Drug injection control device for temporarily maintaining twist of torsion spring to which rotational force is applied through dose dial
US12415035B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2021 |
| Grant date | Sep 16, 2025 |
| Priority date | — |
| Expiry date | Aug 17, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/8281
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A drug injection control device includes a housing, a dose dial, a cartridge holder fixedly coupled to an opposite side of the housing, an injection button positioned in the dose dial, an injection amount setting module, and a drug delivery module, wherein the injection amount setting module includes a reset tube switchably coupled to the dose dial by the operation of the injection button, a ratchet tube coupled to an outer side of the reset tube to rotate at the same time, a scale drum which slidably rotates along an axial direction on an outer surface of the ratchet tube, a torsion spring having two ends coupled to the housing and the ratchet tube, and an anchor rotatably coupled to the ratchet tube and slidably coupled to an inside of the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.