Yes, I used a wound vac Oct and early Nov 2016. I probably had it on about about 5 wks or so. It's a interesting process, but not painful at all.
I had a lot of numbness from the surgery yet, so there was cleansing and debridement of the wound, then packing with the special foam used with vac. I had no drainage to mine, so my collection canister never had anything in it. But since the company send me a full box of the canisters I did have it changed out once.
Usually you go 3x's a wk for dressing changes at a hospital, clinic, wound care office. They remove the packing and measure the wound and make note of how much of a change from one visit to the next.
The wound vac stays on, other than to shower, when you do shower you will be asked to cover your wound, a good covering is press and seal wrap. ( works better than saran wrap that I had used prior to help keep the wound dry.)
The vac has a battery pack that will run a good 8+ hrs, and then in the evening while relaxing or bed time you can plug it in and allow it to recharge, mine had a little purse like bag I wore that held the unit, the tubing from the wound ran up my leg and out the top of my pants. ( I bought some stretch type pants with extra room in the legs, pretty in expensive at Walmart and comfortable.)
These people that work with these units are wonderful and know there stuff, as it's important to get it packed and get a good seal over the wound, they will show you how to deal with a leak if you get on your wound with the vac. I had to give mine up a couple weeks prior to being completely closed and use a different method as I got like a road rash under the draping for the wound vac, that itch, stung and was sore on the good skin around the wound. But these folks have lots of great ways to heal a wound, they just used a different method those last couple weeks. If given the chance to use a wound vac, I would recommend going that route the biggest down fall is going in for dressing changes. ( the whole process would have been easier for me had I not started back to work full time and was still dealing with energy drain big time.) If you can think of anything else you would like to know just ask, I kind of rattled on here for you. Take care. zzevi