Is there an exercise machine for the upper body that is hard to fall from?

My husband spends all day in his recliner and falls down to the ground about twice yearly. Getting up takes twenty minutes. He appears very strong but his muscles are atrophied. He needs an upper body exerciser; we have a treadmill he devotes 3 minutes a day to using. His legs are thin now and used to be muscular before he had a hip replacement after a hospital fall. He won’t use free weights. TIA