Injection device having a helical or spiral dosage scale
US9962495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2015 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Aug 20, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2207/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Driving and dispensing devices for an injection device are used for administering a liquid product and adjusting a product dose and include a dosage display element with a helical dosage scale; an indication device for indicating a dosage value from the dosage scale; and a dosage element, which can be held by a user and screwed relative to the indication device around a rotational axis (L) and relative to the dispensing member along the rotational axis (L) in order to adjust the dosage to be administered. A bearing element having a thread is in a threaded engagement with a thread of the dosage indication element, and the thread pitch of the thread of the dosage indication element is not the same as the pitch (P1) of the helical scale, and may be greater or smaller than the pitch (P1) of the helical scale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.