Durable hypodermic jet injector apparatus and method
US6752781B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jan 25, 2002 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Jan 25, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3125
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A gas-powered, durable, needle-less hypodermic jet injection device (10, 210) includes a hand-held injector (12, 212) which receives into an injection cylinder 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 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 usability, particularly for users with hands that are possibly weak, feeble, or arthritic, for example; and also includes additional features which improve manufacturability, durability, and cost effectiveness of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.