Needle protecting device comprising a lock
US7850648B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2007 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Sep 28, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3247
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A needle unit for an injection device comprising an injection needle and a needle holder, the needle unit coupled to the injection device and comprising: a needle protector comprising a guide which guides the needle protector such that it can move axially, at least one spring element applying a spring force to the needle protector thus holding the protector in a first position, and a lock which, after an injection, locks the needle protector in the first position against moving further axially, wherein the lock is deformable by force and assumes its original shape after said force is removed, and wherein the needle protector affects the lock transversely with respect to the axial movement direction during an axial movement of the protector which accompanies an injection and deflects the lock into a locking position when the needle protector is moved to the first position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.