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Aerosol inhalation device providing improved aerosol delivery

Aerosol inhalation device providing improved aerosol delivery

Official Gazette of the United States Patent and Trademark Office Patents 1246(3)

Improved aerosol inhalation devices are provided. The devices include an aerosol source for generating an aerosol; a first conduit, having a proximal end, the first conduit providing passage of the aerosol to the patient; a first chamber at the proximal end of the first conduit, adjacent to the aerosol source; a second conduit providing passage of gaseous medium from the patient; a second chamber; and a first valve disposed between the first chamber and the second chamber. The first valve remains closed during exhalation by the patient and opens at least partially during inhalation. The device also includes a second valve disposed between the second conduit and the second chamber, which remains closed during inhalation by the patient and opens at least partially during exhalation by said patient. The gaseous medium exhaled by the patient can optionally contain material of which the aerosol is formed, such as liquid droplets. The invention also provides methods for making the devices, and for using the devices to deliver therapeutic and diagnostic material in aerosol form to a patient.

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Accession: 034365096

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