The anesthesia machine on the market at present only has two kinds of pneumatic electric control and electric electric control. The difference between the two is only the difference in the working principle of the ventilator. Pneumatic electric control is by the hospital center gas pressure or cylinder pressure as the driving force, driving a cystic air box for the patient gas supply; electric electric control is completely by the internal metal cylinder piston movement as the driving force to drive the gas for the patient gas supply. From the principle, electric control seems to be easier to accurately control the volume of the output gas, but the pneumatic electric control is more responsive to the human body, so that the gas input closer to the body's own breathing, reducing patient discomfort, accelerating the patient's wake-up speed, and improving the patient's ability to recover from breathing on their own.
On the market today, only a few manufacturers use electric controls, and most use pneumatic controls. It is not that electric control is a highly sophisticated technology that is not easy for others to achieve, but the concept and focus of each manufacturer is different. In clinical use, this difference in working principle in actual use does not have a big impact.