| 摘要 |
A nasal filtration device adapted to remove minute particles from the air entering the nostrils, the device comprising a nasal insert adapted for insertion into a nostril of the user, the insert comprising a housing defining a passageway therethrough, a filter element disposed within the housing and extending across the passageway. The filter element comprise s a filter membrane secured at its periphery to the interior surface of the housing, so as to provide a fluid-tight seal between the filter membrane and the inner surface of the housing. The filter diaphragm may be made of polypropylene fibres and the housing may be formed of rubber- modified polypropylene, ensuring enhanced bonding capability between the two components. A pair of inserts may be integrally formed with a connective member.</S DOAB>
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