Raymond was hurt 20 seconds into the game when he got tangled up awkwardly with Boston defenseman Johnny Boychuk. Raymond was bent at the waist with Boychuk's stick between his legs when Boychuk ran him backward into the boards near Boston's net.
Raymond stayed facedown on the ice for several minutes before his teammates helped him off. He wasn't moving his legs as his teammates guided him to the bench.
The Canucks refused to disclose the nature of Raymond's injury but said he had been taken to a local hospital for evaluation.
"It's tough. He's a key part of the team. He brings a lot of speed to that line," Daniel Sedin said. "He's dangerous every shift he's out there. ... I don't know how bad it is with him but if he can't pla,y we've had guys step in all year."
Raymond has struggled on Vancouver's second line in the postseason, managing just two goals and six assists. He hadn't scored in the Canucks' previous seven playoff games, including the entire Stanley Cup finals.
Vancouver yielded four goals to the Bruins in a 4:14 span shortly after Raymond's injury, and trailed 4-0 after the first period of a potential Stanley Cup-clinching game. Boston forced a Game 7 in Vancouver on Wednesday with a 5-2 victory.
The Canucks already are playing without injured defenseman Dan Hamhuis, who got hurt in Game 1, and forward Mikael Samuelsson. Second-line center Ryan Kesler and defenseman Christian Ehrhoff also are playing through undisclosed injuries.
Information from The Associated Press contributed to this report.