I'm going through one now. There are different kinds.
Suing my mom's nursing home was harder due to teeny intricate reasons. My present lawsuit is a civil case (wrist nearly bitten off.) He was already found and pleaded guilty in the criminal case.
You have to find a lawyer who specializes. I don't know if this helps, but it is a long drawn out ordeal and very stressful. Get doctor/hospital records, keep a diary for yourself, keep receipts. IS this the info you wanted? You can PM me.