Needleless syringe functioning by shock-tube effect, with prior lateral retention of the active principle
US6911015B2 · kind B2 · utility
8Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2000 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Apr 18, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/2046
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention concerns a needleless syringe (1) comprising a trigger, a gas generator (2) prolonged by a gas expansion chamber (3), a system for retaining particles and an ejection tube (4). The invention is characterised in that the particles are housed outside the ejection tube conduit (4) and the gases cause the particles to reach inside said tube (4) by displacing a plunger (13), prior to speeding them up by wave shock inside the tube (4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.