(b)(4).The customer returned a radial artery catheterization device consisting of a guide wire advancer tube, a spring wire guide (swg), a catheter, and a needle.The catheter and needle appeared typical with no anomalies.There were no kinks in the swg visible inside the advancer tube; however, the swg could not be advanced through the needle.It could move back and forth a short distance.The back of the advancer tube was cut off in order to remove the guide wire for evaluation.Under microscopic examination the guide wire coils had significant damage between 1 and 2mm from the distal tip of the wire.There were also multiple locations that exhibited a displaced coil.The outside diameter (od) of the guide wire measured 0.392mm, which met specification.The length of the guide wire measured 11.6cm, which also met specification.A review of the device history records (dhr) for the catheterization device did not reveal any manufacturing related issues.Other remarks: the report of difficulty inserting the guide wire through the needle was confirmed through examination of the returned sample.The coils of the guide wire had been damaged near the distal tip, which prevented the wire from entering the needle cannula.A dhr review was performed and it did not reveal any manufacturing related issues.Based on the nature of the damage to the wire and the information reported, it was determined that operational context caused or contributed to this event.
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