Simplified disposable needle-free injection apparatus and method
US6645170B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 2001 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Jul 24, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3132
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
One form of the present invention provides a needle-free injection system including the following components: a cartridge for holding liquid drug prior to injection, the cartridge having a rear end and a front end; a plug mounted to the front end of the cartridge, the plug including a channel; a displaceable valve positioned within the channel prior to injection; and a nozzle portion for receiving liquid drug from the glass cartridge for injection, the nozzle portion including an injection orifice and a drug chamber having a valve seat designed to receive the valve to facilitate injection of liquid drug through the injection orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.