Needle-free injection system
US6676630B2 · kind B2 · utility
134Cited by
49References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2002 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Jun 25, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/30
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A needle-free injection device. The injection device includes a user-grippable housing and a syringe assembly movably secured to the housing. The syringe assembly is configured to expel injectable fluid out of a nozzle upon application of pressurized gas to the syringe assembly. The injection device also includes a pressurized gas delivery mechanism disposed within the housing and configured to selectively apply pressurized gas to the syringe assembly. The pressurized gas delivery mechanism is at least partly actuated by pressing the nozzle onto an injection site so that the syringe assembly moves relative to the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.