This situation belongs to the medical damages dispute.
It is recommended that you keep all the hospital records, films, and discharge certificates, and entrust the Judicial Appraisal Center to do two appraisals, one is to prove that the hospital is at fault, the second is to prove that the hospital's fault with the damage caused by the results of the causal relationship between the two appraisals, only these two appraisals are available, you can sue for the lawsuit, or it is very difficult to win the lawsuit, because of the risks of the medical compensation lawsuit is very big.
It is recommended that you do not obtain the relevant evidence before the lawsuit, it is best to bring medical records to my office to give you face-to-face detailed advice, and then take you to the Forensic Science Center to consult with the results of the identification may occur, and then decide whether to do forensic science.