Injection syringe with externally mobile needle shield
US6511460B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 2001 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Jul 10, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3247
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An injection syringe (10) has an elongated syringe body (12) including a tube (18), a perforated front wall (26) for receiving an injection needle (70), and a rear actuating plunger (14) movably mounted inside the tube (18). A mobile needle shield (16) is externally movable along the syringe body (12) between a retracted position and an active position. An axial coupling mechanism (54) is provided between the shield (16) and the actuating plunger (14) for their simultaneous displacement towards the front on a common section. A release mechanism (58) is provided for releasing the coupling mechanism (54) to disengage the actuating plunger (14) and the needle shield (16) when the needle shield (16) is finally set in place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.