Drug injection device
US11918790B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2022 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Dec 21, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/31583
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A drug injection device includes a last dose setting having a main drive pin, a drive wheel, a driven wheel, an abutment element fixedly coupled to, or integrally formed with, the driven wheel. The drive wheel has a rotation axis parallel to a longitudinal axis and is configured to be driven about the longitudinal axis by a knob and to be periodically driven in rotation about the rotation axis by the main drive pin, during a drug dose setting. The driven wheel has a second rotation axis parallel or coaxial to said longitudinal axis and is configured to be periodically driven about the longitudinal axis by the drive wheel. The abutment element is configured to prevent the rotation of the drive wheel about the longitudinal axis when the knob has made a predetermined number of full and/or partial rotations about the longitudinal axis correlated to the predetermined drug volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.