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Method and device for calibrating expiratory flow sensor of anesthesia machine

A flow sensor, anesthesia machine technology, applied in the direction of sensors, respirators, diagnostic recording/measurement, etc.

Active Publication Date: 2020-10-16
GE MEDICAL SYST GLOBAL TECH CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the existing methods for calibrating the expiratory flow sensor all need to temporarily change the connection relationship of the parts in the anesthesia machine for the calibration work, and then restore the original connection state after the calibration is completed

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  • Method and device for calibrating expiratory flow sensor of anesthesia machine
  • Method and device for calibrating expiratory flow sensor of anesthesia machine
  • Method and device for calibrating expiratory flow sensor of anesthesia machine

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Embodiment Construction

[0014] Specific implementations of the present invention will be described below. It should be noted that in the process of specific descriptions of these implementations, for the sake of concise description, it is impossible for this specification to describe all the features of the actual implementations in detail. It should be understood that, in the actual implementation process of any embodiment, just like in the process of any engineering project or design project, in order to achieve the developer's specific goals and to meet system-related or business-related constraints, Often a variety of specific decisions are made, and this can vary from one implementation to another. Furthermore, it will be appreciated that, while such development efforts may have been complex and lengthy, for those of ordinary skill in the art to which the present disclosure pertains, the disclosures disclosed in this disclosure Some design, manufacturing or production changes based on the techni...

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Abstract

The invention relates to a method and device for calibrating an expiratory flow sensor of an anesthesia apparatus. The method comprises: enabling a simulated lung disposed on the anesthesia apparatus to inhale through the anesthesia apparatus; recording tidal volume provided to the simulated lung by the anesthesia apparatus; recording a reading of the expiratory flow sensor when the simulated lung exhales; and calculating an expiratory flow value corresponding to a point value to be calibrated, according to the tidal volume, the reading and a preset point value to be calibrated.

Description

technical field [0001] The invention relates to the technical field of flow sensors, in particular to a method and device for calibrating an expiratory flow sensor of an anesthesia machine. Background technique [0002] An expiratory flow sensor in an anesthesia machine can be used to measure the flow of gas exhaled from a patient's lungs while the anesthesia machine is assisting the patient's breathing. [0003] Generally, the expiratory flow sensor can obtain the expiratory flow by sensing the pressure difference across the movable diaphragm. The long-term use of the movable diaphragm will cause its characteristics to shift. Therefore, if it is desired to prolong the life of the expiratory flow sensor, the expiratory flow sensor must be calibrated to eliminate the error between the reading of the exhalation flow sensor and the actual expiratory volume due to this offset. [0004] There have been various attempts to solve this problem. An existing method for calibrating ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/087A61M16/01
Inventor 张煜彦
Owner GE MEDICAL SYST GLOBAL TECH CO LLC
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