Metering valve for a metered dose inhaler providing consistent delivery
US7234460B2 · kind B2 · utility
85Cited by
26References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2003 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Nov 30, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M15/009
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to a novel design for a metering valve that provides improved consistency of formulation delivery. Generally, the metering valve includes (a) a valve stem that generally defines a longitudinal axis and includes a body portion having a metering surface, wherein the longitudinal axis and a plane tangential to at least a portion of the metering surface define an angle from about 2° to about 90°; and (b) a valve body having an internal chamber defined at least in part by the body wall and includes a metering portion configured to substantially conform to the metering surface of the valve stem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.