Inhaler valve mechanism
US7597098B2 · kind B2 · utility
1Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2003 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Sep 6, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F11/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A valve mechanism is provided for use in an inhaler comprising a pressurized container, and a metering chamber, and a valve mechanism wherein the inlet and outlet valves are separate and can be operated independently. The pressure of the fluid in the canister is used to aid the opening of the outer valve so reducing the force to fire a dose. A variant of the valve mechanism allows the user to select from a range of dose volumes by appropriate orientation of the stem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.