Precise propelling type electronic anesthesia machine

Abstract

The invention provides a precise propelling type electronic anesthesia machine which is characterized by being provided with an anesthetic propelling unit, a pressure and flow testing unit and a control unit. An anesthetic mixing unit is provided with a heating constant temperature unit. The anesthetic propelling unit is a precise injection unit and comprises an injection pump, a propelling controller and a stepping motor with a reduction gearbox. The pressure and flow testing unit comprises a pressure sensor and a flow sensor. The control unit comprises a signal processing module, a motion execution drive module and a single-chip microcomputer. The heating constant temperature unit is a PID intelligent temperature controller provided with a temperature sensor. According to the precise propelling type electronic anesthesia machine, anesthetic is directly injected into an anesthetic mixing and volatilizing cavity, heated in real time and controlled accurately, and therefore control of the vaporizing and volatilizing process of the anesthetic is economical, precise, accurate and stable. A volatilization core does not need to be adopted, requirements for the initial amount of the anesthetic can be avoided, the range of the applicable anesthetic is wide, generality is strong, a user can switch different kinds of the anesthetic conveniently, and convenience is brought to application in the animal experiment field.

Description

technical field [0001] The invention relates to an anesthesia machine, in particular to a precision propulsion electronic anesthesia machine. Background technique [0002] The mechanical anesthesia machine used in the existing gas inhalation anesthesia method maintains the stability of the gasification and volatilization of the anesthetic agent through the anesthetic drug volatilization tank to adjust the temperature change and flow rate change, and completes the anesthetic agent from liquid to gaseous state control mode and gas mixing by different loop methods Then the mixed gas is sent directly or through the ventilator or air bag into the alveoli of the animal to form the partial pressure of the anesthetic gas, which diffuses into the blood and directly inhibits the central nervous system to produce the effect of general anesthesia. Its main defects are as follows: [0003] To maintain the vaporization and volatilization stability of the anesthetic, the size of the anest...

AI Technical Summary

Problems solved by technology

[0004] A minimum initial amount of anesthetic of about 40ml is required to adhere to the volatile core, and the controllability of volatilization is poorly controlled by increasing the surface area, and the anesthetic attached to the volatile core will be wasted when left for a long time after use;

[0005] When used in a place without a central gas supply system, the internal serpentine loop adjustment of the anesthetic drug volatilization tank cannot effectively avoid the influence of the flow and pressure changes of the gas in the tank on the concentration stability of the anesthetic agent after volatilization and mixing;

[0006] Adjust the anesthetic concentration by adjusting the concentration knob and scale, which has low precision and poor readability;

[0007] Poor versatility, for different anesthetics with different volatility and temperature characteristics, different designs of anesthesia machines are required, which is inconvenient to switch between different anesthetics, which relatively increases the cost of equipment

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