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It was reported that the procedure was to treat a heavily tortuous right vertebral artery.The physician chose a 4.5x15mm herculink elite balloon-expandable stent system (bess) as there was no other product option available that was the appropriate size for treatment based on the diameter and length of the vessel.The bess was advanced over the guide wire into the patient; however, the stent dislodged.Currently, the stent remains embedded in an unspecified vessel with no further treatment provided.There was no clinically significant delay reported.No additional information was provided.
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The device was not returned for analysis.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 incidents.A cine was received and reviewed by an abbott vascular clinical specialist.Per the report, treatment was for a heavily calcified right vertebral artery.The physician chose a 4.5mm x 15mm herculink elite balloon expandable stent system (bess) as there was no other product option available that was the appropriate size for treatment based on the vessel.This took place in a remote city which could explain the limited inventory of bess.Regardless of location, the use of the herculink elite bess is off label.The rx herculink elite¿ peripheral stent system is indicated to open lumen restrictions in the biliary tree, renal arteries, and protected peripheral arteries.Vertebral arteries are not considered peripheral.There was no malfunction with the device but, that the device was selected for use in an anatomical location that it was not indicated for.It was reported that the procedure was to treat a heavily tortuous right vertebral artery.It should be noted the rx herculink elite peripheral stent system instructions for use (ifu) specifies: the rx herculink elite¿ peripheral stent system is indicated to open lumen restrictions in the biliary tree, renal arteries, and protected peripheral arteries.It is possible the ifu deviation contributed to the reported event.The investigation determined the reported stent dislodgement appears to be related to circumstances of the procedure.There is no indication of a product quality issue with respect to manufacture, design or labeling; therefore, no product-related corrective action will be implemented in this case.
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