necessarily a defective component.However, if a component would be involved in the cause it would be the epidural needle which was not returned for evaluation.Therefore, the ifu for this product, (b)(4), was reviewed as a part of this complaint investigation.The ifu for this product warns the user, "remove needle and attempt new puncture when blood or spinal fluid is returned in plunger barrel.The needle has been placed incorrectly".A review of design change history for part numbers kz-05400-002 and ebz-05400-003 was performed as a part of this investigation.No design changes have been made to this product in the past two years that would have led to this complaint.A corrective action is not required at this time as a potential root cause could not be determined based upon the information provided and without a sample.Other remarks: complaint verification testing could not be performed as no sample was returned for analysis.Typically, a dura puncture or wet tap is a function of the user and is not a function of a defective epidural needle component.A device history record review was performed on the catheter and needle with no evidence to suggest a manufacturing related cause.Therefore, the potential cause of this complaint could not be determined based upon the information provided and without a sample.
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