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

A nerve signal and electrode technology, applied in the direction of electrodes, internal electrodes, diagnostic recording/measurement, etc., can solve the problems of poor selectivity, strong interference signal and low sensitivity, and achieve the effect of reduced electrical impedance and small phase delay

Inactive Publication Date: 2010-09-01
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, its poor selectivity
Such needles are used for biological signal detection. In addition to the p

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]An electrode for nerve signal detection / excitation according to the present invention includes a needle body 1, which is an acupuncture needle with a lower needle point 2 and an upper needle handle 3. The needle body 1 is coated with an insulating layer; and the needle tip 2 is covered with a layer of biocompatible noble metal coating 6 or conductive polymer coating 7 .

Embodiment 2

[0048] An electrode array for nerve signal detection / excitation according to the present invention includes: a polymer material or semiconductor material matrix 8 with good compatibility, at least two electrodes for nerve signal detection / excitation are arranged side by side on the matrix 8, The electrode for nerve signal detection / excitation includes a needle body 1, which is an acupuncture needle with a lower needle point 2 and an upper needle handle 3, and the needle body 1 above the needle point 2 and below the needle handle 3 is coated with an insulating layer; and the needle tip 2 is covered with a layer of biocompatible noble metal coating 6 or conductive polymer coating 7 .

Embodiment 3

[0050] A double electrode excited by a nerve signal according to the present invention includes: an electrode 9 excited by a nerve signal and a ground wire 10, the electrode 9 excited by a nerve signal includes a needle body 1, and the needle body 1 is the lower needle point 2 The acupuncture needle with the upper needle handle 3 is coated with an insulating layer on the needle body 1 above the needle point 2 and below the needle handle 3; and the needle point 2 is covered with a layer of biocompatible noble metal coating 6 or conductive polymer coating 7, said The ground wire 10 is arranged on the needle handle 3 and is arranged side by side with the needle body 1 .

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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...

Claims

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Application Information

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IPC IPC(8): A61B5/00A61N1/05A61N1/36
Inventor 吕晓迎王志功卢杰妍
Owner SOUTHEAST UNIV
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