Coupling mechanism for a medication delivery device
US11154654B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2018 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | May 1, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2209/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A coupling mechanism for a medication delivery device includes a first part axially fixed relative to a housing and rotatable around a longitudinal axis of the first part, the first part having a gearing engagement to a second part arranged along the longitudinal axis, the gearing engagement having a first frictional resistance. The second part axially moveable along the longitudinal axis, and directly or indirectly in a friction fit engagement with the housing, which has a second frictional resistance. The first frictional resistance being below the second frictional resistance such that a rotation of the first part in a first direction axially longitudinally moves the second part away from the first part and a rotation in a second direction, opposite to the first rotation direction, reduces the axial distance between the first and second part and/or axially moves the second part into coupling abutment with the first part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.