Cardiopulmonary resuscitation system

A cardiopulmonary resuscitation system comprising:

• a sternum compression unit that includes an impact hammer for compressing the chest of a patient and repeats a sternum compression cycle having, as one cycle, a compression period in which the impact hammer is pressed against the chest and a recoil period in which the impact hammer is separated from the chest and which be performed succeeding to the compression period;
• an artificial respiration unit that repeats an artificial respiration cycle having, as one cycle, an inhalation period in which respiratory gas is supplied to the patient and an exhalation period in which supply of the respiratory gas is stopped and can supply oxygen administering gas for passive oxygen inhalation to the patient during the recoil period;
• and
• a controller that controls the artificial respiration unit and/or the sternum compression unit, wherein
• the control controller judges, for each recoil period, whether supply of the oxygen administering gas is required and sends a supply instruction signal to administer the oxygen administering gas to the artificial respiration unit unless it is judged that supply of the oxygen administering gas is not required.