| 摘要 |
The present invention refers to a nasal filter, characterized by the fact of being formed by a body having two hollow projections which can be located in the nasal fossae and which are provided with respective frusto-conical chambers the major bases of which are closed and provided with a plurality of holes, the minor bases being open; said chambers having two corresponding spheroidal hollow members the laminiform facings of which are perforated and their diameters being somewhat larger than the inside diameters of the minor bases and considerably smaller than the diameters of the major bases of said projections, said spheroid members being filled with filtering substances and said projections being provided with retaining temples to be applied to the outer part of the nasal fossae.
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