Silicone 'ping pong ball' implanted in the stomach could help relieve persistent heartburn  

Daily Mail

The device, about the size of a ping pong ball, is stitched to the top of the inside of the stomach via keyhole surgery. https://www.dailymail.co.uk/health/article-9093691/Ping-pong-ball-implant-eases-heartburn.html?ns_mchannel=rss&ns_campaign=1490&ito=1490