Patent ID: 8715770
Filing Date: 2014-05-06
Classification: A61M,B05B

Abstract:
1. A method of coating dry powder microparticles onto a surface, the method comprising: feeding dry powder particles comprising a medicament that is to be subsequently delivered to the lungs of a patient into a jet mill; milling said dry powder particles into microparticles having a desired aerodynamic diameter; deaggregating the microparticles in the jet mill; and directing said deaggregated microparticles from the jet mill through a nozzle toward a surface of a carrier to be coated, wherein the nozzle has a size and shape to control an exit velocity of the deaggregated micronized dry powder particles from the nozzle such that they contact the surface with a force that permits the powder to remain on the surface in a secure manner while still being readily removable from the surface when the surface is used in an inhaler where the dry powder particles are removed from the surface for delivery in their deaggregated state to the patient's airway.