| 摘要 |
A nasal breathing aid comprising the following components: a housing; facial engagement means attached thereto; at least two nostril pieces coupled to the housing. On the housing, there are at least two nasal inlets; at least one vent; and in the housing: a first passage and a second passage, each communicating an inlet with a vent, and fluid-isolated from each other, and restriction means configured to allow free flow of air through each passage from a vent to an inlet, and flow of air through the first passage independently restricted from flow of air through the second passage, from an inlet to a vent. |
