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The information provided by bard represents all of the known information at this time.Despite good faith efforts to obtain additional information, the complainant / reporter was unable or unwilling to provide any further patient, product, or procedural details to bard.The following were reviewed as part of this investigation: patient severity, trend analysis, applicable previous investigation(s), sample (if available), applicable fmea documents, labeling, and applicable manufacture records.Based on a review of this information, the following was concluded: the complaint of a broken and unraveled guidewire is confirmed, and the cause is determined to be use-related.The returned product was a 4 fr single lumen picc solo catheter, with a guidewire with hoop and various other components.Visual evaluation showed that the distal end of the guidewire was broken off from the rest of the wire and was covered in residue.This segment, wherein some core wire was still be present, was knotted such that about 0.6 cm of the wire was distal to the knot.A section of frayed and stretched outer coil, about 20 cm in length, was attached to this distal end with the knot.The knot contained tissue and other residue.The other returned segment of guidewire was found inserted into the hoop with j-straightener and covered in residue.The length of the wire from the proximal (stiff) tip to the tip of the remaining core wire was found to be about 48.1 cm.The guidewire is nominally 50 cm long.The distal end of this section was found to have been curled or bent backward.Part of the core wire was exposed here, and the remaining coils were somewhat stretched out.Upon evaluation, two green-hubbed introducer needles (which are not provided with this device), one with copious amounts of blood, internally and externally, and the other clean, were returned with the regular 7-cm safety introducer needle (also clean).This seems to indicate that the guidewire was used with the dirty introducer needle not included as part of the picc kit.The distal end of the picc and stylet manifested blood residue and crystals at the distal tip, indicating that it had been inserted; the crystals are also a possible sign that the catheter was flushed with a solution with a solute crystalline in its solid form, such as saline.Microscopic evaluation showed that the core wire was present at the distal end and protruding from the proximal end of the knot.The break at the distal end of the core wire appeared relatively clean, with little or no necking.The break at the proximal end of the core wire also seemed relatively clean, with little or no necking.However, a part of the distal fracture surface seemed to be shiny and smooth, indicating the possibility of retraction against a sharp surface, most likely an introducer needle.The inside edge of the bevel of the used green-hubbed introducer needle returned showed marked blunting, typical of grinding caused by retracting the guidewire while it is inserted into the needle.In addition, the fractured ends of the coil wire do not appear to manifest necking, which is also consistent with retraction against a needle.The fracture was not due to a purely tensile event.Neither the clean/unused green-hubbed introducer needle nor the safety introducer needle included in the picc kit shows any such evidence of grinding.The catheter tip did not appear to have been trimmed, and the termination appeared to be a manufactured cut.The event appears to have been a cascading failure in which the guidewire tip was knotted and also came into contact with the introducer needle used in the procedure.When the wire was retracted, the damage done by the sharp surface as well as the resistance contributed by the knot resulted in a broken wire.Contributing factors for knotting of catheter tips may include a tortuous guidewire path, doubling back of the tip, and repeated pushing and pulling on the guidewire.The ifus instruct that if the guidewire must be withdrawn while the needle is inserted, remove both the needle and the wire as a unit to prevent the needle from damaging or shearing the guidewire.No further action is required because the complainant event could not be related to a deficiency in product manufacture or deficiency while under correct product use.
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