Dry powder inhaler
US6983748B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2001 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Oct 26, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2206/14
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for delivering a powdered medicament by inhalation comprises an air inlet passage having low pressure-drop and low turbulence for stabilizing air flow before aerosolization, a dosing cup in the region of reduced air velocity to delay aerosolization, a high pressure drop throat to generate a high velocity flow, a rapidly expanding diverging passage to create a free jet of air with high turbulence and an outlet passage having large cross-sectional area to control the rate of dissipation of the free jet. The device is simple yet capable of consistently providing uniform and effective powder aerosolization and deagglomeration over a variety of patient inhalation profiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.