sandwich technique
A stenting method where a covered stent is placed between two uncovered stents to treat complex lesions while preserving side branch patency.
Full Definition
The sandwich technique is a specialized endovascular approach used primarily in treating complex aortic lesions, particularly those involving branch vessels. This method involves deploying a covered stent-graft between two uncovered stents, creating a 'sandwich' configuration. The technique allows for sealing of the primary lesion while maintaining perfusion to critical side branches through the fenestrations created by the uncovered stents. It is commonly employed in treating thoracoabdominal aortic aneurysms and complex iliac artery lesions where standard stent-grafting might compromise vital branch vessel flow. The procedure requires precise planning and sizing to ensure adequate overlap and seal zones.
Usage
Usage note: Distinguish from other multi-stent techniques; specifically refers to the covered-uncovered-covered configuration.
In Context
- "The surgeon opted for a sandwich technique to preserve renal artery flow while treating the complex aortic aneurysm." — operative report
- "Pre-procedural imaging confirmed the feasibility of the sandwich technique for this challenging thoracoabdominal repair." — case planning documentation