Abstract: Disclosed is an anesthesia gas delivery device and methods of use therefor. The device comprises an aluminum cover plate, a gas inlet for a carrier gas, a gas outlet for a diluent anesthetic gas, a gas corridor in fluid communication with and extending between the gas inlet and the gas outlet, at least four ultrasound acoustic sensors, at least 2 thermistors, a reservoir comprising a reservoir housing for a liquid inhalational anesthetic, a controller, a graphical user interface, and means for transferring a sample of a liquid inhalational anesthetic from the reservoir to the gas corridor. Methods of providing anesthesia to a subject using the device are also disclosed. These methods comprise using ultrasound and temperature data to determine anesthetic gas velocity, composition and concentration.

Abstract: The present invention solves two main problems inherent to anesthesia design and delivery. By controlling the evaporation of each drop of the liquid agent by providing the required heat at the point of evaporation, an extremely accurate delivery of vaporized anesthestic can be delivered safely to the patient and by using an inexpensive microcomputer, peltier junction or heating element and a liquid tight solenoid or a position controllable stepper motor, the whole machine is much easier and less expensive to construct. This coupled with the simple design of the body being cast in aluminum urethane, the present invention has substantially reduced the cost of manufacture while actually increasing the accuracy of it's output.