Drug delivery device with unidirectional coupling
US10842945B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2014 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Nov 17, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3126
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A drug delivery device is provided having a housing, a lead screw that is rotatably fixed with respect to the housing during dose setting and during dose delivery and that is axially moveable in a delivery direction relative to the housing for dose delivery, a number sleeve threadedly engaged with the housing to be screwable relative to the housing, and a dial link which is axially moveable and rotatable with respect to the housing for dose setting and which is prevented from rotation with respect to the housing for dose delivery. The dial link is rotatably fixed with the number sleeve when the dial link and the number sleeve are in a first arrangement, and the number sleeve and the dial link are rotatable with respect to one another when the dial link and the number sleeve are in a second arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.