Injection device for injection of liquid
US6413242B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1998 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | May 21, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/2407
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Injection device (1) for injecting fluid from a fluid container (4) equipped with a piston (5), comprising an actuating device (7) having a rod-shaped driven member (9) having a structured surface, a control button (8) being movable in axial direction, and a hollow cylindrical counter component (11) having a structured internal sleeve and said counter component matching the rod-shaped driven member (9). When twisting the counter component (11) in relation to the driven member (9), the driven member (9) can be shifted freely in axial direction. This allows the free return of the driving member—without the need for additional control elements—only when the patient releases the driven member (9) by turning it, i.e. by a conscious additional operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.