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Essentially a long tube is inserted into an artery which leads to the heart. When it reaches the narrowing or partial blockage in the artery, which is creating a problem, a tiny 'balloon' at the end of the tube is inflated. This serves the purpose of pushing the walls of the artery further apart, to increase the diameter. The inflated 'balloon' also stretches a cylindrical structure made of metal mesh, which is located at the tip of the tube. The 'balloon' is then deflated and is removed along with the tube that it is attached to. The wire mesh structure, known as a stent, is left behind. The stent acts as a sort of miniature 'scaffold' which helps the to prevent the artery from narrowing again.

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15y ago

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