It was reported the procedure was performed to treat a moderately calcified lesion in the distal superficial femoral artery (sfa).Pre-dilatation with an unspecified 6.0 mm balloon catheter was performed.The supera self-expanding stent system (sess) was advanced to the target lesion with no difficulties through a 6fr sheath.The sess began deploying per the instructions for use at the target lesion; however, during deployment the stent became stuck in the distal end of the sheath and when the stent delivery system was withdrawn, the stent became stretched and the nosecone separated.But because the vessel was perfectly sized, the stent normalized and jumped proximally in an unintended site.The nosecone remained on the guide wire.A snare device was used to help retrieve the nosecone successfully.The stent remains stable in healthy tissue.A non-abbott stent was used to cover the lesion successfully.There was no resistance during advancement or during deployment of the device.The patient remained stable.No additional information was provided.
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Exemption number e2019001-permits numbering sequence to begin with 10000, to avoid duplication of report numbers due to process transition.There may be gaps in numbering for reports submitted during the transition period.Visual analysis was performed on the returned device.The reported deployment issue and malposition of the stent could not be confirmed as it was based on case circumstances.The tip detachment was confirmed.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history revealed no other similar complaints.The investigation was unable to determine a cause for the reported difficulties.It may be possible that the distal sheath of the supera delivery system was entrapped or restricted within in the anatomy such that the ratchet was unable to engage the stent properly preventing full deployment; however, this could not be confirmed.The tip separation likely occurred as the partially deployed stent was being withdrawn into the introducer sheath causing malposition of the stent and the tip to separate due to the reduced clearance.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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