| 摘要 |
<p>The present invention concerns a nasal cavity filter (1) comprising a substantially cylindrical support wall (2), an outer surface (3) of said support wall (2) being suitable to adhere to the nasal cavity walls, and an inner surface (4) of said support wall (2) being suitable to define a cavity for passage of air from inside to outside, and vice versa; and a layer comprised of a gelatinous substance suitable to cover said inner surface (4); said filter (1) being characterized in that said inner surface (4) of said wall (2) comprises at least an element (5), said element (5) preferably having a helicoidal shape, suitable to generate turbulences through air flow passing through said cavity.</p> |
