Anesthesia machine and method for allowing anesthesia machine to operate normally when airway pressure sensor of anesthesia machine fails

Abstract

The invention discloses an anesthesia machine which comprises a respiration loop and a sensor. The respiration loop comprises a inhaling branch and an exhaling branch. One end of the inhaling branch is connected with drive air through an inhaling valve. The other end of the inhaling branch is connected with the inhaling end of a patient. One end of the exhaling branch is connected with the exhaling end of the patient, and the other end thereof is connected to the atmosphere through a PEEP valve. The respiration loop further comprises an environment pressure sensor disposed in the respiration loop and an airway pressure sensor disposed at the inhaling end. The anesthesia machine further comprises a control unit, a processing unit and a state judging unit. The anesthesia machine has the advantages that whether the environment pressure sensor and the airway pressure sensor operate normally or not can be obtained by analyzing and judging the numeral values measured by the environment pressure sensor and the airway pressure sensor; if the airway pressure sensor fails, the environment pressure sensor is controlled to measure the pressure in an airway, and normal operation of the anesthesia machine is guaranteed.

Description

technical field [0001] The invention relates to the technical field of monitoring the pressure in the airway of an anesthesia machine, in particular to an anesthesia machine and its normal working method when the airway pressure sensor fails. Background technique [0002] During the use of ventilators and anesthesia machines, it is necessary to detect airway pressures such as peak airway pressure, average airway pressure, inspiratory pause pressure (plateau pressure), and end-expiratory pressure. Moreover, since the airway pressure is constantly changing in each respiratory cycle, it is necessary to use an airway pressure sensor to detect and measure the airway pressure in real time to prevent the airway pressure from fluctuating from high to low and unstable, and to ensure effective ventilation, thereby protecting the safety of the patient and preventing serious complications. [0003] Such as figure 1 As shown, in the existing anesthesia machine or ventilator, generally,...

AI Technical Summary

Problems solved by technology

The airway pressure is detected by an airway pressure sensor, and its detection range is -2KPa to 10KPa. In the prior art, the airway pressure sensor is placed at the exhalation port to detect the airway pressure, and the ambient pressure sensor is directly to the air. If the air If the airway pressure sensor is damaged, the anesthesia machine will not be able to detect the airway pressure, which will cause the machine to fail to work normally, and even cause harm to the patient.

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