Drive mechanism
US10758677B2 · kind B2 · utility
0Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2016 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Aug 20, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2207/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to a drive mechanism for a medicament delivery device, comprising a plunger rod (54) arranged to act on a stopper (28) arranged in a medicament container (16); a compression drive spring (58) operably connected to said plunger rod (54) and capable of applying a force on said plunger rod (54); a spring guide (78) arranged coaxial with, and radially outside, said compression drive spring (58), capable of preventing buckling of said drive spring, wherein said spring guide (78) comprises a resilient force element (86) capable of applying a force on said medicament container (16).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.