Multi-layer flexible high-density brain electrode and preparation method thereof

Abstract

Provided is a multi-layer flexible high-density brain electrode and a preparation method thereof. The multi-layer flexible high-density brain electrode includes a plurality of stacked single-layer electrodes and an isolation layer covering the upper surface of the uppermost single-layer electrode; The single-layer electrode includes a flexible substrate and a plurality of metal electrodes; the flexible substrate is used to be closely attached to the cortical surface layer of the brain, and the metal electrodes are grown on the upper side of the flexible substrate; the metal electrodes It includes contact points, lead wires and lead-out points connected in sequence, the contact points are used to collect physiological signals, the lead wires are used to receive the physiological signals and transmit them to the lead-out points, and the lead-out points are used to connect with external equipment to transmit the physiological signal outward; two adjacent single-layer electrodes are staggered in a direction perpendicular to the stacking direction of the plurality of single-layer electrodes.

Description

technical field [0001] The invention relates to the field of medical devices, and in particular relates to a multi-layer flexible high-density brain electrode and a preparation method thereof. Background technique [0002] EEG is a graph obtained by amplifying and recording the spontaneous biopotentials of the brain through sophisticated electronic instruments. Since the electrical activity of the entire brain needs to be recorded, a large number of brain electrodes need to be set up. Implantable cortical electrodes are widely used in neurological research and clinical diagnosis due to their advantages of small size and high resolution. However, when the electrode density is too large, the problem that the extraction point cannot be extracted is a technical bottleneck that hinders the further development of high-density brain electrodes. [0003] There is a need to provide a method for preparing a multi-layer flexible high-density brain electrode, by using the method to pr...

AI Technical Summary

Problems solved by technology

However, when the electrode density is too large, the problem that the extraction point cannot be extracted is a technical bottleneck that hinders the further development of high-density brain electrodes.

[0003] It is necessary to provide a method for preparing a multi-layer flexible high-density brain electrode, by using this method to prepare a multi-layer flexible high-density brain electrode to solve the problem that the lead-out point cannot be drawn out when the electrode density is too large

Images