The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2011
Filed:
May. 20, 2003
Stephen Cross, Alamo, CA (US);
Craig C. Hodges, Walnut Creek, CA (US);
Ron L. Hale, Woodside, CA (US);
Peter M. Lloyd, Walnut Creek, CA (US);
Daniel J. Myers, Mountain View, CA (US);
Reynaldo J. Quintana, Redwood City, CA (US);
Joshua D. Rabinowitz, Mountain View, CA (US);
Curtis Tom, San Mateo, CA (US);
Martin J. Wensley, San Francisco, CA (US);
Stephen Cross, Alamo, CA (US);
Craig C. Hodges, Walnut Creek, CA (US);
Ron L. Hale, Woodside, CA (US);
Peter M. Lloyd, Walnut Creek, CA (US);
Daniel J. Myers, Mountain View, CA (US);
Reynaldo J. Quintana, Redwood City, CA (US);
Joshua D. Rabinowitz, Mountain View, CA (US);
Curtis Tom, San Mateo, CA (US);
Martin J. Wensley, San Francisco, CA (US);
Alexza Pharmaceuticals, Inc., Mountain View, CA (US);
Abstract
A device for delivering a drug by inhalation is disclosed. The device includes a body defining an interior flow-through chamber having upstream and downstream chamber openings, and a drug supply unit contained within the chamber for producing, upon actuation, a heated drug vapor in a condensation region of the chamber. Gas drawn through the chamber region at a selected gas-flow rate is effective to form drug condensation particles from the drug vapor having a selected MMAD between 0.02 and 0.1 MMAD or between 1 and 3.5 μm. A gas-flow control valve disposed upstream of the unit functions to limit gas-flow rate through the condensation region to the selected gas-flow rate. An actuation switch in the device activates the drug-supply unit, such that the drug-supply unit can be controlled to produce vapor when the gas-flow rate through the chamber is at the selected flow rate.