Anesthetic vaporizer with flow and pressure fluctuation compensation function

Abstract

The invention discloses an anesthetic vaporizer with the flow and pressure fluctuation compensation function. The anesthetic vaporizer comprises a fresh gas inlet, a mixed gas outlet, a bypass gas circuit and a carrier gas circuit; a temperature control valve is arranged on the bypass gas circuit; an anesthetic vaporization chamber is arranged on the carrier gas circuit; a curved tube box is also arranged on the carrier gas circuit; a tortuous cavity is formed inside the curved tube box; an inlet of the tortuous cavity is respectively communicated with the fresh gas inlet and an inlet of the temperature control valve; an outlet of the tortuous cavity is communicated with an inlet of the vaporization chamber; an airflow gap for allowing gas to flow into is arranged on the temperature control valve; when flow at the fresh gas inlet increases, the airflow gap becomes small to enable the flow of the fresh gas flowing into the temperature control valve to decrease; and when flow at the fresh gas inlet decreases, the air flow gap becomes large to enable the flow of the fresh gas flowing into the temperature control valve to decrease. The anesthetic vaporizer has the advantages of simple structure, easiness in processing, and convenience in dismantling.

Description

technical field [0001] The invention relates to the field of anesthesia machines, in particular to an anesthesia vaporizer with flow and pressure fluctuation compensating functions. Background technique [0002] The evaporator is an important part of the anesthesia machine. It can effectively evaporate the anesthetic liquid, generate anesthetic evaporated gas, mix it with fresh gas, and accurately input the anesthesia breathing circuit according to the concentration set by the anesthetist, and then output it to the patient. [0003] In practical application, the fresh gas enters the evaporator, and the gas is divided into two paths, one path is called carrier gas, which enters the anesthetic agent evaporation chamber, which can effectively carry out the anesthetic vaporized gas, and the other path is called bypass gas, which passes through the temperature control valve , and then the two gases are mixed into anesthetic gas, which is output to the patient side. The modern an...

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Problems solved by technology

[0006] In the prior art, different types of impedance are added to the appropriate positions of the bypass gas path and the carrier gas path, which has the disadvantages of relatively complex structure, high processing cost, and inconvenient disassembly and assembly.

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