The most important thing in the world is your child's safety, so if they have been injured you should seek medical care immediately. If there are witnesses who saw the child get injured, collect their names and contact information. It is also important to take down the information of the party responsible for your child's injuries, along with their insurance information if possible. Take photos and collect any other evidence of the causes and injuries to your child. File a police report if necessary. It is highly recommended that you contact an experienced board certificated child injury lawyer to deal with the case for you. Child injury cases are particularly emotional and it is important you have a professional attorney on your side to deal with the insurance company.