In Wednesday's game against Dallas, Carlsson was missing from Anaheim's squad due to what was then described as a lower-body injury.
On Friday, the Olympic qualifier underwent surgery for the injury, which is said to have been in his left thigh. He is now expected to be out of action for between three and five weeks.
On February 11, Tre Kronor will play their Olympic debut in Milan, but the injury list is starting to grow. Among the NHL stars currently unavailable are Gabriel Landeskog (Colorado), Victor Hedman (Tampa Bay) and Erik Karlsson (Pittsburgh).
Carlsson has scored 44 points in as many games this season.
