Single-use needle-less hypodermic jet injection apparatus and method
US6689093B2 · kind B2 · utility
153Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 5, 2001 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | May 7, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3132
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A gas-powered, single-use, needle-less hypodermic jet injection device (10, 210, 410) includes a hand-held injector (12, 212, 412), and a drug injection cartridge (14, 114, 414) which provides a volume of liquid medication to be injected, an injection orifice, and an injection piston. Forceful movement of the injection piston causes an injection jet of medication to be expelled from the injection orifice. The injection device also includes a hermetically sealed gas pressure cartridge (82, 182, 482) which remains sealed until the moment of injection and powers the jet injection after opening of this cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.