Patent ID: 7571722

Claim:
Nebulizer for a fluid comprising: a mouthpiece, a fluid supply path through which the fluid is supplied to the mouthpiece and at least one air supply opening through which air flows into the mouthpiece, the fluid being sprayed into the mouthpiece separately from and independently of the air flow into the mouthpiece, wherein the at least one air supply opening is associated with at least one valve device by means of which a backflow of air from the mouthpiece back out of the nebulizer is blockable, wherein the valve device ensures that, in the event of a user breathing out into the mouthpiece, an overpressure is produced which indicates a malfunction to the user, wherein inhalation can be continued, as the nebulized fluid or aerosol present in the mouthpiece can continue to be breathed in, and wherein the valve is arranged at least one of in a mouthpiece and laterally alongside an expulsion nozzle for the fluid.