Rypien was on the way to the visiting locker room in Minnesota on Tuesday night after being assessed a double minor for roughing and a 10-minute misconduct in the second period. Rypien pushed a Wild fan who was applauding at the railing.
He was pulled away by teammate Manny Malhotra and the fan was removed from the area.
Rypien will have a hearing and the length of his suspension will be determined by the NHL.
The Canucks visit Chicago on Wednesday night.
The NHL has handed out five suspensions and issued four fines in the past 10 days.