The product was not returned to abbott vascular for analysis.A review of the lot history record identified no manufacturing non-conformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other similar incidents and/or complaints reported from this lot.Factors that may contribute to stent dislodgement include, but not limited to; improper or inadequate crimping at the time of manufacture, incorrect sheath sizing, positive pressure during preparation, forced sheath removal, handling of the stent during preparation, and interaction with the lesion, accessory devices, and/or previously implanted stents.To ensure this is not the result of a manufacturing issue, all stent delivery systems are inspected for proper stent placement, stent damage and crimped stent outer diameter.The investigation was unable to determine a conclusive cause for the reported stent dislodgement.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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It was reported that prior to use in the patient and during device preparation, the xience sierra stent dislodged from the balloon.There was no difficulty removing the protective sheath/stylet and no damage to the outer or inner packaging.There was no patient involvement, and no clinically significant delay in the procedure.No additional information was provided regarding this issue.
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