Systems and method for metering and timing of fluid flow in a point-of-care diagnostic cartridge
US10449538B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2019 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Feb 25, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N35/00871
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A specimen processing cartridge includes a reservoir having a fluid inlet, an elastic diaphragm, and a fluid outlet. The reservoir is operable to receive a volume of liquid from the fluid inlet, and the fluid outlet is positioned along a fluid flow path between the reservoir and a downstream reservoir. The cartridge includes a dissolvable membrane that occludes flow through the fluid outlet when the dissolvable membrane is in a first, undissolved state, and that permits flow from the reservoir to the downstream reservoir when in a second, dissolved state. The elastic diaphragm is operable to pressurize the reservoir upon receiving the volume of liquid when the dissolvable membrane is in the first, undissolved state, and is operable to contract and propel at least a portion of the volume of liquid from the reservoir to the downstream reservoir when the dissolvable membrane is in the second, dissolved state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.