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    • 2. 发明授权
    • Low noise exhalation port for a respiratory mask
    • 用于呼吸面罩的低噪声呼气口
    • US06668830B1
    • 2003-12-30
    • US09443504
    • 1999-11-19
    • Gary L. HansenChristine Gale KronichClifford Thomas Jue
    • Gary L. HansenChristine Gale KronichClifford Thomas Jue
    • A62B1802
    • A62B18/10A61M16/06A61M2205/42
    • A low noise exhalation port for a respiratory mask has a body including a proximal end operably connected to an internal area of the mask to vent carbon dioxide exhaled by a person from the mask, and a distal end. The venting device vents a gas out of the respiratory mask so as to substantially reduce inhalation by the person of the exhaled carbon dioxide. An exit passage portion is provided at the distal end and extends partially through the body and communicates with an exterior of the mask, the exit passage portion having a substantially regular cross-sectional area. An entrance passage portion is provided at the proximal end and extends partially through the body, the entrance passage portion communicating with an interior of the mask and further communicating with the exit passage portion, the entrance passage portion decreasing in cross-sectional area from the interior of the mask to the exit passage portion.
    • 用于呼吸面罩的低噪声呼气端口具有主体,该主体包括可操作地连接到面罩的内部区域的近端,以排出人从面罩呼出的二氧化碳和远端。 通气装置将气体从呼吸面罩排出,以便基本上减少人呼出的二氧化碳的吸入。 出口通道部分设置在远端并且部分地延伸穿过主体并与面罩的外部连通,出口通道部分具有​​基本上规则的横截面积。 入口通道部分在近端设置并且部分地延伸通过主体,入口通道部分与面罩的内部连通并与出口通道部分进一步连通,入口通道部分从内部的横截面积减小 的面罩到出口通道部分。