Disposable injection device designed to be pre-filled
US6432090B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2001 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Apr 2, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3103
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to an injection device comprising a syringe body (1, 13), which delimits a chamber which is designed to be filled with a liquid, and a unit (17) for distributing the liquid, comprising an end piece (17a) for closing off the chamber, which is extended by a locking male conical connection (17c), and can be displaced axially between a closing-off position of the said chamber and a position for injection of the liquid. According to the invention, the unit (17) for distributing comprises an intermediate connection (20), which is provided between the closing-off end piece (17a) and the male conical connection (17c). In addition, the syringe body (1, 13) comprises firstly a ring (3), which delimits two superimposed compartments with conjugated shapes, of the intermediate section (20) of the unit (17) for distributing, which are separated by a neck (9) which can permit axial displacement of the said intermediate section, and, secondly comprises a collar (12), which extends in the extension of the upper compartment (8), such as to accommodate the male conical connection (17c) of the said unit for closing off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.