Osmotic delivery system and method for enhancing start-up and performance of osmotic delivery systems
US6132420A · kind A · utility
119Cited by
23References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Nov 14, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2206/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to an osmotically driven agent delivery system for delivering a beneficial agent. The osmotic delivery system includes an osmotic agent which operates by imbibing fluid from an outside environment, causing the release of a beneficial agent. The osmotic delivery system includes a liquid or gel additive surrounding the osmotic agent for enhancing start-up and lubricating the osmotic agent. The liquid or gel additive is an incompressible lubricating fluid which fills any air gaps between the osmotic agent and the walls of a chamber and substantially reduces start-up delays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.