Safety device for a liquid injection syringe, and a syringe assembly including the device
US9675765B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2008 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Oct 2, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3264
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The syringe comprises a body containing the liquid and having fitted thereto an endpiece for fastening a needle carrier. The safety device comprises a protective sheath and a syringe support that is received inside the sheath. The sheath and the support are axially movable relative to each other between two positions, namely an uncovered position of the needle, and a retracted position of said needle. The support includes anti-rotation means for constraining it in rotation about its axis and comprising at least one pawl urged resiliently into a position in which the pawl is designed to co-operate with complementary anti-rotation means of the fastener endpiece. The sheath and the support include complementary anti-rotation means for constraining them in rotation relative to each other about their axes and activated at least when the sheath and the support are in their uncovered position of the needle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.