Method and device for determining the coagulation time of a blood sample, and reaction cuvette
US10605801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2015 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | May 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0089
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This determination method comprises the steps consisting of providing a reaction vessel (2) containing a blood sample (33) and a ferromagnetic ball (11) placed on a raceway (9) provided in the bottom of the reaction vessel (2), subjecting the ball (11) to a magnetic field so as to move the ball along the raceway (9) in an oscillatory motion, exposing the blood sample to an incident light beam (36), detecting a light beam (38) transmitted through the reaction vessel (2) and coming from the incident light beam (36) in such a way as to provide a measurement signal, carrying out a first processing of the measurement signal in such a way as to provide a first signal representative of the variation of at least one physical quantity representative of the movement of the ball (11), carrying out a second processing of the measurement signal in such a way as to provide a second signal representative of the variation of at least one optical property of the blood sample, determining a first value of the coagulation time of the blood sample from the first signal, and determining a second value of the coagulation time of the blood sample from the second signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.