Drive assembly for a drug delivery and drug delivery device
US10543320B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 2014 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Sep 9, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/581
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A drive assembly for a drug delivery device is provided, including a piston rod which is moveable in a distal direction in order to deliver a dose of medication, and including a drive element which is configured to cause a movement of the piston rod. The drive assembly further includes a decelerating mechanism which is configured to decelerate the movement of the drive element such that the movement of the piston rod is decelerated during the dispense of a dose. The decelerating mechanism includes a decelerating element which is fixed with respect to a housing of the drug delivery device at least during the dispense of a dose and the drive element, wherein the drive element is configured to rotate with respect to the housing during the dispense of a dose, and wherein the decelerating element and the drive element rub against each other during the dispense of a dose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.