Assembly for a medication delivery device and medication delivery device comprising such an assembly
US11534555B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2018 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Oct 1, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/5033
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An assembly for a medication delivery device having a body, a piston rod and a setting nut. The piston rod is rotatable relative to the body in a dose setting state and is axially movable in a distal direction with respect to the body in a dose delivering state. The setting nut is secured against rotational movement with respect to the body, but is axially movable relative to the body, being helically coupled with the piston rod to axially travel in the proximal direction for setting a dose of a medication due to a helical movement of the setting nut with respect to the piston rod when the piston rod is rotated in the dose setting state, and is able to axially travel in the distal direction for delivering the set dose of the medication when the piston rod is axially moved in the dose delivering state of the assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.