He didn't return.
"Obviously, he's got a head injury and probably a little bit of whiplash going on right now," Flyers general manager Paul Holmgren said. "He seemed OK after the game. We're just going to have to wait and see how he is (Saturday)."
No penalty was called on the play.
The Flyers were already without forward Scott Hartnell (broken foot) and defenseman Andrej Meszaros (shoulder). Forward Danny Briere was playing in his fourth game this season after missing the start of the season with a fractured wrist.
Simmonds entered the game with five points in seven games this season, averaging more than 18 minutes of ice time per game.
Information from The Associated Press was used in this report.