Auto-pen for a two-chamber ampoule
US7815598B2 · kind B2 · utility
5Cited by
15References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2005 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | May 10, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/2448
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An injection device for use with a two-chamber ampoule, wherein the device includes a front casing part with which the two-chamber ampoule can be associated, a rear casing part, a threaded drive accommodated by the rear casing part, a piston rod which, during a blending movement, is moved by the threaded drive toward a dispensing end of the device and slaves at least a closing piston of the two-chamber ampoule in the process, wherein a spring element presses the piston rod toward the dispensing end during a delivery movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.