(b)(4).Device evaluation: the report that the guide wire kinked was confirmed.Returned were a guide wire and a dilator.The dilator body was slightly bent at the tip.Under microscopic examination, the distal tip of the dilator was slightly pushed back in one location.There were white regions in the tip, indicating that it had been exposed to stress.There were kinks in the guide wire at 15, 25.5, and 30 cm from the bottom of the j-bend.A manual tug test confirmed that both welds were intact.The length of the guide wire measured approximately 60.1 cm.The length of the guide wire was consistent with the guide wire graphic.The outside diameter (od) of the guide wire measured 0.800 mm, which met specification of 0.788 - 0.826 mm per the guide wire graphic.The inside diameter (id) of the dilator tip could not be measured due to the damage.The proximal end of the guide wire was inserted into the distal tip of the dilator and the dilator met resistance at the first kink in the wire.The instruction booklet provided with the kit describes an insertion procedure including the step to enlarge the cutaneous puncture site with the cutting edge of a scalpel prior to dilating.The customer reported that no incision was performed.The device history records were reviewed with no evidence other remarks: to suggest a manufacturing related issue.The damage to the guide wire and dilator is characteristic of encountering resistance during insertion.Based on the condition of the sample and the report that it occurred during insertion, operational context caused or contributed to this event.No further action will be taken.
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