Claude Giroux hit on Patrice Bergeron...

Here is the video to the hit that injured Bruins forward Patrice Bergeron. I don't think it was a dirty hit by the Flyers Claude Giroux, I have watched the hit about 5 times I don't see any thing that was out of the ordinary, it appears to be a legal and hard hockey check... I am hoping that Patrice Bergeron doesn't have a concussion and that he left the game as a pre-caution.