A system for remotely monitoring the oxygen gas administration status (reservoir expansion width) of oxygen masks with reservoirs

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  • リザーバ付き酸素マスクの酸素ガス投与状況（リザーバ膨張幅）を遠隔モニタリングするシステムの研究開発

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Abstract

<p>During patient exhalation through an oxygen mask with a reservoir, oxygen gas is stored in the reservoir bag (hereinafter referred to as the reservoir), and during patient inhalation, oxygen gas is discharged from the reservoir. This increases the oxygen concentration of the inhaled air to 60 %–80 %. In an abnormal condition where the reservoir collapses during inhalation, the oxygen concentration of the inhaled air decreases. To avoid such an abnormal condition, the oxygen gas flow should be adjusted so that the reservoir is always inflated to 30 %–50 % or more of the full volume. In clinical practice, the collapsed and inflated state of the reservoir is monitored visually by medical personnel. Under such circumstances, there is a risk of not being able to administer the appropriate concentration of oxygen to patients due to human error. Therefore, in this study, we made a system that quantitatively and objectively monitors the collapsed and the distended state of the reservoir using a reed switch and notifies the surrounding area of abnormal conditions by emitting LED lights and triggering an alarm.</p>

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