Patent ID: 8479735

Claim:
A nasal cavity filter ( 2 ) comprising a substantially cylindrical supporting wall ( 4 ), which adheres to the walls of a nasal cavity, and an inner surface ( 5 ) of which defines a cavity ( 6 ) for the passage of air inhaled and exhaled by the user; said filter ( 2 ) comprising a number of fins ( 7 ), which are housed inside said cavity ( 6 ), generating turbulence in the air flowing through, and the surface of which impacted by the air retains particles present in the air said filter ( 2 ) being characterised in that it comprises a layer of gel covering said inner surface ( 5 ) and said fins ( 7 ) wherein said supporting wall 4 has a truncated-cone-shape and said fins ( 7 ) comprise a first group of four fins ( 7 a ) joined in the form of a cross and said fins are located close to a large-diameter opening ( 6 a ) of said cavity ( 6 ) and a second group of four fins ( 7 b ) which are separated and converged with one another and are offset 45° with respect to said first group of fins ( 7 a ), and said second group of fins ( 7 b ) are located close to a small-diameter opening ( 6 b ) on said cavity ( 6 ).