McElhinney, who turned 30 on Thursday, has appeared in 69 career NHL games with the Calgary Flames, Anaheim Ducks and Ottawa Senators. He has a 19-26-4 record, with a 3.09 goals-against average and an .899 save percentage. In 2012-13, he went 29-6-3 with nine shutouts in 49 games with Springfield of the American Hockey League.
The 24-year-old Melart, signed to an entry-level contract, spent the past several seasons playing in Europe. Last year, he was with HIFK of the Finnish Elite League.
The club has begun to work on a new deal with top goalie Sergei Bobrovsky, who will be a restricted free agent this summer.