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:
May. 09, 2000
Filed:
May. 01, 1998
Malcolm Hill, Solana Beach, CA (US);
Peter R Byron, Richmond, VA (US);
Dura Pharmaceuticals, Inc., San Diego, CA (US);
Abstract
In a method for treating lung diseases, a drug formulation is prepared by combining micronized crystalline beclomethasone dipropionate and lactose. The drug formulation is placed into a dry powder inhaler which provides inhalable drug particles having a mass median diameter of about 0.5-5.8 microns. The inhaler is preferably largely flow rate independent. Drug and lactose particles are separated in the inhaler during inhalation, most desirably via a spinning element. Due to deep deposition, the drug particles persist in the lungs for a surprisingly long duration, increasing the therapeutic effect of each dose. The patient inhales the drug particles with an inspiratory flow rate of about 10-60 liters/minute, to produce a deep lung deposition of inhaled particles.