Force transmission arrangement for auto-injector
US9011387B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2011 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Mar 2, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/583
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a transmission arrangement for controlling a force of a translation, the transmission arrangement comprising a drive collar (13) connectable to a translative drive means (11) and prevented from rotating with respect to a ground (12) of the drive means (11), a flange face of the drive collar (13) bearing against a mating flange face of a friction collar (20), the friction collar (20) slidable in longitudinal direction and rotationally constrained by engagement in a cam track (12.3), another flange face of the friction collar (20) bearing against a mating flange face of a plunger (8), the plunger (8) slidable in longitudinal direction and prevented from rotating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.