Dry powder inhaler
US7069929B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2002 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Jul 29, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2206/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dry powder inhaler includes an actuator pivotably mounted on a base. Movement of the actuator from a first position to a second position drives the a dobber to open a blister. A dispersion engine sub-assembly has a blister hood positioned over a blister opening position. A powder pathway connects from the blister hood into a powder dispersion engine. Upon inhalation, air flow draws powder up and out of an opened blister, into the blister hood and to the powder dispersion engine. Movement of the actuator causes the dobber to shear open a blister and also to press the blister hood down over the blister. This increases air flows up and around the open blister, carrying the pharmaceutical powder up and out of the blister and into the dispersion engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.