The video shows a close-up of a blood vessel with a blue-colored stent inside it. The stent is designed to keep the vessel open and is made of a flexible material. The blood vessel is surrounded by red blood cells, which are oxygen-rich and carry nutrients throughout the body. The stent is placed in such a way that it allows the blood to flow smoothly through the vessel. The video provides a detailed view of the stent's structure and how it interacts with the blood vessel.