Multiple dose syringe and method
US9205198B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2013 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Jan 17, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F11/028
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A multiple dose syringe has a first valve defining a first valve opening pressure and a second valve defining a second valve opening pressure. A storage chamber in fluid communication with the second valve stores multiple doses of a substance therein and includes an outlet for dispensing multiple doses of the stored substance therethrough. A compression surface is movable between first and second positions and defines a compression chamber between the compression surface and the first valve. Movement of the compression surface in a direction from the first position toward the second position dispenses substance in the compression chamber through the first valve and out of the syringe. Movement of the compression surface in a direction from the second position toward the first position causes substance to flow from the storage chamber through the second valve and into the compression chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.