Safety and Efficacy of Valiant Mona LSA Stent Graft System

Inclusion Criteria:

- Subject is at least 18 years of age.

- The subject or legal guardian understands the nature of the study and agrees to its
provisions on a written informed consent form

- Subject must be considered a candidate for revascularization of the LSA.

- Subject has a DTA which will require coverage of the LSA

- Subject's anatomy must meet the anatomical criteria to receive that implanted device

Exclusion Criteria:

- Subject has had previous endovascular repair of the ascending and/or descending
thoracic aorta.

- Subject is in acute renal failure or has renal insufficiency with a serum creatinine ≥
2.0 mg/dL

- Subject is a pregnant female.

- Enrollment in another clinical study

- Subject has had a cerebral vascular accident (CVA)or myocardial infarction (MI) within
3 months.

- Subject has a history of bleeding diathesis, coagulopathy, or refuses blood
transfusion.

- Subject has a known allergy or intolerance to the device components.

- Subject has a known hypersensitivity or contraindication to anticoagulants or contrast
media, which is not amenable to pre-treatment.