Drug delivery device
US6641561B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2001 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jul 3, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/287
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed to a drug delivery device. The device includes an interior chamber and a seal structure. In accordance with the present invention, the interior chamber may include a first, liquid medicament compartment and a second medicament compartment. The seal structure is conditionable to permit fluid to pass therethrough upon pressurization of the fluid. The seal structure preferably includes a sealing member which moves from a first sealed position into a second by-pass position upon pressurization of the liquid injection solution in the wet compartment of the housing assembly. Such by-pass movement of the sealing member enables the liquid injection solution to flow through the seal structure into the second ingredient compartment and mix for injection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.