I Swallowed a Balloon For Weight Loss and Lost 40 Lbs. Dana Goossens, 29, lives in Illinois and participated in a recent clinical trial for a weight loss device called the Obalon Balloon System. She forwarded me an article about a new device called the Obalon Balloon System. Balloon. The balloon is swallowed like a pill, and has a long thin tube attached. More obese patients in the UK should be offered weight loss.