Device for needleless injection operating with two concentric energetic materials
US7981075B2 · kind B2 · utility
1Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2005 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Jul 12, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/2046
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A needleless injection device used for intradermal, subcutaneous and intramuscular injections is disclosed. The device includes a pyrotechnic gas generator, at least one piston, a reserve of liquid active principle and an injection nozzle. The generator includes a pyrotechnic charge composed of a central energetic material that is surrounded by a second peripheral energetic material. The entire outer surface of the central energetic material contacts the inner surface of the peripheral energetic material. The two energetic materials have different rates of combustion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.