Systems and methods for controlling excessive fluid flow in a cassette designed to receive a fluid sample
US10688486B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2016 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Sep 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/00128
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pinch wall and dam system for controlling fluid flow movement between a sample receiving pad and a test strip includes a sample receiving pad and a test strip in contact with the sample receiving pad. The fluid seeps more quickly under the first portion of the pinch wall than under the second portion of the pinch wall, such that the test strip becomes saturated prior to excess fluid being absorbed in the portion of the sample receiving pad away from the test strip such that the test strip does not become flooded, the portion of the sample receiving pad positioned away from the test strip being sufficiently sized to absorb the excess fluid. The pinch wall and dam system further includes a dam, sitting on top of the sample receiving pad, the dam preventing the backflow of fluid from an area near the first portion of the pinch wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.