Disposable injection device designed to be pre-filled
US6447480B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2001 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Apr 2, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3132
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to an injection device comprising a syringe body (1), which delimits a chamber which is designed to be filled with liquid, and a unit (25) for distributing the liquid, comprising an end piece for closing off the said chamber, which is extended by a base, which supports an injection needle which is protected by a protective cap (35), the said distribution unit being mobile axially between a closing-off position of the chamber, and a position for injection of the liquid. According to the invention, the unit (25) for distributing comprises an intermediate section (31) between the base and the closing-off end piece, and the syringe body (1) comprises a ring (6) which delimits two superimposed compartments (18, 19), which can each accommodate the said intermediate section. In addition, the protective cap (35) and this intermediate section (31) have complementary profiles (34, 38) in the form of a cam, which can permit generation of axial displacement of the unit (25) for distributing, towards its injection position, during rotation of the said protective cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.