Needleless syringe comprising an injector with stacked elements
US6623446B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2001 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Dec 18, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/3134
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention concerns the technical field of needleless syringes for injecting an active principle for therapeutic purposes. More particularly, it concerns a needleless syringe for injecting an active principle (7, 70) initially set between an injector (1, 10) comprising at least an injection nozzle (50, 50′, 60′) contacted with the skin and a wall (8) mobile under the effect of a propelling system (9) pressurizing and expelling the active principle through the injector located at the downstream end (2, 20) of the syringe. In order to produce nozzles passing through a considerable injector thickness and to control the jet coherence distance, said injector (1, 10) comprises a support (3, 21) with at least a housing (4, 40) wherein are stacked plates (51, 61, 91, 51′, 71′, 91′, 52, 92) each comprising an equal number of orifices aligned to form at least a nozzle (50, 50′, 60′) through the stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.