Medicament delivery device
US10589033B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2016 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Feb 14, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/3158
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medicament delivery device is presented having a body, an axially biased plunger rod provided with a first external thread, an activation member arranged to activate the plunger rod, a tubular medicament scale member receiving the activation member, which tubular medicament scale member is rotatable relative to the body and provided with a visual medicament dose scale, a stop nut that receives the plunger rod, where the stop nut is provided with an internal thread engaging with the first external thread of the plunger rod, and a gear train arrangement. The gear train arrangement couples the stop nut to the tubular medicament scale member for transferring rotational motion of the stop nut to the tubular medicament scale member to convey a measure of axial movement of the plunger rod to provide an indication, on the visual medicament dose scale, of an amount of expelled medicament.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.