Delivery devices
First Claim
Patent Images
1. A delivery device comprising:
- a mouthpiece adapted for a subject to exhale through;
an air channel which is in fluid communication with the mouthpiece;
a flexible diaphragm which is disposed in the air channel, the diaphragm restricting air flow through the air channel until pressure in the mouthpiece equals or exceeds a predetermined actuation pressure; and
a rupturing element for rupturing the diaphragm when the pressure in the mouthpiece equals or exceeds the predetermined actuation pressure.
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Accused Products
Abstract
A breath-actuated delivery device includes a mouthpiece through which a subject in use exhales, an air channel which is in fluid communication with the mouthpiece, and a flexible diaphragm which is disposed in the air channel. The diaphragm provides for at least a restricted air flow through the air channel until a predeterminable actuation pressure is developed in the mouthpiece, and, on generation of the predeterminable actuation pressure in the mouthpiece, provides for an air flow through the air channel.
156 Citations
18 Claims
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1. A delivery device comprising:
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a mouthpiece adapted for a subject to exhale through; an air channel which is in fluid communication with the mouthpiece; a flexible diaphragm which is disposed in the air channel, the diaphragm restricting air flow through the air channel until pressure in the mouthpiece equals or exceeds a predetermined actuation pressure; and a rupturing element for rupturing the diaphragm when the pressure in the mouthpiece equals or exceeds the predetermined actuation pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A delivery device comprising:
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a mouthpiece adapted for a subject to exhale through; a channel which is in fluid communication with the mouthpiece; a delivery unit; a flexible diaphragm which is disposed in the channel, the diaphragm restricting gas flow through, the channel until pressure in the mouthpiece equals or exceeds a predetermined actuation pressure; and a rupturing element for rupturing the diaphragm when the pressure in the mouthpiece equals or exceeds the predetermined actuation pressure. - View Dependent Claims (10, 11, 12)
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13. A delivery device comprising:
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a nosepiece; a mouthpiece adapted for a subject to exhale through; a channel which is disposed downstream of the mouthpiece and upstream of the nosepiece; a delivery unit; a flexible diaphragm which is disposed in the channel, the diaphragm restricting gas flow through the channel until pressure in the mouthpiece equals or exceeds a predetermined actuation pressure; and a rupturing element for rupturing the diaphragm when the pressure in the mouthpiece equals or exceeds the predetermined actuation pressure. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification