Patent ID: 8408207

Claim:
A method for providing ventilation gas to a patient during a cardiopulmonary resuscitation cycle including a compression stroke and a decompression stroke of a thorax of the patient, comprising: arranging a distal end of a gas supply tube in a trachea of the patient; supplying said gas to a proximal end of said gas supply tube for delivery of said gas at the distal end of the gas supply tube; operating a switch valve for initiating and terminating the supply of gas via the gas supply tube; receiving a synchronization signal based on a cardiopulmonary resuscitation cycle; synchronizing said operation of the switch valve with said cardiopulmonary resuscitation cycle based on said synchronization signal so that the switch valve operates with the same cycle as the cardiopulmonary resuscitation cycle but off-set in relation to the cardiopulmonary resuscitation cycle; and initiating the supply of gas based on the synchronization signal so that the gas supply is initiated between 25% and 2% of the cycle time before the start of a compression stroke.