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US 4,052,983 AGranted
Nasal filter
OwnerCoy R. Bovenderinventor
Life of this patent
Estimating the term…
Abstract
A replacable, sectionalized filter cartridge is received within a casing which is adapted to be inserted and removed from the nasal passage. The filter cartridge is preferably formed with two filter sections, one a nylon, cilia-like membrane, and one a polypropylene cilia-like membrane. If desired, in an alternate embodiment, a third honeycomb section separating the outer sections may be provided. The materials which form the outer filter sections are so chosen as to become electrostatically charged responsive to the movement of air thereby.
Claims7
A filter device for insertion into the nasal passage comprising:
- a. a hollow casing formed of a soft pliable material and having an outer transverse dimension shaped substantially to conform to the contour of the inner wall of the nasal passage and an inner transverse dimension;
- b. a removable and disposable filter cartridge means carried within said casing and comprising:
- i. a housing having outer transverse dimensions closely corresponding to the inner transverse dimensions of said casing for removable, yet stationary support within said casing;
- ii. at least one filter section formed of a porous membrane extending transversely across said housing;
- iii. a multiplicity of minute artificial fibers depending from said membrane, whereby said filter cartridge means simulates the natural cilia of the mucous membrane.
2 more elements
Dependencies are inferred from the claim text.