Method for characterizing the physiological state of a patient from the analysis of the cerebral electrical activity of said patient, and monitoring device applying said method
US10939838B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 3, 2013 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Oct 6, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a method for detecting a physiological state of a patient deviating from a reference physiological state, in which, after having determined, in each of Q frequency bands, R reference matrices PRq,r with qe[1 . . . Q] and rϵ[1 . . . R] which correspond to the reference physiological state, the following steps are repeated in a loop: carrying out measurements, in M time segments, of an electroencephalographic signal; filtering and centering the measurements in Q frequency bands to obtain and determine M×Q scaled matrices of spatial covariance; for each time segment m, calculating a deviation from the reference physiological state, and comparing each of the deviations from the reference physiological state to a predefined threshold. The invention also relates to a monitoring device applying said method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.