Injection device with a time-constant delivery signal
US7758550B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2008 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Mar 21, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/582
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An injection device for administering a liquid product, the device including a drive mechanism, an engaging member and a catch including a number of latching elements, wherein at least one of the engaging member and the number of latching elements is relatively moveable to the other to generate a haptic and/or acoustic signal comprising a number of discrete signals during a relative movement, wherein one of the catch and the engaging member is coupled to the drive mechanism and the drive mechanism generates a variable drive speed during the relative movement, and wherein the latching elements are a distance (x0; x0-Δx) from each other such that a time interval between each of the number of discrete signals is constant. A method for generating a haptic and/or acoustic signal in use of an injection device is encompassed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.