High-accuracy anti-oxidation electrode
An anti-oxidation and precision technology, which is applied in medical science, sensors, diagnostic recording/measurement, etc., can solve the problems of poor electrode comfort or contact characteristics, poor adhesion of substrate materials, and ineffective contact of electrodes. To achieve the effect of guaranteeing oxidation resistance and electrical conductivity, easy to control, and convenient to disassemble and assemble
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Embodiment 1
[0045] see Figure 1-10 , a high-precision anti-oxidation precision electrode, comprising an electrode main body 5, the inside of the electrode main body 5 is screwed to the lower end of the screw knob 20, the outside of the motor main body 5 is screwed to the chassis 19, and the outer lower end of the chassis 19 is movably connected to the fixed plate 14;
[0046] The inside of the electrode main body 5 is provided with a cylindrical cavity 18, the outside of the electrode main body 5 is provided with an electrode external thread 6, the lower end of the electrode main body 5 is provided with an electrode head 16, and the middle part of the inside of the electrode head 16 is provided with a conductive paste extrusion hole 7. The bottom of the chamber 18 is fixedly connected to the upper surface of the electrode head 16;
[0047] The screw knob 20 includes a knob cap 1 and a screw rod 2, the middle part of the lower surface of the knob cap 1 is fixedly connected with the upper ...
Embodiment 2
[0062] The present invention has designed a new type of EEG electrode suitable for hairy areas. The base material is aluminum, and the surface is plated with a gold coating. This treatment method can not only ensure the conductivity of the electrode body 5, but also enhance Its antioxidant properties make it durable for long-term use. There is a chassis 19 for fixing on the outside of the electrode main body 5, which can form a stable base at the hole corresponding to the lead on the EEG cap, so that it can be firmly fixed, and allows the electrode to be used in special cases such as reducing the number of leads. The electrode part is removed to achieve modularization and specialization; the fixed plate 14 has a toothed structure processed along the thread direction, allowing the user to control the depth of the electrode through rotation, ensuring the depth of the electrode at different positions on the EEG cap reached the appropriate value. A certain amount of conductive pa...
Embodiment 3
[0067] In the present invention, the performance test of the electrode is based on the one-time measurement electrode standard, and the impedance-frequency curve of the designed electrode can be measured through the electrochemical workstation, as follows Figure 8 As shown, some other advanced products can gradually change from tens to thousands of ohms as the frequency changes, such as Figure 9 , while the contact impedance of ordinary dry electrodes is at the kilohm level, such as Figure 10 . It can be seen from the figure that in the low frequency band, the electrode contact impedance is about 1kΩ, and the impedance will decrease as the frequency increases, and its performance is stable and reliable;
[0068] In the present invention, the electrode of this type can be manufactured at a relatively low price, and the curved surface design of the electrode head can ensure comfort and avoid discomfort. Its low impedance can better guarantee the quality of the collected EEG...
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