Been in similar shoes. It bites!
Being the person I am, I would probably sit the son down and explain to him that he HAS to pitch in, it is what families do! It won't kill him to spend an hour or two doing a few things. A sink full of dishes, the trash, and feed the dog and pick up the poo, maybe an hour, less if he gets his rear in gear.
If he still isn't willing, I would take all the computer cords and put them in the trunk of my car or something, and tell him to get his bum busy if he wants them back.
But, that's just me. Take it for what it's worth.
I had one son who had an accident, surgery, wheelchair, crutches, the whole thing took 4 months. DH, cut off a couple of fingers, plus extenuating injuries, was off work for 15 months. Multiple surgeries, rehab, workman's comp fights, blah, blah, yada, yada. I know how you feel.