NEW ORLEANS — Four former NFL players have sued the league and its helmet maker, claiming they hid information about the dangers of brain injury. They want medical care for past, current and future NFL players.

The ex-players — Jimmy Williams, Rich Mauti, Jimmy Keyes and Nolan Franz — filed the federal lawsuit in New Orleans on Sunday.

Last week, the NFL tentatively agreed to pay $765 million to past players with health problems that can be caused by concussions, but some said the amount should have been more.