Null point calibration method and device of anesthesia machine pressure sensor

Abstract

Disclosed are a zero point calibration method and apparatus for a pressure sensor of an anesthesia machine. The method comprises: performing zero point calibration of an airway pressure sensor of the anesthesia machine (110); restarting and carrying out starting up self-testing (120); and judging whether pressure change values of the airway pressure sensor and an ambient pressure sensor are the same, and if the values are the same, performing zero point calibration of the ambient pressure sensor according to a zero point of the airway pressure sensor (130). The method can realize zero point calibration of a pressure sensor of an anesthesia machine by means of the simple operation, avoiding error in operation.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a zero point calibration method and device for a pressure sensor of an anesthesia machine. Background technique [0002] In an anesthesia machine, pressure parameters are key parameters, which include airway pressure parameters, ambient pressure parameters and gas source pressure parameters. These pressure parameters are all detected by pressure sensors. Usually, special airway pressure sensors and ambient pressure sensors are set in the anesthesia machine to monitor the airway pressure parameters and ambient pressure parameters respectively. [0003] Calibrating the zero point of the pressure sensor is an important operation to maintain the normal use of the anesthesia machine and ensure safety. At present, there are mainly two methods of zero point calibration of pressure sensors. One is to automatically perform zero point calibration after power-on, which is used to automatical...

AI Technical Summary

Problems solved by technology

For automatic zero point calibration, the default sensor has a specific pressure change curve, but it does not pay attention to whether the pressure sensor is really at the zero point pressure when the power is turned on. If the anesthesia machine is not at the zero point pressure after power on, it will cause calibration. mistake

For the special zero point calibration operation, the operation process is complicated, and an additional standard pressure gauge is required to determine the pressure change curve. Such an operation is not conducive to the maintenance of the hospital, requires professional personnel to operate, and is prone to errors

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