Intracranial cortex electrode

Abstract

The invention discloses an intracranial cortex electrode. The intracranial cortex electrode is composed of an insulated flexible substrate, multiple electrode points embedded in the flexible substrate, electrode wires buried in the flexible substrate and electrode sleeves collecting the electrode wires. Due to a channel formed in the flexible substrate, obstructive tissue fluid between the electrode and brain tissue can be easily discharged, the fitness of the electrode on the brain tissue can be improved, and then monitoring quality can be guaranteed; besides, the intracranial deep electrode can enter the deep brain conveniently through the channel to detect brain electrical activity signals of deep brain tissue. Meanwhile, according to needs, a reinforcing net can be buried in the flexible substrate, and different electrode wire outlets can be formed in the flexible substrate.

Description

technical field [0001] The invention relates to an electrode for sensing and recording intracranial biological waves, in particular to an intracranial cortical electrode. Background technique [0002] The human brain continues to emit weak bioelectrical signals, which are called brain waves, which are an intuitive reflection of brain activity. By monitoring and studying these tiny electrical signals, we can understand the real-time physiological state of the brain. Brain diseases or brain tissue lesions can cause abnormal brain tissue discharges, especially epilepsy, a disease that can cause strong abnormal discharges in the brain. Monitoring EEG signals can help doctors determine the type of disease and the location of the disease. In order to determine the treatment Scenarios provide valuable information. [0003] People first used disc-shaped metal electrodes with wires to stick on the scalp to collect the EEG signals from the brain to the scalp and transmit them to the...

AI Technical Summary

Problems solved by technology

[0006] When the intracranial cortical electrode covers the brain tissue, the interstitial fluid existing on the surface of the brain tissue can easily block the contact between the electrode and the brain tissue, resulting in signal weakening or loss of signal

In the process of electrode monitoring, the signal will be weakened or lost due to the secretion of interstitial fluid by the brain tissue or the infiltration of interstitial fluid from other parts into the gap between the electrode and the brain tissue.

At the same time, because the surface of the brain is a circular arc surface, due to the limitation of the softness and stretching degree of the intracranial cortical electrodes on the rectangular plane, it is inevitable that some parts will not fit well, resulting in unstable contact between the electrode point and the surface of the brain tissue. , affecting the reception of EEG signals

In some cases where long-term embedding is required, the soft silicone matrix may be damaged due to external force, resulting in a second operation to re-embed the electrode

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