The guide wire was returned to csi with a fracture within the spring tip.Scanning electron microscopic analysis revealed evidence of a ductile torsional failure.The reported event was confirmed, however, the root cause was unable to be determined.The material inspection report for this guidewire lot number has been reviewed.No issues or discrepancies were noted during this review that would have contributed to the reported event.The device met material, assembly, and quality control requirements.Csi id: 12524.
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