Aerosol medication delivery apparatus and system
First Claim
1. An aerosol medication delivery apparatus for use with a pressurized metered-dose inhaler canister having medication and a propellant contained therein under pressure, wherein the pressurized metered-dose inhaler canister has a discharge orifice from which the medication and propellant can be discharged forming an aerosol, the apparatus comprising:
- a chamber housing having an input end and an output end and defining an interior space;
a containment baffle located at the output end, wherein the containment baffle includes a convex surface; and
a valve located at the output end comprising a valve seat formed on the containment baffle and a valve member, the valve seat having a sealing surface formed on an outer perimeter of the containment baffle, and the valve member having a central open area and a sealing portion at a perimeter of the central open area that mates with the sealing surface.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention provides an aerosol medication delivery apparatus for use with a pMDI canister having medication and a propellant contained therein under pressure, wherein the pMDI canister has a discharge orifice from which the medication and propellant can be discharged forming an aerosol. The apparatus has a chamber housing having an input end and an output end and defining an interior space, wherein the input end receives the medication discharged from the discharge orifice of the pMDI canister into the interior space and wherein the medication can be withdrawn from the interior space by inhalation by a patient from the output end. The aerosol medication delivery apparatus also includes a valve at the output end. The valve has a valve seat and a valve member. The valve seat has a sealing surface and the valve member has a central open area and a sealing portion at the perimeter of the open area that mates with the sealing surface when the valve is closed. The valve allows medication to be withdrawn through the central open area but prevents backflow into the chamber housing.
207 Citations
27 Claims
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1. An aerosol medication delivery apparatus for use with a pressurized metered-dose inhaler canister having medication and a propellant contained therein under pressure, wherein the pressurized metered-dose inhaler canister has a discharge orifice from which the medication and propellant can be discharged forming an aerosol, the apparatus comprising:
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a chamber housing having an input end and an output end and defining an interior space;
a containment baffle located at the output end, wherein the containment baffle includes a convex surface; and
a valve located at the output end comprising a valve seat formed on the containment baffle and a valve member, the valve seat having a sealing surface formed on an outer perimeter of the containment baffle, and the valve member having a central open area and a sealing portion at a perimeter of the central open area that mates with the sealing surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An aerosol medication delivery apparatus for use with a pressurized metered-dose inhaler canister having medication and a propellant contained therein under pressure, wherein the pressurized metered-dose inhaler canister has a discharge orifice from which the medication and propellant can be discharged forming an aerosol, the apparatus comprising:
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a chamber housing having an input end and an output end and defining an interior;
a containment baffle located at the output end, wherein the containment baffle is dome shaped and includes a concave surface and a convex surface, wherein the convex surface faces toward the input end of the chamber housing; and
a valve located at the output end comprising a valve seat and a valve member, the valve seat having a sealing surface, and the valve member having a central open area and a sealing portion at a perimeter of the central open area that mates with the sealing surface.
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Specification