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.
申请公布号
DE60331840(D1)
申请公布日期
2010.05.06
申请号
DE2003631840
申请日期
2003.07.18
申请人
THE TECHNOLOGY PARTNERSHIP PUBLIC LTD. CO.
发明人
GUTSELL, GRAHAM SCOTT;BOWMAN, NICHOLAS JOHN;MCDERMENT, IAIN GRIERSON;CAMPBELL, PATRICK JAMES