Parros was taken off the ice on a stretcher and to a local hospital. Tests indicated that Parros had no additional injuries, TVA Sports reported.
The incident occurred in the third period of the Canadiens' 4-3 victory in Montreal. Parros fell face-first onto the ice and lay motionless for several minutes before he was carted off by medical personnel.
The Pittsburgh Penguins don't expect goaltender Tomas Vokoun to be back for three to six months, general manager Ray Shero has said.
Vokoun is recovering from a blood clot that was removed from his pelvis last month at the start of training camp.
The blood clot was discovered in the 37-year-old Vokoun after a September practice. He was rushed to a hospital and underwent a procedure to dissolve the clot.
Martin Brodeur's streak of starting 18 consecutive season openers for the same franchise will end on Thursday when the New Jersey Devils face the Pittsburgh Penguins.
Cory Schneider will take Brodeur's place in goal for the game in Pittsburgh, bringing an end to Brodeur's NHL record streak that began with the 1994-95 season. The last goalie other than Brodeur to start the Devils' opener was Chris Terreri on October 6, 1993.
Schneider, 27, came to the Devils in a trade with the Vancouver Canucks during the NHL Draft in June. In four preseason games, he posted a 4-0-0 record with a 0.30 goals-against average and a .988 saves percentage with one shutout.