Drug delivery apparatus including beneficial agent chamber with chimney for a directed flow path
US4936829A · kind A · utility
50Cited by
13References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Oct 19, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/1409
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cartridge for introducing a beneficial agent into a medical fluid conduit is disclosed. The cartridge includes a pierceable stopper having a hollow, open ended protrusion extending into the cartridge chamber and having the beneficial agent retained therein by a liquid pervious barrier. The hollow, open ended protrusion creates a directed flow path within the cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.