| 摘要 |
PROBLEM TO BE SOLVED: To provide a nasal mask preventing the falling of droplets formed by dew-condensation of wet components contained in respiration gas on a mask inner face onto the face of a patient in the nasal mask supplying the respiration gas to the patient. SOLUTION: This nasal mask is formed by either one of the following means for solving the problem. (1) The nasal mask itself has a heat insulating property or is constituted by inserting a heat insulating layer therebetween. (2) The nasal mask is provided with a droplet guide groove to prevent the growth of small droplets by merging and is constituted to trap the droplets moving downward. (3) A droplet movement prevention means is provided inside the nasal mask to prevent the growth of the droplets. (4) The inside of the nasal mask is formed to have hydrophilicity to prevent the formation of droplet. (5) The inside of the nasal mask is formed to have water-shedding quality to move the droplets downward while they are small. COPYRIGHT: (C)2008,JPO&INPIT
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