Nerve signal detection/excitation electrode, twin-electrode, electrode array and preparation methods thereof

Abstract

The invention discloses a nerve signal detection / excitation electrode, a twin-electrode, an electrode array and preparation methods thereof. The electrode comprises an acupuncture needle body, an acupuncture needle of which the lower part is a needle tip and the upper part is a needle handle, and an insulating layer is coated on the part above the needle tip and below the needle handle; and epoxy resin and polyimide composite are adopted as the materials. The setting method thereof is as follows: polymerizing 4, 4'-diaminodiphenyl ether and pyromellitic dianhydride in ice bath with the temperature of 0 DEG C to obtain polyamide according to the molar ratio of 1:1; and adding epoxy resin in the polyamide according to the ration that each 20ml of polyamide is added with 1g of epoxy resin, stirring to enable the solution to be uniform and clear so as to obtain the composite solution of the epoxy resin and the polyamide, using a spin coater for spin coating to enable the needle body of the acupuncture to be coated with a layer of epoxy resin and polyamide composite, placing into an oven for baking for 1h at the temperature of 125 DEG C, then baking for 1h at the temperature of 250 DEG C, and forming the epoxy resin and polyamide composite on the needle body serving as the insulating layer.

Description

technical field [0001] The invention relates to an acupuncture needle as a nerve signal detection and excitation electrode and a manufacturing process, in particular to a nerve signal detection / excitation electrode, a double electrode, an electrode array and a preparation method. Background technique [0002] Neural engineering system is of great significance for people to reveal the working mechanism of the nervous system and explore effective means for the treatment and rehabilitation of neurological diseases, and microelectrodes are the most critical components of the neuro-electronic interface in the neural engineering system. Its main functions are: 1) record nerve action and sensory potential signals for analysis and research, 2) use electrical signals to stimulate or inhibit neural activity to achieve functional electrical stimulation (FES). [0003] The design of microelectrodes for neuro-electronic interfaces depends on the application. In order to make microelectr...

AI Technical Summary

Problems solved by technology

That is, its poor selectivity

Such needles are used for biological signal detection. In addition to the problem of poor selectivity, there is also the problem of strong interference signals and low sensitivity.

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