Injection device
US6086567A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Feb 26, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/502
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to an injection device for injecting a selectable dose of a liquid substance from an ampoule, located in an ampoule holder, comprising a piston and a sleeve-shaped mechanism holder, in the interior of which a longitudinally shiftable shaft is provided, the shaft being surrounded by an also longitudinally shiftable advancing sleeve coupled thereto. For selecting a dose of the liquid substance to be injected, a dosing sleeve with a stepped member is provided, the dose to be respectively administered being adjustable by a rotation of the dosing sleeve with the stepped member. The adjusted dose is readable via a dose imprint on the dosing sleeve. The actually possibly administrable dose can be read on a dose scale, fastened to the advancing sleeve, by means of the cooperation of a stop, fastened to the lower end area of the advancing sleeve, with a partition member, fastened to the shaft, the advancing sleeve being, as a result of this mechanism, then no longer movable if the supply of the ampoule is completely used up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.