Method and system for detecting the level of anesthesia agent in an anesthesia vaporizer

摘要

A method of detecting a level of anesthesia agent in an anesthesia vaporizer is disclosed. The anesthesia agent forms a column of liquid within an external indicator; the method projects a beam of light into the external indicator. The method further receives the beam of light after the beam of light has traveled through the column of liquid, and detects when the level of anesthesia agent drops below a predetermined level.