Thanks Aussie. I'm not sure if it's a device you can fit in your room - unless you have a very large house.

It's a table where you stand against, and is then flipped upside down, so you are facing down at an angle of about 30 to 40% (estimate). Your ankles are strapped in, and your body is laying on a rest that is on rollers. You then relax and automatically your body starts "rolling" a few mm downwards due to gravity, thus gently stretching your spine/discs. You do this for 20 minutes a time, and 2 to 3 times a week. After that, it is adviced to walk around/stay busy.

I'm also not sure you can unstrap yourself, so it might be a bit awkward. Also, while it doesn't hurt in your back (much), it does hurt your ankles, especially if you have PN, because most of your weight is held by them.