Single-use needle-less hypodermic jet injection apparatus and method
USRE42463E1 · kind E1 · reissue
53Cited by
20References
35Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2003 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Jul 24, 2023 |
Classification
- Technology area (CPC —)General
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.