self-expanding stent

Full Definition

A self-expanding stent is constructed from shape-memory alloys like nitinol that allow the device to expand automatically to a predetermined diameter once released from its delivery system. Unlike balloon-expandable stents, these devices do not require balloon inflation for deployment and can continue to expand gradually after placement. They are particularly useful in vessels subject to external compression or tortuous anatomy, such as carotid arteries or peripheral vessels.

Usage

Usage note: Distinguish from balloon-expandable stents in procedural documentation.

In Context

• "The physician selected a self-expanding stent for the carotid intervention due to the vessel's susceptibility to external compression." — Procedure report
• "Post-deployment imaging confirmed adequate expansion of the self-expanding stent without need for post-dilatation." — Clinical documentation