McElhinney didn't see any action with the Lightning, who acquired him in a trade with Anaheim last week.
In 21 games with the Ducks this season, he went 6-9-1 with a .890 save percentage and 3.43 goals-against average.
Carson has split time this season between the Hurricanes and
Charlotte of the AHL. In 72 career NHL games, Carson has two goals,
10 assists and 20 penalty minutes.
The defenseman is no stranger to his new city, having played for
the Western Hockey League's Calgary Hitmen from 2002 to 2006. Carson was
chosen by Carolina in the fourth round of the 2004 draft.
Information from ESPN.com's Pierre LeBrun and The Associated Press was used in this report.