Medicament injection device with rotary encoder
US11642468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2018 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Sep 4, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/8212
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present disclosure relates to medicament injection devices. An injection device includes: a movable dosage programming component comprising a rotary encoder system having a predefined angular periodicity, a sensor arrangement including a first optical sensor configured to detect movement of the movable dosage programming component relative to the sensor arrangement during dosing of a medicament, wherein the first optical sensor is configured to operate in a strobe-sampling mode at a first frequency, a second optical sensor configured to detect movement of the rotary encoder system relative to the second optical sensor wherein the second optical sensor is configured to operate in a strobe-sampling mode at a second frequency lower than the first frequency, and a processor arrangement configured to, based on the detected movement, determine a medicament dosage administered by the injection device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.