Petan, 24, was put on waivers and sent to the Marlies after clearing on Nov. 8. He has one assist in five NHL games this season and has three goals and seven points in three AHL games.
Kaskisuo, 26, is replacing backup Michael Hutchinson, who was placed on waivers Monday. Kaskisuo has never played in an NHL game but has gotten off to a strong start in the AHL this season, posting a 6-1-1 record with a .928 save percentage.
Hutchinson cleared waivers and was loaned to the Marlies Tuesday.