Patent ID: 7981072

Claim:
A gas supply apparatus comprising: a gas supply source that supplies predetermined gas; a first delivery channel that delivers the predetermined gas supplied from the gas supply source into a lumen of a patient; a second delivery channel that delivers the predetermined gas supplied from the gas supply source into a lumen of the patient; a pressure regulator that regulates a pressure of the predetermined gas supplied from the gas supply source including: a first pressure value suitable for the abdominal cavity when the predetermined gas is delivered by the first delivery channel, and a second pressure value suitable for the lumen when the predetermined gas is delivered by the second delivery channel; a first pressure measuring unit that measures a pressure of gas in the first delivery channel; a second pressure measuring unit that measures a pressure of gas in the second delivery channel; an input unit that inputs a first instructed value as a first pressure setting for the abdominal cavity and a second instructed value as a second pressure setting for the lumen; a setting unit that, when at least one of the first and second instructed values are inputted by the input unit, forcibly sets, based on the at least one of the first and second instructed values, the second pressure setting to be greater than the first pressure setting; and a controller that controls the pressure regulator based on a result of the measurement of the first measuring unit, a result of the measurement of the second measuring unit, the at least one of the first and second instructed values inputted by the input unit, and a result of the second pressure setting of the setting unit.