DISPOSITIVO DI PROTEZIONE DELLE VIE RESPIRATORIE

Protection device of the respiratory tract of a person including a mask body of any convenient rigid or semi-rigid material suitable to cover the mouth and nose of a person, at least one pair of housings, placed on the sides of the mask body designed to hold a sleeve inside each of them, a spring inserted inside each sleeve, whose first end is fixed to the lower edge of the sleeve while the second end has a fixing arrangement which allow the two springs to join together behind the head of the person wearing the device, wherein each spring is substantially coated for a first portion, the one fixed in the sleeve, by a cylinder of non-breathable fabric material and for a second portion, by a cylinder of breathable fabric material or other suitable material capable of filtering the air.