Single-use needle-less hypodermic jet injection apparatus and method
US6264629A · kind A · utility
189Cited by
10References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Feb 18, 2019 |
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 includes a hand-held injector, and a drug injection cartridge which provides a cylinder of liquid medication to be injected, an injection orifice, and an injection piston. Forceful movement of the injection piston in the cylinder causes an injection jet of medication to be expelled from the injection orifice. The injection device also includes a hermetically sealed gas pressure capsule 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.