Jet injector apparatus and method
US6585685B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2002 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | May 9, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3125
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A gas-powered, durable, needle-free hypodermic jet injection device includes a hand-held injector which carries a disposable injection cartridge with a volume of liquid medication to be injected in the form of a high velocity jet capable of penetrating the skin without the use of a hypodermic needle. The injection device provides an injection orifice, and an injection piston. Forceful movement of the injection piston caused by high pressure gas causes a high velocity injection jet of liquid medication to be expelled from the injection cylinder via the injection orifice. The injection device includes features which improve its safety, and also which improve its ease of manufacture, its durability, and its cost effectiveness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.