Yup, this is post-surgical pain relief. It makes absolutely everything numb. Nerve blocks are difficult to do right so unless an anesthesiologist offers it, it's best not to request it. I got one for my shoulder surgery back on 2007. It was the coolest thing ever. It wasn't the same one that you listed, but my shoulder/pec minor, lower neck region was all completely numb but I could still feel and use my hand (as much as the sling allowed). It works for about 24 hours so all that intense first day pain is just non-existant and allows you to get your pain med load in so you have virtually no post-op pain. It was great. It blocks the nerve, but you don't feel the skin, muscle, ligaments, tendons etc either :-)