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US 6,637,432 B2Granted
Inhalation actuated device
AssigneeIEP Pharmaceutical Devices Inc.
InventorsKeith Wakefield, Perry A. Genova
Life of this patent
Estimating the term…
Abstract
A device for dispensing medication in an aerosol form from an MDI which is activated by a source of compressed air which is pressurized by a compression piston in associate with a cocking lever which also acts as a mouthpiece cover wherein the device automatically discharges the medication upon inhalation on the mouthpiece. The device also has a detachable component for alternative use as a press and breathe type inhaler.
Claims18
A drug dispensing device actuated when a patient inhales from the device, comprised of
- (a) a first chamber for retaining a medication containing canister, the first chamber being in fluid communication with a mouthpiece through which a patient inhales a dose of a medication dispensed as an aerosol, an actuable means for acting on the canister causing dispensing of medication therefrom, said actuable means being in fluid communication with an openable and closeable first fluid pathway;
- (b) a second chamber including a compression piston hi to provide compression therein, the second chamber further including outlet means for providing fluid communication with the first fluid pathway;
- (c) a mouthpiece cover for protecting said mouthpiece wherein said mouthpiece cover is capable of rotating away from said mouthpiece;
- (d) a movable arm rotationally coupled at a first end to said mouthpiece cover and at a second end attached to the compression piston such that the compression piston is movable within said second chamber in response to movement of the movable arm in at least one direction causing compression of fluid therein;
- (e) sealing means for sealing the first said fluid pathway in a closed position;
- and
- (f) means for maintaining the sealing means in a closed position and for opening the sealing means when the differential pressure caused by the inhalation of the user exceeds a threshold value which causes said compressed fluid to act on said actuable means to displace said canister dispensing a close of medication to the user.
4 more elements
A drug dispensing device actuated when a patient inhales from the device, comprising:
- (a) a detachable dispenser, said dispenser including a mouthpiece through which a patient inhales a metered dose of medication dispensed as an aerosol;
- (b) a medication containing canister operatively connected to said detachable dispenser;
- (c) a first chamber for retaining said medication containing canister and said detachable dispenser, the first chamber being an actuator means for acting on the canister to dispense the medication therein,
- (d) a second chamber including a compression piston to provide compression therein, the second chamber further including means for allowing fluid communication with an operable and closeable first fluid pathway;
- (e) a movable arm attached at a first end to the compression piston such that the compression piston is movable within said second chamber in response to movement of the movable arm in at least one direction causing compression of fluid therein;
- (f) means for sealing the first fluid pathway in a closed position;
- and
- (g) means for maintaining the sealing means in a closed position and for opening the scaling means when the differential pressure thereacross exceeds a threshold value at which time compressed fluid passes through said fluid pathway to said first chamber causing said actuator means to displace said canister dispensing a dose of medication to the user.
5 more elements
Dependencies are inferred from the claim text.