He was outstanding throughout his 22 playoff games, tying for the team lead with nine goals, including two winners in overtime.
The second-line center played the last game of the finals with a broken rib on the left side and a separated right shoulder. After that 3-2 loss, when Chicago came from behind with two goals in the last 1:16, he was hospitalized with a punctured lung. He was released two days later.
Doctors have told him he could resume working out on July 22, four weeks after the injury. He needs that time to heal from the procedure in which a hole was put in his ribcage to allow air out and let the lung re-inflate.
"It's really more of my lungs than anything else," Bergeron said. "My shoulder and my ribs are feeling better."
A talented playmaker and checker, he won the Selke Trophy in 2011-12 as the top defensive forward in the NHL.
He led the league in 2012-13 in faceoff percentage, winning 62.1 percent of them. In his nine seasons, he has 153 goals and 280 assists. He had 10 goals and 22 assists last season.
In 83 playoff games, Bergeron has 20 goals — none bigger than the two he scored in Game 7 of the opening round this season against Toronto.
The Bruins won three of the first four games before the Maple Leafs won the next two and led 4-1 with less than 11 minutes left in the third period. Nathan Horton cut the lead to 4-2, Milan Lucic scored an empty-net goal with 1:22 left and Bergeron tied it with another empty-netter with 51 seconds remaining in regulation.
Then he won the game — and the series — with a goal at 6:05 of overtime.
Chiarelli said Bergeron signed even though he could have gotten more money on the open market after next season.
"He embodies a lot of what the Bruins stand for," Chiarelli said. "He's a responsible player. He's a hard player. He's a leader. He's a clutch player. He's just (had) a classic way of carrying himself that I like to be part of and the Bruins like to be part of."