Jordan Adam Criado, 51, was discharged from the Rogue Valley Medical Center in Medford and was immediately taken to the Jackson County Jail.
Criado was in hospital as a result of smoke inhalation in the July 18 fire and was unconscious and on a ventilator for days.
Criado's wife Tabasha and children died following the blaze at their home in Medford, Oregon.
Firefighters desperately gave CPR to the family on the lawn in front of their home, but quickly realised they also had stab wounds.
The deaths of Mrs Paige-Criado, 30, and her children - Elijah, 7; Isaac, 6; Andrew, 5; and Aurora, 2 — was officially listed as smoke inhalation. Stab wounds to the neck were listed as an additional cause of death for Isaac and Andrew. Read More