Kostka left the game after the incident during the first period and did not return to the ice.
Pulkkinen was given a major penalty and game misconduct for boarding was assessed on the play.
Tampa Bay Lightning forward Adam Erne also received a suspension.
Erne has been suspended for three pre-season games after an illegal hit to the head of St. Louis Blues forward Vladimir Sobotka in a game on Wednesday in Orlando.
A minor penalty for illegal check to the head was assessed on the play.Suggest a correction