Details for Patent: 8,671,937
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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 |
Application Number: | 13/421,529 |
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. |