Needleless injector
US9629960B2 · kind B2 · utility
0Cited by
35References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2014 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Mar 21, 2035 |
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.