Injection needle assembly and drug injection device
US9302051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2011 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Feb 27, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/3137
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A needle does not come off even if a high back pressure occurs at the skin upper section. Thus, the drug leakage from the skin can be prevented. A drug administration device 1 includes a tubular section 2 having a fluid chamber 7 capable of accommodating a drug and a discharge section 22, a pusher member 3 moving within the tubular section 2, a grip section 4, and a connection section 5. The pusher member 3 includes a rod-shape plunger 31 and a gasket 32. The grip section 4 is disposed along the outer periphery of the tubular section 2 and kept away from the tubular section 2, and the connection section 5 is formed between the tubular section 2 and the grip section 4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.