The NHL's player safety department tweeted out the punishment.
Stone made a pass in the Jets' zone in the third period and while looking away was leveled by a Trouba elbow to the head. He went sprawling to the ice and then went to the locker room.
The Senators lost the game 3-2, but more importantly lost three players to injury. In addition to Stone, the Senators saw forwards Mike Hoffman and Tommy Wingels leave the game with undisclosed injuries.