Needleless injector
US6939323B2 · kind B2 · utility
43Cited by
32References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2002 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Jul 19, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/0272
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An injector includes a housing having a chamber for holding a liquid formulation of an active principle to be injected into a biological body and an output port in fluid communication with the chamber through which the liquid formulation is injected. A piston is positioned within the housing, and includes an end portion with substantially the same shape as the chamber. A magnetic force draws the piston and housing together to expel the liquid formulation out of the chamber through the output port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.