Method for leak detection of anesthesia machine system

Abstract

The invention provides a method for the leak detection of an anesthesia machine system. The method comprises the following steps that: each gas passage of the anesthesia machine system, which is communicated with outside, is closed, and the anesthesia machine system becomes a closed containing cavity; an inspiratory valve is opened, the anesthesia machine system is inflated, and simultaneously, a pressure sensor of the gas passages is utilized to monitor the internal pressure of the anesthesia machine system at real time; when the internal pressure of the anesthesia machine system reaches a preset value, the inspiratory valve is closed, and inflation is stopped; the current internal pressure of the anesthesia machine system is detected; the internal pressure of the anesthesia machine system is detected again after a preset time; the decreased pressure difference of the internal pressure of the anesthesia machine system is calculated; and a corresponding data table of the pressure difference and the leak quantity is looked up according to the pressure difference, and the leak quantity leaked by the anesthesia machine system is calculated. The method can accurately detect the gas leak quantity leaked by the anesthesia machine system, and can enhance the moisture control and the monitoring accuracy of the anesthesia machine simultaneously.

Description

technical field [0001] The invention relates to a method for detecting system leaks, in particular to a method for detecting system leaks of anesthesia machines. Background technique [0002] In general, methods for detecting leaks in anesthesia machine systems are: [0003] Close the air inlet of the anesthesia machine system (close the inhalation valve, exhalation valve or switch the anesthesia machine to manual mode), block the air outlet (patient interface) of the anesthesia machine system, and make the anesthesia machine system a closed chamber. Then inflate the anesthesia machine system (according to the rapid oxygen supply), so that the pressure in the anesthesia machine system reaches a certain value, stop inflating, and observe the reading indicated by the pointer of the airway pressure gauge. If the reading pointed by the pointer of the airway pressure gauge continues to fall downwards, it means that the anesthesia machine system is leaking. [0004] The method o...

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Problems solved by technology

[0004] The method of observing the pressure gauge has a relatively large error. It can only observe the basic situation of the leakage of the anesthesia machine system, but it cannot know the specific leakage of the anesthesia machine system. Only qualitative analysis can be performed, and quantitative detection cannot be performed.

Then the leakage cannot be compensated during the tidal volume control and monitoring of the anesthesia machine, and the accuracy of tidal volume control and monitoring will be reduced

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