| 摘要 |
A portable nasal diffuser comprising a respiratory assembly having a nasal mask to be worn over the nose, or two sleeves to be inserted into the nostrils of a user, the assembly being provided with two apertures constituting air inlet and outlet apertures respectively. First and second respective valves are mounted at the apertures, and the valves operate alternately during exhalation and inhalation by the user, such that when one aperture is open the other is closed. The outlet aperture communicates via the respective valve with the atmosphere. A reservoir is connected to the inlet aperture of the respiratory assembly by a flexible conduit and the reservoir has an air inlet and contains filter material for treating air admitted into the reservoir. Upon inhalation, the valve associated with the inlet aperture is opened and air is admitted to the reservoir and flows through the filter material to the respiratory assembly and to the user. The filter material is heated by a suitable energy source or by the body of the user. |
