Microfluidic devices
US11833513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2022 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Jul 6, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/088
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A microfluidic device comprising: an inlet section, for receiving a body fluid sample, the inlet section comprising an inlet port arranged to receive a supply of body fluid; a metering function configured to receive body fluid from the inlet section and comprising a first channel; and a sequent section configured to receive the body fluid from the metering function and comprising a second channel, wherein the first channel comprises a capillary stop valve configured to interrupt or reduce flow of the body fluid therethrough, and a means for visual inspection arranged adjacent to the capillary stop valve, wherein a geometry and/or dimension of the inlet port is configured such that when the supply of body fluid to the inlet port is removed, the Laplace pressure of a body fluid meniscus at the inlet port is higher than a threshold pressure of the capillary stop valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.