Needleless injector
US8343130B2 · kind B2 · utility
15Cited by
34References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 15, 2011 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Apr 15, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/312
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A needleless injector has a syringe body having an opening at one end, a piston housed within the syringe body for urging a liquid within the syringe body through the opening and a ram for driving the piston. A shock absorbing component is provided for reducing an initial transfer of force from the ram to the piston. The initial rate of pressure increase on the liquid is reduced, thereby controlling the rate of collapse of gas bubbles in the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.