Injection device
US7597685B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 2005 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Nov 24, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/2013
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Injection device comprising a tubular elongated main body, a needle shield slidably arranged in said main body, a needle shield link slidably connected to said needle shield, a enclosure containing medicament arranged in said main body, a needle connected to said enclosure, a plunger operatively arranged to said enclosure for ejecting said medicament through said needle and arranged on its upper part with a number of outwardly extending stop members, spring means arranged to said plunger for operating said plunger, a dose activating means, a needle shield spring surrounding the needle shield link. The invention is characterised in that said injection device further comprises a first tubular member rotationally and slidably arranged inside said needle shield link, said tubular member comprises a number or ridges and protrusions on both its outer and inner surfaces, said ridges and protrusions on the outer surface of the tubular member co-operate with guide members arranged on the inner surface of said needle shield link, said ridges and protrusions on the inner surface of the tubular member co-operate with the outwardly extending stop members of the plunger that said injection devic…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.