Correct. Actually, at the risk of sounding like I'm making another product placement, this whole thing happened becaues a friend-of-a-friend shared an ad for Vivos that she had worked on (it's a funny but long commercial for a device that appears to work somewhat similar to a MAD, but different). I ...

It looks like there is a company in Taiwan trying to develop a negative pressure therapy system -- http://www.somnics.com/ -- I found them after coming across https://www.omicsonline.org/open-access/pilot-study-of-oral-negative-pressure-therapy-for-obstructive-sleep-apneahypopnea-syndrome-2167-0277-...

Sadly, the company is no more, as you probably know by now. The main issue with buying a used machine is that the mouthpiece has to be sized to your mouth - part of the process of getting setup with a Winx was to get your dental impression to select the correct size. Without that process, you're lik...