Kiprusoff was injured in Calgary's 4-1 win over the Detroit Red Wings on Tuesday.
Kiprusoff was added to the IR retroactively and is considered day to day with a lower-body injury. Backlund is expected to miss four to six weeks.
The team also recalled center Ben Street from the Abbotsford Heat of the American Hockey League.
Street leads the Abbotsford Heat this season with 12 goals and 19 assists in 44 games. He signed with Calgary last summer as a free agent.
Calgary's next game is Saturday night in Vancouver against the Canucks.