Dry powder inhalation device
US9446209B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 7, 2012 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Apr 2, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2209/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Taught herein is a disposable breath actuated dry powder drug inhalation device having a powderized drug storage chamber with integral toroidal geometry and air flow pathways for entraining and breaking up powder aggregates prior to delivery to the patient. The toroidal chamber is fluidly connected by one or more air inlets directed in a non-tangent manner toward the powder to loft and set up an irregular-rotational flow pattern. Also, in fluid connection with the toroidal chamber is a centrally or near centrally located air and powder outlet consisting of one or more holes forming a grid in fluid connection with a channel providing a passageway for powder flow to the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.