Needleless syringe comprising an injector with nested elements
US6981961B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2000 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Jul 9, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/3134
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention concerns the 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) initially set between an injector (1, 10) comprising at least an injection nozzle, said injector being 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 syringe downstream end (2). In order to produce nozzles in a considerable injector thickness and to control the jet coherence distance, said injector (1, 10) comprises at least two elements (3, 4) whereof the contact surfaces (30, 40, 40′) are oriented towards the skin, at least a groove (31, 41, 41′) forming an injection nozzle in the assembly of said elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.