Why isn't the gastric balloon weight loss surgery procedure known in the United States?

I am trying to promote the bariatric gastric balloon that I had done here in Colombia to clients from the United States but it seems they've never heard of it. Is it only famous in Europe? I've lost over 120 lbs so far without invasive surgery and I think it's great but it's so hard to get the word out! Check out my site for more info- http://robbielex.web.officelive.com/default.aspx