Dry powder delivery system
US5687746A · kind A · utility
350Cited by
13References
24Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/5196
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dry powder delivery system having an elongated tube containing a matrix having a measured mount of dry particles of therapeutic compound and a porous element having a desiccant therein is disclosed. The porous element with the desiccant can be combined with the powder-containing matrix or it can be two separate elements. The pressure drop induced by inhalation of 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.