Medicament delivery device
US8617124B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2010 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Aug 4, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3142
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to a medicament delivery device comprising an elongated housing arranged to contain a medicament container which medicament container contains a number of doses; a dose counter mechanism comprising a dose drum arranged with dose indicia on its outer surface and visible through a window on said housing; a rotatable driver connected to said dose drum; a plunger rod arranged to act on said medicament container for expelling a dose of medicament; an actuation mechanism connected to said rotatable driver and to said plunger rod when said medicament delivery device is actuated; wherein said dose drum is arranged with internal threads, in engagement with corresponding threads on said driver, wherein said threads have a certain pitch; wherein said dose drum is also arranged with external threads in engagement with corresponding threads arranged fixed in relation to said housing, wherein said threads have a certain pitch; and wherein the pitch of the threads between the dose drum and fixed in relation to the housing is lesser than the threads between the dose drum and the driver such that when said driver is rotated a certain angular distance, said dose drum is…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.