Medical injector with post-autoreconstitution dose setting and autoplunger drive
US8500682B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2009 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Sep 18, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/3156
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical injector is provided herein having a body; a reservoir containing first and second mixable component; a stopper; a plunger; a spring disposed to advance the plunger; a first releasable retainer for releasably retaining the plunger in a first state against force of the spring; a first trigger for causing the first releasable retainer to release the plunger; a second releasable retainer for releasably retaining the plunger in a second state against force of the spring; and, a second trigger for causing the second releasable retainer to release the plunger. The spring causes the plunger to advance so that the stopper traverses at least a predetermined extent of advancement thereby causing mixing of the first and second mixable components. Advantageously, with the subject invention, a medical injector is provided which allows for autoreconstitution with subsequent dose setting and autoplunger activation being activated by separate triggers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.