Extensible capacitive flexible biological electrode array and preparation method thereof

A bio-electrode and flexible technology, applied in the field of medical devices, can solve problems such as contact mismatch and influence of signal acquisition effect, and achieve the effect of excellent fitting effect, good extensibility, and high-quality signal acquisition effect.

Inactive Publication Date: 2019-11-26
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional rigid electrodes often have the problem of contact mismatch with soft and curved biological tissues, which affects the signal acquisition effect to a certain extent

Method used

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  • Extensible capacitive flexible biological electrode array and preparation method thereof
  • Extensible capacitive flexible biological electrode array and preparation method thereof
  • Extensible capacitive flexible biological electrode array and preparation method thereof

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Experimental program
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Embodiment 1

[0036] Such as figure 2 As shown, this embodiment provides a method for preparing a stretchable capacitive flexible bioelectrode array, which specifically includes the following steps:

[0037] Step 1: Place SiO with size 16mm x 12mm 2 The substrate was cleaned with acetone and alcohol, and then a layer of photoresist was spin-coated on it, heated at 100°C for 2 minutes to dry, and a layer of 120 μm thick PDMS film was spin-coated on the photoresist, and then placed in Heating in an oven at 60°C for 1 hour and curing to obtain a PDMS substrate, wherein the PDMS film is obtained by mixing the resin and the curing agent uniformly in a ratio of 10:1;

[0038] Step 2: Place the SiO with the size of 16mm×12mm 2 The substrate was cleaned with acetone and alcohol, and then a layer of PI with a thickness of 2 μm was spin-coated on it, and then placed in an oven at 180 ° C for 2 hours to cure;

[0039] Step 3: Prepare a 200nm thick, 2×2 Au electrode array on the surface of the PI f...

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Abstract

The invention provides an extensible capacitive flexible biological electrode array and preparation method thereof, and belongs to the technical field of medical apparatus and instruments. According to the provided biological electrode array, a four-layer structure of an extensible flexible base, an extensible flexible interlayer, a metal electrode array and an extensible flexible dielectric layeris adopted, the extensible flexible base is combined with an S-shaped guide line, and signal collecting is achieved. The biological electrode can be bent, the stretching effect which cannot be achieved through an existing flexible biological electrode can further be achieved through the biological electrode, tightly-attaching to the surface of biological tissue can be guaranteed benefiting from the good extensibility of the biological electrode, especially for the nearly-spherical parts in the brain, the attaching effect of the biological electrode is more excellent, and the signal collectingeffect with higher quality can be obtained.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an extensible capacitive flexible biological electrode array and a preparation method thereof. Background technique [0002] The monitoring of neurophysiological activity plays an important role in the field of medicine and is also an important means of deepening our understanding of the underlying physiological functions. In neurophysiological monitoring technology, single-neuron recording (single-neuron recording), electroencephalogram (EEG) recording and electrocorticography (ECoG) recording are three common recording methods. For long-term neural signal monitoring, electrocorticography (ECoG) is a better choice because it can ensure less damage to the brain with high signal spatiotemporal resolution. When monitoring ECoG signals, the quality of the acquired signal is usually affected by the electrical properties of the electrodes and the effect of the con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0478
CPCA61B5/291
Inventor 潘泰松江家豪颜卓程孙晓桐高敏姚光林媛
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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