| 摘要 |
PURPOSE: To enable the confirmation of breathing and medicine inhalation condition by providing a one-way exhalation valve that is normally closed, and is opened at the time of breathing to discharge the breath inside a mask to the outside so as to be adjacent to the front end of the tunnel-shaped extension for covering the nose that is projectedly provided to the mask side wall ranging from the rear end of the mask to terminate before the front end thereof. CONSTITUTION: This mask consisting of silicone rubber or the like is formed both by a first truncated cone part 26 that is integrated with a ring 22 and has a gradual diametral decreasing rate and by a second truncated cone part 28 that has a strong diametral decreasing rate; and the outer end part 30 of the second truncated cone part 28 is opened to cover the mouth and noise. A nose piece 32 is projectedly provided to the second truncated cone part 28 in a tunnel shape and ranging from the end part 30 to the first truncated cone part 26. A housing 44 is formed at the front end of the nose piece 32, and therein a one-way exhalation valve element 34 is formed, which has a valve closing member 60 that opens when there is a breath, and closes when there is no breath. |
