Injection device
US9855391B2 · kind B2 · utility
0Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2013 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Apr 18, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3126
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention concerns an injection device for apportioning set doses of a drug from a reservoir to a subject. The injection device comprises a housing having an interior thread formed as an outwardly pointing thread carried on an upstanding tower centrally located in the injection device. The outwardly pointing thread forms a first thread connection with an interior thread of a rotatable scale drum. The injection device further comprises a driver for moving a piston rod forward when moved axially. The driver operates the piston rod through a second thread connection having a pitch different than the first thread connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.