I don't know about
those, but I have seen the pictures of them. I have a herniated disc at the same place. I have been doing inversion therapy which seems like it is similar. I am letting gravity stretch and de-compress that disc....well that is the goal anway. I have been doing this three times a day for about
3 weeks now. I have also seen a PT on correct posture and helpful exercises. I am hopeful! I definitely see a decrease in pain.
I hope this device helps your companion.