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|Title:||Unit dose capsules and dry powder inhaler|
|Abstract:||Described is a dry powder inhaler comprising an intake section; a mixing section, and a mouthpiece.|
|Inventor(s):||Steiner; Solomon S. (Mount Kisco, NY), Fog; Per B. (Bedford Hills, NY), Poole; Trent (South Amherst, MA), Feldstein; Robert (Yonkers, NY)|
|Assignee:||Mannkind Corporation (Valencia, CA)|
|Filing Date:||Mar 15, 2012|
|Claims:||1. A capsule for a dry powder inhaler comprising: a first keying surface on a top half of the capsule and a second keying surface on a bottom half of the capsule, wherein the top half and bottom half comprise an outer surface and one or more protrusions to lock and/or unlock the capsule; an air input hole, and a tangential airflow exit hole; said capsule having a substantially cylindrical interior shape when the top half and bottom half of the capsule are fitted together; wherein in an unlocked capsule a hole in the surface of the top half aligns with a hole in the bottom half to direct airflow into the capsule. |
2. The capsule according to claim 1 wherein the first keying surface and the second keying surface are the same.
3. The capsule according to claim 1 wherein the first keying surface and the second keying surface are different.
4. The capsule according to claim 1 wherein the second keying surface compliments a movable keying surface on an inhaler.
5. The capsule according to claim 4 wherein the movable keying surface is associated with a joint.
6. The capsule according to claim 1 wherein the air input has a ratio of long axis to short axis of between about 2:1 and about 3:1.
7. The capsule according to claim 6 wherein the ratio is about 3:1.
8. The capsule according to claim 1 wherein the tangential airflow exit leads directly into a mouthpiece of an inhaler.
9. The capsule according to claim 1 wherein the second keying surface is rectangular.
10. The capsule according to claim 1 wherein the first keying surface is triangular.
11. The capsule according to claim 1 further comprising a medicament.
12. The capsule according to claim 11 wherein the medicament is a gel, liquid or dry powder.
13. The capsule according to claim 12 wherein the medicament is a dry powder.
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