Breath introduction guide , respiratory concentration measurement sensor and respiratory airflow measurement sensor ,

摘要

PROBLEM TO BE SOLVED: To provide an expiratory air introduction guide capable of exposing nares while the guide is used by moving a nasal expiratory air introduction part to a retraction position to wipe the nares of a subject, etc.SOLUTION: This invention provides expiratory air introduction guides 50, 60 and 70 to be used in a respiratory air concentration measuring sensor 1 for measuring the concentration of a specific component in respiratory air or a respiratory air flow sensor. The expiratory air introduction guides 50, 60 and 70 include: a respiratory air passage 70 through which respiratory air of the subject 500 passes to a measuring position; and the nasal expiratory air introduction part 50 provided in the periphery of the nares of the subject 500 for introducing the expiratory air from the nose of the subject 500 into the respiratory air passage 70. The respiratory air passage 70 and the nasal expiratory air introduction part 50 are connected to each other, and the nasal expiratory air introduction part 50 is movable between a wearing position to cover the periphery of the nares of the subject 500 and the retraction position to expose the nares.