The results of the investigation are inconclusive since the reported device was not returned for analysis.Based on the information received, the cause of the reported event could not be conclusively determined.The material inspection report for this guide wire 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#: (b)(4).
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The peripheral viperwire guide wire was used with a non-csi atherectomy device for treatment of a lesion in the anterior tibial artery.The lesion was 300mm long.The brake of the non-csi atherectomy device was cracked, the viperwire was manually held, and the distal end of the viperwire torqued and became coiled.The viperwire broke into four fragments.One fragment was able to be retrieved, and the other three, 1-2mm fragments remained in the vessel.A perforation was observed in the dorsalis pedis after fragment removal.The cause of the perforation was unknown, however, the physician thought the torquing of the viperwire may have contributed.A second viperwire was placed at the lesion, and the procedure was completed with balloon angioplasty.
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