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. 02, 1999
Filed:
Apr. 09, 1996
Farid Vaghefi, Culver City, CA (US);
Vivorx Pharmaceuticals, Inc., Santa Monica, CA (US);
Abstract
A dry powder inhaler includes a housing, a dosing cartridge, and a spacer. Within the housing are a source of pressurized gas, a pressure gauge, a metered valve controlled by a trigger, a safety valve, and an electrostatic charger also controlled by the trigger. The dosing cartridge contains individual doses in airtight cells with one or more openings, each covered by an airtight coversheet. The system uses gas pressure or a penetration device to rupture one of the airtight cells, suspending the powder and directing it to a spacer for subsequent inhalation. The electrostatic charger discharges on the spacer, establishing an electrostatic charge thereon. The spacer includes a non-stick lining. The housing is designed so that it can retract into the spacer.