Pre-filled syringe
US6544233B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2000 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Oct 18, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/31598
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pre-filled syringe includes an outer cylinder having a sealed nozzle, and an inner cylinder movable forward and rearward in the outer cylinder and forming a first space between the inner cylinder and an inner front end of the outer cylinder. A first gasket is slidably accommodated in the inner cylinder in a liquid-tight state, a second gasket is accommodated slidably in the inner cylinder in a liquid-tight state and is located rearward from the first gasket to form a second space between the first and second gaskets, and a plunger is attached at a rear end of the second gasket. A third gasket is installed near the front end of the inner cylinder to be slidable in a liquid-tight state between the inner and outer cylinders. A first medicine is stored in the first space and a second medicine is stored in the second space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.