Ankura™ TAA Stent Graft System Post-Market Clinical Follow-up Study

Who can take part

• Patient has descending thoracic aortic aneurysm (DTA) or type B aortic dissection (TBAD), who needs endovascular repair (TEVAR)
• Life expectancy > 1 year
• Patient or legally authorized representative understands the nature of the clinical trial, agrees to its provisions, agrees to comply with the requirements of the study including a 3-year follow-up, and signed applicable Informed Consent Form
• Patient's characteristics consistent with Ankura™ Stent Graft System IFU and sizing guidelines, which indicate as following:; For descending thoracic aortic aneurysm (DTA) patient:; Adequate iliac/femoral access vessel that is compatible with the required delivery system; Aortic inner diameter in the range of 18-42mm; ≥15mm non-aneurysmal aorta proximal and distal to the lesion; Morphology suitable for endovascular repair; For type B aortic dissection (TBAD) patient:; Adequate iliac/femoral access vessel that is compatible with the required delivery system; ≥15mm landing zone proximal to the primary entry tear; proximal extent of the landing zone must not be dissected. Diameter at proximal extent of proximal landing zone in the range of 16-44mm; ≥15mm landing zone distal to the primary entry tear; distal extent of the landing zone must not be dissected. Diameter at distal extent of distal landing zone in the range of 16-44mm; Morphology suitable for endovascular repair

Who cannot take part

• Myocardial infarction or stroke within 3 months prior to the procedure
• Participant in other drug or medical device clinical trials
• Patient with any contraindications mentioned in the Ankura™ Stent Graft System IFU:; Patients with acute systemic infection; Patients who have had other devices implanted in the cardiovascular cavity, which will interfere with the placement of this device; Patients with mesenteric blood flow mainly supplied by the inferior mesenteric artery; Patients who have allergic reaction to the device; Patients who are not suitable for endovascular repair in vascular morphology; Patients who cannot tolerate contrast agents due to severe renal insufficiency; Patients who are allergic to contrast agents; Aneurysms neck with thrombus; Non-aneurysmal aortic proximal neck length <1.5cm; Non-aneurysmal aortic distal anchorage zone <1.5cm; For aneurysms, Non-aneurysmal aortic diameter <18mm or >42mm. For Type B dissections, Non-aneurysmal aortic diameter <16mm or >44mm
• Patient with hereditary connective tissue disease, including but not limited to Marfan Syndrome or Ehlers-Danlos Syndrome
• Patient with an unstable angina pectoris or hearth insufficiency New York Heart Association Functional Classification (NYHA) 3 or 4
• Patient with access vessel which are to tortuous, narrow or any kind of reasons that would lead to failure of introduction and advancing an introducer sheath
• Any condition (medical or anatomic) which makes the patient not suitable for endovascular repair according to the opinion of the investigator
• Age<18 Years or Age> 85 Years
• Patient with traumatic aortic injury
• Patient with uncorrectable coagulopathy
• Patient with morbid obesity, weight greater than 350 Pounds (150kg), or who cannot undergo accurate fluoroscopy examination due to obesity
• Pregnant or plan to be pregnant or breast feeding
• American Society of Anesthesiologists Physical Status Classification (ASA) classification 5 or higher