JPH0634603U - Simple EEG electrode installation device - Google Patents

Abstract

(57) [Abstract] [Purpose] To make it easy to install and fix EEG electrodes in a short time. [Structure] An electrolyte solution is infiltrated into the tip portion 5 having a metal electrode at the base portion. The support rod 3 is extended to bring the tip 5 into contact with the head. Support rod 3 while pressing tip 5 against head
Repeatedly rotating forward and backward, the hair is scraped off and the tip 5 comes into contact with the scalp. Further, the skin oil is removed by the friction between the tip portion 5 and the scalp, the electrode resistance is lowered, and the brain wave can be recorded from the metal electrode. After recording the electroencephalogram, the tip 5 is removed and washed.

Description

[Detailed description of the device] (Industrial application field)   In this utility model, an electroencephalogram electrode is placed at a site similar to the International 10-20 method, and The present invention relates to an electroencephalogram electrode installation device that simply and easily reduces electrode resistance. (Conventional technology) Conventionally, in order to set the electrode position according to the international 10-20 method, etc. Degreasing the scalp to reduce the electrode resistance after measurement is required and the electrode placement is determined. It required complicated manual work such as fixing the electrodes and electrodes. (Device configuration) The present invention was made to simplify these complicated manual operations in a short time. Explain it to the drawings, (1) Setting of electrode arrangement. As shown in Figs. 1 and 2, the cylinder is fixed to the hemisphere so as to correspond to the international 10-20 method. And the axis of the cylinder points to the center of the hemisphere. From the left and right external ear canal and the root of the nose to the center of the skull Set a point and align it with the center of the hemisphere. (2) Electroencephalogram electrode and support rod As shown in Fig. 3, at the base of the tip (sponge, felt, etc.) infiltrated with the electrolyte solution. Has a fixed pedestal. Attach the tip and pedestal to the end of the support rod with double-sided tape. . The metal electrode is exposed at the end of the support rod and touches the tip. Replenish electrolyte solution A tube opens above the metallic electrode. When the clamp is removed, the support rod It grows toward the center point with force. The support rod can rotate in the cylinder. (Usage and effect) Place the hemisphere on the subject's head and set the center point of the skull from the left and right external ear canals and the root of the nose And make it coincide with the center of the hemisphere. Soak the electrolyte solution in advance at the tip. . Remove the clamp and extend the support bar toward the center until it contacts the hair or scalp. Busu. Next, when the support rod is repeatedly rotated forward and backward, the hair is gradually scraped away and the tip Contact the scalp. Repeated forward and reverse rotation causes sebum on the scalp to rub against the tip. The electrode resistance is reduced and the electroencephalogram can be recorded. After that it is pressed by the force of the spring Then fix the electrode to the head. Inject the electrolyte solution from the tube occasionally to dry the tip. prevent. After the end, it can be washed by removing the tip from the support rod. (Example) Since this proposal has the above-mentioned configuration, the arrangement of the electroencephalogram electrodes is in accordance with the International 10-20 method. It is not limited to 19 locations, but can be installed in multiple locations of more than 100 locations if the number of electrodes is increased. Becomes The center point of the skull can also be set from the left and right external ear canals and the occipital pole. Also, if the position of the cylinder is changed, it is possible to correct the electrode position. (Effect of the device) Fp1, Fp2, F3, F4, F7, F8, Fz, according to International 10-20 Law A device having 14 electrodes corresponding to C3, C4, P3, P4, Pz, T5 and T6. Prototype the device and set the center point of the skull from the left and right external ear canals and the root of the nose with the consenting subject. When tested, the following effects were obtained. (1) Even if the head has a large variation such as a short skull, the country is set within 3 minutes including the setting of the center point. In this case, the electrode was placed at a site close to the 10-20 method. With conventional manual measurement Took 10 minutes or more just to set the electrode position. The gap with international 10-20 law is before Practical approximation is within 1.5 CM for head and within 2.5 CM for occipital region It was (2) Extend the support rod and keep it in contact with the head about 15 times repeatedly in half in the forward and reverse directions. When rolled, the hair is scraped off, the scalp is rubbed, and the electrode resistance is below 5 Kohm. Fell in. The subject had no pain and the electrode resistance at 14 locations was 5 koh within 8 minutes It fell to m or less. Conventionally, there is only one place to reduce the electrode resistance to 5 kohm or less. 2 minutes or more, and 14 places required 30 minutes or more of manual work. EEG electrode setting The total time required for placing was 11 minutes, which is significantly shorter than the conventional 40 minutes. It was (3) The electrode resistance should be 5 kohm or less for 15 minutes or more without replenishing the electrolyte solution. When the maintained electrolyte solution was replenished, the low resistance was maintained for a longer time. Subject is light I felt a sense of oppression, but no pain. (4) Since saturated saline was used as the electrolyte solution, there was almost no stain on the head even after the end. It was. Conventionally, the head is soiled because a paste or the like is used for energizing and fixing the electrodes.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view of an electroencephalogram electrode installation apparatus of the present invention including the left side of the head, and FIG. 2 is an electroencephalogram electrode installation of the present invention including the front of the head. Front sectional view of the device, FIG. 3 is an enlarged vertical cross-sectional view of the electroencephalogram electrode tip, support rod, etc., 1 is a hemisphere, 2 is a cylinder, 3 is a support rod, 4 is a clamp
5 is a tip portion 6 is a base 7 is double-sided tape 8 is a metal electrode 9 is a conductor wire 10 is a tube 11 is a spring 12 is a hemispherical fixed leg

Claims (1)

[Claims for utility model registration] (1) Consider the skull as a hemisphere and divide the interior angle around the virtual center point. The intersection of the dividing line and the scalp is the electrode position. (2) There is an electrode having a soft and conductive tip that is infiltrated with an electrolyte solution, and a supporting rod for the electrode. By rotating the supporting rod, friction between the scalp and the leading end lowers the electrode resistance. The electroencephalogram electrode installation device configured as described above.