| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nasal cavity applied piece, facilitating replacement of a filter member, lowering the choking degree when applied, and effectively restraining inhalation of minute particles and hazardous substances. Ž<P>SOLUTION: This nasal cavity applied piece 1 includes: a pair of casings 2 cylindrical and hollow to be inserted in the nasal cavity; a first filter member 4 removably disposed in the casings 2; a second filter member 5 removably disposed together with the first filter member 4 in the casings 2 and more coarse than the first filter member 4; a first lid 2a provided at one end in the longitudinal direction of the casing 2 and having a first vent hole 2c; a second lid 2b provided at the other end in the longitudinal direction of the casing 2 and having a second vent hole 2d having a larger open area than the first vent hole 2c; and a connecting part 3 connecting the other ends of the pair of the casings 2 to each other and engaged with the nasal septum of a wearer. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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