Methods and apparatus for producing nanoscale particles
US7625548B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2008 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Jul 31, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/8237
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Liquid nanoscale particle precursor materials for generating nanoscale particles include at least one high volatility carrier and a second component. A nanoscale particle generating device generates nanoscale particles by passing a liquid nanoscale particle precursor material through a flow passage heated to convert the carrier into a vapor and the second component into nanoscale particles. The nanoscale particles preferably consist essentially of the second component and can consist essentially of dry, solid particles. The particle generator can be incorporated in a hand held inhaler, and can be delivered to a targeted portion of the lung using the inhaler. Composite controlled release particles of micron or nanoscale size can be produced by flowing a solution of medicament, control release agent and carrier liquid through a capillary heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.