the Aorta Arch Stent Graft System Combined With the Endovascular Needle System in Situ Fenestration

Inclusion criteria (to be selected if all of the following criteria are met)： * 18 years old ≤age≤80 years old, no gender limitation; * Diagnosis of aortic dissection and reconstruction of the left subclavian artery; * The main branches and branches of the aortic arch at the lesion site have sufficient anatomical basis: * The diameter range of the near-end anchoring zone of the main body of the fixed mechanism: 21-46mm; * The length of the anchor zone near the principal part of the tunnel is ≥10mm; * The length of the anchor zone of the branching vessel of the convex target is ≥15mm; * The diameter range of the distal anchoring zone of the target branching vessel is 5-18mm. * The patient has adequate surgical access vessels; * Patients who understand the purpose of the study, voluntarily participate in and sign informed consent, and are willing to follow up. Exclusion Criteria (If one of the following criteria is met, it will not be selected)： * The patient is pregnant or breastfeeding; * The patient had a history of cardiac surgery (congenital heart disease surgery, heart valve surgery, coronary heart disease surgery, thoracic aortic surgery, etc.), which would affect the implementation of this TEVAR surgery; * The patient has been implanted or planned to be implanted with left ventricular auxiliary pump, interventional valve and other instruments, or is planning to undergo coronary intervention surgery, and aortic dissection is expected to affect the function of…