I recommend you try the BeiKang mid-frequency electrotherapy device. This thing is really good. I was hospitalized for a few days due to lumbar disc herniation some time ago. The hospital used BeiKang. I think the effect is very good. I bought one to use at home. I have a bit of pain in my legs after a day at work. I want to treat it after get off work. It can greatly relieve the pain. I highly recommend it.