Dial-down mechanism for wind-up pen
US7686786B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2005 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Aug 3, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/202
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to a dial-down mechanism for an injection device comprising a torsion spring for assisting injection of a dose of medicament from the injection device, the dial-down mechanism comprising dial-up cam arranged to receive and engage with a dial-up key, wherein the dial-up cam and the dial-up key are adapted to, upon rotation of a dose setting member in a first direction, cooperate to strain the torsion spring of the injection device, and a dial-down cam arranged to receive and engage with a dial-down key, wherein the dial-down cam and the dial-down key are adapted to, upon rotation of the dose setting member in a second direction, cooperate to release the torsion spring of the injection device, the second rotation direction being opposite to the first rotation direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.