Osmotic pump with means for dissipating internal pressure
US7207982B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2004 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Oct 19, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/14513
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention includes an osmotic pump that includes a means for venting an osmotic composition included in the pump before the internal pressure of the pump has the opportunity to build to such an extent that the pump is structurally compromised, such as when one or more components of the pump are physically separated. The means for venting osmotic material included in an osmotic pump according to the present invention includes a vent that allows the material included in the osmotic composition of the pump to dissipate into an environment of operation at a rate that results in dissipation of the pressure created within the osmotic pump and a reduced potential for subject discomfort or irritation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.