Injection needle having shield activated valve
US10034984B2 · kind B2 · utility
0Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2014 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Feb 14, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3267
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to a needle assembly having a build-in valve (30). The needle assembly is built up from a hub (20) carrying a needle cannula (10) and a telescopically movable shield (40) which axially covers the distal tip (13) of the needle cannula (10) between injections. The valve (30) is operated by the shield (40) and is arranged such that it is closed when the distal tip (13) of the needle cannula (10) is covered by the shield (40) and is opened when the telescopically movable shield (40) has been retracted a specific distance (X) proximally to the distal tip (13) of the distal cannula part (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.