Pen type drug injection device with friction reducing dose encoder mechanism
US9950122B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2014 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Apr 19, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/252
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A drug delivery device, comprises a housing having a longitudinal axis; an axially moveable component that is moveable along the longitudinal axis between a dose dialing position and a dose delivery position when a user operates the device to deliver a dose of drug; an encoder sleeve; an encoder pattern provided on the encoder sleeve, the encoder pattern comprising relatively conductive portions and relatively non-conductive portions that together comprise coded information; a contact-supporting component; and plural electrical contacts provided on the contact-supporting component. The plural electrical contacts contact the encoder pattern when the dose delivery button is in the dose dialing position and wherein the device is configured to move the contact-supporting component relative to the encoder sleeve as the axially moveable component moves from the dose dialing position to the dose delivery position such as to move the electrical contacts into positions where they do not contact the encoder pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.