What is the mechanism of balloon deployment for stents?

The deployment of stents using a balloon involves a specific mechanism where the balloon, which is initially deflated and positioned within the artery where the stent is to be placed, is inflated. This inflation exerts pressure on the stent, which causes it to expand and take on its permanent shape, fitting snugly against the walls of the artery or vessel. After the stent is fully expanded, the balloon is then deflated and removed, leaving the stent in place to support the vessel and maintain patency.

This technique is essential because it allows for a less invasive method of placing the stent compared to other methods, thus minimizing damage to the surrounding tissues and reducing recovery time for the patient. The balloon also ensures that the stent is deployed in a controlled manner, allowing for precise placement within the vessel.

The process of balloon inflating and deflating is vital for the effective functioning of the stent, ensuring it maintains its structural integrity post-deployment. This is why the balloon inflation method is the standard approach in interventional radiology for stent deployment.