Dry powder delivery system
US5441060A · kind A · utility
96Cited by
28References
27Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 8, 1993 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Feb 8, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/5196
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dry powder delivery system having an elongaged tube containing a matrix having a measured amount of dry particles of therapeutic compound and a porous element having a dessicant therein is disclosed. The porous element with the dessicant can be combined with the powder-containing matrix or the they can be two separate elements. The pressure drop induced by inhalation by the user causes air to flow through the tube and into contact with the particles of dry powder for discharging the particles for inhalation by the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.