It was reported that the procedure was to treat a heavily calcified vessel in the left carotid artery.The emboshield nav 6 embolic protection system (eps) was used and the barewire was switched to the 315mm.The filter was deployed.No pre-dilatation was performed.The xact carotid stent system was attempted to be advanced on the barewire but there was resistance and it only made it into the sheath.It was attempted to remove the delivery system but it could not be removed even with push and pull action.Ultimately there was no way to retrieve the filter, so the filter was removed open and together with the xact stent, that was not deployed, and was pulled as one unit.Another eps, xact stent and barewire were used to complete the procedure.There was no adverse patient effect.There was a delay in the procedure as all the devices had to be taken from a different department but there was no harm to the patient.No additional information was provided.
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A visual inspection was performed on the returned ses, and the reported difficulty to advance and remove were 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 identified no other similar incidents reported from this lot.The investigation determined the reported difficulty to advance and remove appear to be related to case circumstances of the procedure.Based on the reported information, there was no pre-dilation of the heavily calcified vessel.It is likely that difficulty to advance was due to the heavy calcification.Manipulation against resistance likely caused damage to the inner lumen of the xact device and barewire freezing in place resulting in the difficulty to remove and partially deploying the tip of the stent.The noted bends and coil damage on the barewire likely occurred post procedure or during packing for return analysis.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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