A magnetic bracelet that sits inside the body could be a radical new treatment for heartburn. The bracelet is made up of a dozen titanium beads, each of which contains a tiny magnet.
The device is fitted around the bottom of the oesophagus - the 'pipe' through which food travels to the stomach. Once in place, the magnets pull together. This stops acid from the stomach leaking back up into the oesophagus and burning its delicate lining, causing heartburn.
When the patient swallows, the beads are gently forced apart, sliding along the tiny metal arms that link them together. This allows food to pass through into the stomach. Once it has, the magnets pull together again to form a seal.
Around 150 patients in the U.S. have already been fitted with the revolutionary device, and results have been very encouraging.