Patent ID: 8322340

Claim:
An endonasal filtering device for air from the environment, consisting essentially of: two filtering components ( 1 , 2 ), joined to a flexible U-shaped connection ( 3 ) with two shanks ( 5 , 6 ) that extends across the piece of cartilage between the two nostrils, as a spring, wherein, said filtering components ( 1 , 2 ) are essentially flat components, lunette-shaped corresponding to the lumen of the channel giving access to the nasal cavities, and said U-shaped flexible connection ( 3 ) comprises, at each end of the shank, joining means ( 7 , 8 , 9 , 10 ) permanently fixed to the respective filtering component ( 1 , 2 ), wherein, a surface area of each filtering component ( 1 , 2 ) for intercepting incoming air is greater than the area of the section at entry to the endonasal channel, so as to be partially bent inwards along the edge and fit closely against the wall of the lumen of said channel, and the thickness of the flat filtering components ( 1 , 2 ) is less than the thickness of the flexible connection ( 3 ).