Particle delivery
US6685669B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1997 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Jun 23, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0057
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A needleless syringe comprising a body containing a lumen, an upstream end of which is, or is arranged to be, connected to a source of gaseous pressure which can suddenly be released into the lumen; the downstream end of the lumen terminating behind a bistable diaphragm which is movable between an inverted position in which it presents outwardly of the body a concavity for containing particles of a therapeutic agent, and an everted, outwardly convex, position; the arrangement being such that, in use, when gas under pressure is released into the lumen, the diaphragm will snap over from its inverted to its everted position and catapult the particles outwardly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.