Aerosol inhalation device

A tubular element, comprising:

• (1) an opening of suitable shape and dimensions capable of being securely snapped into place with an external mouthpiece of a convetional aerosol inhaler actuator,
• comprising
• (a) a housing adapted to receive an aerosol canister containing a pressurized medicament formulation, provided with a metering valve having a hollow valve stem;
• (b) a nozzle block defining a valve stem receptacle, an expansion chamber or sump, a nozzle channel, and an aperture to propel the aerosol formulation towards the mouthpiece opening;
• and
• (2) an opposite opening provided with a mouthpiece portion, having a central longitudinal axis located at an angle greater or equal to 90° to the direction of the longitudinal axis of the hollow valve stem, terminating in a mouthpiece opening through which a user inhales,
• wherein said opposite opening is a central rounded opening of a surface corresponding to the surface of a circular shaped opening of a diameter d from 5 to 14 mm and at a distance D from 16 to 58 mm from a nozzle channel external aperture and whose central axis is aligned with the central longitudinal axis of said actuator mouthpiece portion and substantially coinciding with the central longitudinal axis of said nozzle channel.

A tubular element, comprising

• (1) an opening of suitable shape and dimensions capable of being securely snapped into place with an external mouthpiece of a conventional aerosol inhaler actuator, comprising:
• (a) a housing adapted to receive an aerosol canister containing a pressurized medicament formulation, provided with a metering valve having a hollow valve stem;
• (b) a nozzle block defining a valve stem receptacle, an expansion chamber or sump, a nozzle channel, and an aperture to propel the aerosol formulation towards the mouthpiece opening;
• and
• (2) an opposite opening provided with a mouthpiece portion, having a central longitudinal axis located at an angle greater or equal to 90° to the direction of the longitudinal axis of the hollow valve stem, terminating in a mouthpiece opening through which a user inhales,
• wherein said opposite opening comprises a central circular opening
• (i) of an internal diameter d which is about 9, 10, 11, or 12 mm,
• (ii) at a distance D of about 38.5, 41.0, 45.0, 50.3, or 54.1 mm from a nozzle channel external aperture, whose central axis is aligned with the central longitudinal axis of said actuator mouthpiece portion and substantially coinciding with the central longitudinal axis of the nozzle channel, and
• (iii) wherein the profile of the central circular opening has an edge facing towards the inside of said mouthpiece, forming a cylindrical recess at an angle of 90° with respect to the plane of the wall defining the said central opening, of a length t of 4, 5, or 6 mm.