covered stent-graft
Stent with fabric covering used to exclude aneurysms or seal vessel perforations.
Full Definition
A covered stent-graft is a self-expanding or balloon-expandable metallic stent covered with a biocompatible fabric material, typically polytetrafluoroethylene (PTFE) or polyethylene terephthalate (PET), designed to create a new luminal surface that excludes aneurysms from circulation or seals vessel wall defects. These devices combine the structural support of a stent with the sealing properties of a graft, making them ideal for treating aortic aneurysms, traumatic vascular injuries, or iatrogenic perforations. The covered design prevents blood flow into aneurysm sacs or through vessel wall defects while maintaining luminal patency. Covered stent-grafts require precise sizing and positioning to ensure adequate seal zones and prevent endoleaks. They may be modular, requiring multiple components for complex anatomies, or unitized for simpler configurations.
Usage
Usage note: Hyphenation varies; 'stent graft' and 'stent-graft' both acceptable
In Context
- "A covered stent-graft was deployed to treat the thoracic aortic aneurysm and exclude it from circulation." — Endovascular aneurysm repair report
- "The iatrogenic iliac artery perforation was successfully sealed with a covered stent-graft." — Complication management note