balloon-expandable stent
A type of stent that is deployed by inflating a balloon catheter to expand the metal framework against vessel walls.
Full Definition
A balloon-expandable stent is a tubular metal scaffold that is crimped onto a balloon catheter and deployed by balloon inflation to a predetermined diameter. These stents are typically made from stainless steel, cobalt-chromium, or platinum-chromium alloys and are designed with precise radial strength characteristics. Balloon-expandable stents are primarily used in coronary interventions and some peripheral applications where precise deployment and high radial force are required. The balloon is deflated and withdrawn after stent deployment, leaving the permanently expanded stent to maintain vessel patency. This design allows for accurate placement and optimal vessel scaffolding in calcified or fibrotic lesions.
Usage
Usage note: Always specify balloon inflation pressure and final stent dimensions in procedural reports.
In Context
- "A 3.0 × 18 mm balloon-expandable stent was deployed at 14 atmospheres with excellent apposition." — Procedure report
- "Balloon-expandable stents provide superior radial force in heavily calcified lesions compared to self-expanding devices." — Technical review