What injuries would he get? (Unfortunately most bridge jumpers die, so it's hard to find data. :( ) I would imagine lots of bruises, broken ribs, maybe a ruptured organ (from the impact), maybe a sprained/broken wrist/ankle if it was in a weird direction upon entering the water. I think he would have landed belly-flop style given how the pulley system attaches to him.
After using the bridge as his escape method, he eventually returns to society. (Everyone thinks he's dead -- the threat has passed and he is no longer being chased down) He intended to come back sooner, but his injuries impeded his movement - he's probably in worse shape than after the initial event. :( What injuries would get worse or appear given the fact that he has to move? (Assume he has basic medical supplies and first-aid knowledge)
He gets rushed to the hospital (would he be put in ICU?) and once he is stabilized, he gets morphine to fall asleep. Is this the right medication? How long would it take for it work when administered through an IV? Would it immediately knock him out or would he slowly start to fade out? Is it possible to have some kind of fleeting moment of panic right before it starts working? How many IVs will he have? [All of the searches I've done only talk about either smaller doses where it's only used for pain management or people trying to get high off of it, not 'there's so much pain and he needs sleep'...maybe I'm thinking about this wrong.]