On (b)(6) 2020, the patient underwent endovascular treatment of a thoracic aortic aneurysm using a conformable gore® tag® thoracic endoprosthesis with active control® (ctag ac).Patient anatomy included a bovine arch, where the left common carotid artery bifurcated from the innominate artery.A left subclavian artery to left common carotid artery bypass procedure was performed.The physician then attempted to implant the ctag ac just below the bifurcation of the innominate artery and the left common carotid artery.During operation of the secondary deployment handle, the ctag ac moved proximally approximately 3mm and the bovine arch was unintentionally partial covered by the ctag ac.It was reported to gore that there were no abnormalities noted during the deployment.The deployment was in accordance with the instructions for use.It was observed that the blood pressure of the left common carotid artery decreased.Therefore, as treatment, an epic® stent was implanted in the bovine arch.The blood pressure of the left common carotid artery recovered and the procedure was completed.The patient tolerated the procedure.
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