Center Nico Hischier sustained a head injury when he was struck in the visor by a puck on February 27 vs. Washington.
He has a sinus fracture and is currently in concussion protocol. Based on the injury, his timeline is week-to-week, as he undergoes observation, before a return to action.
The club has placed him on injured reserve retroactive to February 27.
Separate, the club has recalled F Janne Kuokkanen from the Taxi Squad.