"The fire has been liquidated," the press service of the TASS department quotes.
The explosion of the oxygen booth took place on October 31 at the polyclinic of the city hospital No. 2 in Chelyabinsk.
Because of the fire, 150 people were evacuated.
The Investigative Committee opened a criminal case under the article "Negligence".
The city has declared an emergency situation at the municipal level.