Intelligent intracranial cortex electrode and electrocorticogram accurate-collection method thereof

Abstract

The invention relates to an intelligent intracranial cortex electrode. The intelligent intracranial cortex electrode comprises a 'comb-shaped' strip/sheet electrode array (I) and an intelligent electrode contact state detector (II); the 'comb-shaped' strip/sheet electrode array (I) is composed of m same n-point strip electrodes, and comprises 'comb-shaped' flexible bases (1), array electrodes (2)embedded into the flexible bases (1), wire electrodes (3) embedded into the flexible bases (1), lead wire sleeves (4) for packaging the wire electrodes (3) and electrode output plugs (5). All the flexible bases (1) are connected at the 'comb backs' of the 'comb-shaped' flexible bases (1), and are separated at 'comb teeth', the electrode can be in good contact with cerebral cortexes, and fixation of relative positions between all electrodes is kept. The intelligent electrode contact state detector (II) is connected with the 'comb-shaped' strip/sheet electrode array, the contact state between the electrode and the cerebral cortexes can be detected in real time, and therefore accuarate collection of ECoG is guaranteed.

Description

technical field [0001] The invention relates to the technical field of neurosurgery clinical application of EEG analysis, in particular to an intelligent intracranial cortical electrode and a method for accurately collecting cortical EEG. Background technique [0002] Based on the principle of human bioelectricity and nervous system reflex arc, as well as the principle of functional EEG specificity, intraoperative brain function localization based on electrocorticogram (ECoG) analysis is widely used in the scientific research of the nervous system and the clinical application of neurosurgery. . Intraoperative brain function localization based on cortical EEG analysis first implants subdural intracranial cortical electrodes in the brain, takes intraoperative matrix electrode pictures, and collects cortical EEG signals of various brain function activities; Simultaneously identify and locate the image coordinates and serial numbers of subdural matrix electrodes; finally draw t...

AI Technical Summary

Problems solved by technology

However, when multiple strip-shaped intracranial cortical electrodes are placed on the cerebral cortex, their relative positions are not easy to fix, which is not conducive to identifying and positioning the image coordinates and serial numbers of the intracranial cortical electrodes.

[0005] To sum up, whether it is a strip-shaped or a sheet-shaped intracranial cortical electrode, there are four problems in the contact state between the electrode and the surface of the intracranial cortex to varying degrees: poor contact or suspension of the electrodes, short-circuiting of the electrodes, and unstable relative positions of the electrode coordinates , and the occurrence of the above problems is random, which makes the acquisition of EEG signals uncertain

It will lead to inaccurate, incomplete and uncertain collected EEG signals, making it impossible to accurately model and analyze EEG signals and locate brain functional areas during surgery

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