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.
4 Assignments
0 Petitions
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.
-
Citations
18 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A delivery device comprising:
-
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)
-
-
13. A delivery device comprising:
-
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)
-
Specification