Philip A. Jinks,Graham R. Purkins,Peter D. Hodson,Paul E. Hansen
申请号：
US12444864
公开号：
US09067031B2
申请日:
2007.10.19
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A metered dose valve for use in a pressurized metered dose dispenser for dispensing a metered dose of an aerosol formulation comprising particles of a medicament suspended in liquefied propellant, optionally in combination with one or more excipients, the valve comprising a metering chamber and at least one porous, fluid permeable, particulate semi-permeable body, the at least one porous body being positioned within a region of the interior conduit of the valve, for example within the metering chamber, or a pre-metering chamber and/or an internal channel upstream of the metering chamber.
