Endovascular repair of descending aorta lesions using a second-generation unibody single-branched stent-graft: a technical note.

Two patients with type B aortic dissection (TBAD) extending to the distal aortic arch were successfully treated with the Cratos single-branched stent-graft.

• Both patients presented with TBAD extending to the distal aortic arch
• The primary entry tear was located just distal to the LSA in zone 3 in both cases
• Both cases required zone 2 landing for adequate proximal seal
• Treatment was performed as a one-stage endovascular repair

The Cratos device achieved complete exclusion of the entry tear and preservation of left subclavian artery (LSA) flow in both patients.

• No endoleak was observed during follow-up in either patient
• No neurological complications were reported during follow-up
• LSA revascularization was accomplished simultaneously with primary entry tear exclusion
• The unibody single-branched configuration allowed simultaneous exclusion and revascularization in a single procedure

The Cratos stent-graft is a second-generation evolution of the Castor single-branched stent-graft with several design improvements.

• The device features an outer unibody branch configuration
• It incorporates an adjustable proximal stent segment that optimizes sealing and reduces the risk of bird-beak formation at the proximal landing zone
• A reinforced branch-main body junction enhances fatigue resistance and long-term durability
• The design allows simultaneous exclusion of the primary entry tear and revascularization of the LSA