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Manufacturing review: the device history records have been reviewed and this lot met all release criteria.There was nothing found to indicate there was a manufacturing related cause for this event.This is the only complaint reported to date for this lot number and failure mode.Labeling review: the review of the ifu (instructions for use), indications, warnings, precautions, cautions, possible complications, and contraindications showed that the product labeling is adequate.Investigation summary: one guidewire and one introducer needle were returned for evaluation.Stretching was noted to the outer coil wire with the distal ends of the inner core wires protruding from the stretched portion.When viewed under magnification, wear and use residue were identified at the tip of the introducer needle bevel.Based on the findings, the investigation is confirmed for the reported guidewire advancement issue, specifically due to a frayed guidewire.It is likely that the identified frayed guidewire issue was perceived as an advancement issue, as it would prevent the wire from moving normally.Additionally, per the evaluation results, wear and use residue were identified at the tip of the introducer needle bevel.These are characteristics typical of retraction of the guidewire against the needle bevel.Therefore, it is possible that damage due to retraction during use contributed to the reported and identified issues.However, the definitive root cause could not be determined based upon available information.
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