Disposable injection needle
US11517681B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2019 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Sep 22, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3267
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present disclosure relates to a disposable injection needle including: a needle mount having a tube needle; a first sleeve, one end of which is suitable for connecting to the needle mount to define receiving space, and the other end of which is provided with a first opening; a second sleeve, one end of which is located inside the receiving space, and the other end of which having a second opening; an elastic element adapted to allow the second sleeve moves axially toward outside the receiving space, wherein: the needle mount or the first sleeve is provided with a stop surface and a limit groove; the second sleeve is provided with a limit arm comprising a limit face and a protruding member which is adapted to enter the limit groove with axial relative movement between the first sleeve and the second sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.