Injection device
US6663602B2 · kind B2 · utility
292Cited by
16References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 14, 2001 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Jun 17, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/581
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An injection device for injection of set does of medicine from a cartridge has a nut that is screwed up along a threaded piston rod during a dose setting operation. The nut is screwed along the piston rod by rotating a dose setting drum. An injection button is coupled to the piston rod with a gear wheel transmission. Axial movement of the injection button causes a corresponding axial movement of the piston rod until the nut engages an abutment in the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.