It's early days for this device Ric.ror.
If you look at the small print at the bottom right it says
"The AspireAssist is not approved for sale in the United States and is limited by United States law to investigational use."
In fact it has not yet got FDA approval; this was only applied for four weeks ago.
http://aspirebariatrics.com/what-to-expect/
The UK MHRA - Medicines and Healthcare products Regulatory Agency - has nothing yet on its website that I can see about this device or its safety. I presume this is why it is only available in the private sector.