DRY POWDER INHALER Russian patent published in 2008 - IPC A61M15/00 

FIELD: medical equipment.

SUBSTANCE: dry powder inhaler contains a nozzle, a substrate, a dose of the medicinal powder providing for disaggregating and dispersion of units of particles of a dose of a medicinal powder in air. Under the influence of air absorption force through a nozzle, particles of therapeutic powder dose, accessible to a nozzle, are gradually disaggregated and also dissipated in a stream of air coming in to a nozzle. Gradual disaggregation and dispersion is produced by effect of cutting a powder by air stream due to the relative movement induced between a nozzle and a powder dose. The nozzle is usually settled down outside a space filled with powder, without access to powder until the air stream in the nozzle framed by means of absorption passes threshold rate of a current. Simultaneously with absorption, relative movement begins so that the nozzle gradually crosses a powder dose. The cutting off effort and inertia of an air stream are so powerful that units of particles of a powder dose, which are close to an inlet opening of a moving nozzle, are liberated, disaggregated to a very high degree and dissipated, being carried away by the air stream created passing, through the nozzle, to a user.

EFFECT: invention does not require energy sources other than energy of effort of inspiration to realise a very high degree of disaggregation and effective dispersion in air of a therapeutic dose of a dry powder.

7 cl, 3 tbl, 18 dwg