Compressed-air powder inhaler
US6029662A · kind A · utility
48Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Mar 16, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A powder inhaler contains powder and includes a mechanism for providing pressurized gas to discharge the powder through a mouthpiece. The gas must pass through an orifice before reaching the powder. The orifice is normally closed by an obturator which is released in response to the sensing of suction in the mouthpiece. The pressurized gas can bias the obturator to an orifice opening position prior to the detection of suction in the mouthpiece, so that when the obturator is released, the orifice is immediately and rapidly opened, and powder is rapidly emitted through the mouthpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.