Introduction to Anesthesia Machine Evaporator

Introduction to Anesthesia Machine Evaporator

      The anesthesia evaporator is an important component of the anesthesia machine, and its quality not only indicates the level of the anesthesia machine, but also relates to the success or failure of inhalation anesthesia, directly affecting the safety of the patient. So when using an anesthesia machine, it is necessary to carefully check the evaporator and monitor its output concentration if necessary.

      In inhalation anesthesia, gas anesthetics (such as nitrous oxide) can be controlled by a flow meter to regulate their concentration entering the anesthesia circuit. Liquid volatile inhaled anesthetics, such as ether, fluorothane, ethrane, forahe, sevoprane, etc., are not allowed to enter the respiratory tract directly, and are not allowed to enter the respiratory tract in the form of saturated vapor. Because most volatile inhaled anesthetics can achieve anesthesia at very low levels of brain stimulation. Most volatile inhaled anesthetics have a high saturation vapor pressure (for example, the vapor pressure of halothane at 20 ℃ is 32 4 kPa), but the brain partial pressure required to produce anesthetic effects is less than 2 27kPa, therefore a certain control method must be adopted to allow patients to accurately inhale a certain concentration of anesthesia vapor according to the adjustment of the anesthesiologist. Otherwise, drug overdose will quickly occur and harm the patient.

      An anesthesia machine evaporator is a device that can convert liquid volatile inhaled anesthetics into vapor and deliver a certain amount into the anesthesia circuit. Its function is to: ① effectively evaporate volatile inhaled anesthetics; ② Accurately control the output concentration of volatile inhalation anesthetics. With the successive application of various potent volatile inhalation anesthetics in clinical practice. The relationship between evaporators and anesthesia safety is closer, and the quality requirements for evaporators are also higher. The ideal anesthesia evaporator should be easy to operate, precise and durable, unaffected by many factors such as temperature, flow rate, pressure, etc., lightweight, corrosion-resistant, absolutely safe and affordable.