Microelectrode and preparing method and neural prosthesis thereof

Abstract

The invention provides a microelectrode which comprises a flexible layer, a conductive layer and a plurality of dendrite platinum structures. The conductive layer is arranged in the flexible layer. The surface of the flexible layer is provided with a plurality of grooves for exposing part of the conductive layer. Each dendrite platinum structure is arranged in the corresponding groove. The groovesform a plurality of focusing electrodes, and the electrodes are small in locus, plentiful in recording point and even in distribution; by means of the modifying dendrite platinum structures, the surface area, electrical performance, biocompatibility and service life of the microelectrode are improved and prolonged; meanwhile, through a current steering technology, a virtual electrode is established, the number of irritations received by the microelectrode in the use process is increased, and the resolution ratio of the microelectrode during application is increased.

Description

technical field [0001] The invention relates to the field of biomedical engineering, in particular to a microelectrode, a preparation method thereof, and a neural prosthesis. Background technique [0002] As one of the most important implantable microdevices, nerve electrodes are used to stimulate nerve tissue or record nerve electrical signals, and are widely used in the fields of life sciences such as neurophysiology and brain science research. However, as clinical requirements for stimulation or recording accuracy are getting higher and higher, low-density, simple-function nerve electrodes can no longer meet the needs of precise regulation. Nerve electrodes are developing toward integration and miniaturization. Therefore, the reduction in the size of microelectrodes leads to performance problems such as increased electrode impedance and reduced capacitance, which limits its clinical application. Therefore, in a limited space, design a multi-focus electrode to balance the...

AI Technical Summary

Problems solved by technology

However, as the clinical requirements for stimulation or recording accuracy are getting higher and higher, low-density, simple-function nerve electrodes can no longer meet the needs of precise regulation.

Nerve electrodes are developing in the direction of integration and miniaturization. Therefore, the reduction in the size of microelectrodes causes performance problems such as increased electrode impedance and reduced capacitance, which limits its clinical application.

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