JPH04131210U - Probe attachment device for electroencephalogram measurement - Google Patents

Abstract

(57) [Summary] [Objective] To provide a probe mounting device for electroencephalogram measurement that allows a probe to be easily and quickly placed in a predetermined position. [Structure] A predetermined number of holders to which electroencephalogram measurement probes are attached are attached, and in a hat-shaped electroencephalogram measurement probe attachment device worn on the head, belts 2 and 4 made of elastic strings such as rubber cords are used to A nightcap-type hat 1 is formed, the intervals between the intersections of the belts are set at a predetermined ratio, and the holder 3 is attached to the intersections.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a probe mounting device for electroencephalogram measurement.

0002

[Conventional technology]

In order to measure brain waves, it is necessary to attach as many as 21 brain wave electrodes to predetermined positions on the head. At this time, in order to reduce the impedance and potential difference between the skin on the head and the electrode, it is necessary to ensure contact between the two. Conventionally, for example, conductive silver paste was applied to the surface of the electrode made of a silver plate. These tapes were attached one by one to the skin of the head at the electroencephalogram measurement point using tape coated with adhesive. Therefore, 2 to 3 hours of preparatory work is required before starting measurement, and the subject is caused considerable pain when attaching and detaching the silver plate. After removing the silver plate, it was necessary to wash the head to remove the silver paste. In addition, the silver plate of the electrode is approximately 1 cm ² in size, and even if it is pasted with a paste, impurities are likely to be interposed between the plates, resulting in inaccurate measurements. When the skin becomes keratinized, the impedance and potential difference between the skin on the head and the electrode becomes large, making accurate measurement difficult.

0003 Therefore, for example, a device with a built-in electroencephalogram electrode made of silver-silver chloride and an electrolyte such as potassium chloride can be used. A probe for measuring electroencephalograms is used to detect the electrolyte that protrudes from the tip of the probe and oozes electrolyte. Measurement of brain waves by touching the tip to the brain wave measurement point on the head is being considered. child The electroencephalogram measurement method using an electrolyte solution uses a Place a cap-like or helmet-like probe attachment device on your head and attach it to this holder. When the probes are attached to the holder, multiple probes come into contact with the head at the same time, making it more effective. Brain waves can be measured efficiently.

0004

[Problem that the idea aims to solve]

By the way, in this electroencephalogram measurement method, the position where this probe is attached is, for example, For example, it is determined using the 10-20 method by Jasper (Montreal), but eventually Even with this method, the shape and size of the subject's head varies, so each measurement requires Measure the circumferential line of the head, the midline connecting this circumferential line, and the transverse line connecting both external ears. The electroencephalogram measurement points are determined by proportionally dividing it into a predetermined ratio. For this reason, electroencephalogram measurement It is necessary to measure the head dimensions of the subject every time, and it takes a lot of time to determine the EEG measurement points. It took a lot of effort and time. Therefore, the present invention aims to locate the probe easily and quickly. The purpose is to provide a probe attachment device for electroencephalogram measurement that can be placed in a fixed position. That is.

[0005]

[Means to solve the problem]

In order to achieve this purpose, the present invention provides a holder to which an electroencephalogram measurement probe is attached. A predetermined number of electroencephalogram probes are attached to the hat-shaped probe attachment device for brain wave measurement that is worn on the head. A mesh nightcap type hat with a belt made of elastic string like a rubber cord. In addition to forming a Attach the dar.

[0006]

[Effect]

In other words, a nightcap-type hat made of a belt made of elastic string is worn on the head. When worn, the belt stretches according to the shape and size of the head, but the holder is attached The interval between the intersection points of the belts that are Since the holder spacing ratio does not change and the probe is mounted on the holder, When you put it on, it touches the brain wave measurement point. Therefore, there is no need to measure the dimensions of the head and It also has the advantage of not causing any pain to the examiner.

[0007]

【Example】

The present invention will be specifically described below based on embodiments shown in the drawings. Figure 1 shows the mesh shows a nightcap-type hat 1, which includes a circular belt that is wrapped around the circumference of the head. 4 is made of an elastic string like a rubber string, and in its natural state it is slightly smaller than the length of the circumference of the head. It's getting smaller. There are three head covering belts in each of the front and rear directions and the left and right directions of this circular belt 4. route 2 is connected. These head cover belts 2 are also made of elastic strings, and the belts 2 , 4 form a nightcap type hat 1. And belt 2, 2 Nineteen holders 3 are also attached to the intersections of the belts 2 and 4. here , the spacing of the holders 3 is determined according to the 10-20 method by Jasper. wife The holder 3 attached to the intersection of the head covering belt 2 and the circular belt 4 is 1 on the head, the front part of the circular belt 4 located at the upper part of the nasal root and the occipital tubercle. Between the rear parts of the circular belt 4 located at the top, 10:20:20:20:20 : The holes are located at a spacing ratio of 10 and are attached to the intersections of the head covering belts 2. The router 3 is located at a spacing ratio of 20:20:20:20. Therefore, each hole The dars 3 are located symmetrically in the front and back and in the left and right directions. Note that it is stored on the underside of the circular belt 4. Attach the holding belt (not shown) so that the hat 1 is firmly held on the head. It is better to do so.

[0008] Explaining the holder 3 based on Fig. 2, the fitting part 31 has a probe mounting part on the inner surface. It is a toric body with an internal thread 31a for attachment, and is made of, for example, brass with a gold-plated surface. It is made of aluminum and has electrical conductivity. A lightweight cylindrical body 33 is attached to the fitted portion 31. , a cushion member 32 is attached to the tip of the cylindrical body 33. And conductor 5 is connected to the fitted portion 31, and is connected to an electroencephalograph (not shown).

[0009] Next, to explain the probe 6 based on FIG. 3, for example, the surface is gold plated. The fitting part 61, which is made of brass and has electrical conductivity, has an external thread 61a formed on its outer periphery. The fitting part 61 can be screwed onto the fitting part 31 of the holder 1. . Note that the connection between the fitting part 61 and the fitted part 31 is not limited to screwing, but may also be press-fitting. Good too. A holding body 65 is slidably connected to a cylindrical body 66 fixed to a fitting part 61, An electroencephalogram electrode 62 and a chip 63 are held by a holder 65. EEG electrode 62 is an example For example, it is an electrode plate made of silver-silver chloride, and the chip 63 uses, for example, chloride as an electrolyte. It is a solid gel containing a potash solution, and consists of a half cell consisting of an electroencephalogram electrode 62 and a chip 63. are doing. Then, between the fitting part 61 and the electroencephalogram electrode 62, there is a material made of, for example, phosphor bronze. A conductive spring 64 is interposed between the fitting part 61 and the electroencephalogram electrode 62. electrically connected.

0010 However, when measuring brain waves, as shown in Figure 4, it is necessary to place a night light on the subject's head. A cap-type hat 1 is put on, with the central head covering belt 4 aligned with the midline. At this time, the belts 2 and 4 expand according to the shape and size of the head, but the holder 3 The spacing ratio of will not change and will be placed at the position determined by Jasper's 10-20 method. . Note that the belts 2 and 4 do not necessarily stretch uniformly when worn over the head, and may stretch in some places. Although the holder 3 may deviate from its normal position, the normal position of the holder 3 is Because it is a nominal value, the amount of deviation can be easily checked visually, and it can be easily corrected with your fingertips. Can be placed in regular position. Then, attach the probe 6 to the holder 3. . As a result, the electroencephalogram electrode 62 is electrically connected to the conductor 5, and the probe The tip 63 of No. 6 comes into contact with the scalp in the correct position, and the electrolyte oozes out from the tip 63. EEG can be measured accurately. Also, hat 1 is made of elastic string. This has the advantage of not causing any pressure or pain to the subject.

[0011]

[Effect of the idea]

As explained above, the electroencephalogram measurement probe attachment device of the present invention is a A belt made of elastic string forms a net-like nightcap type hat, and The interval between each intersection point of the route is set at a predetermined ratio, and the probe is attached to the holder at this intersection point. , so there is no need to measure the dimensions of the head, making it easy and quick to use. This makes it possible to place the tube in a predetermined position.

[Submission date] July 5, 1991

[Procedural amendment 1]

[Name of document to be amended] Specification

[Correction target item name] 0002

[Correction method] Change

[Correction details]

0002

[Conventional technology]

In order to measure brain waves, a large number of brain waves, for example 21, are placed in a predetermined area of the head. Electrodes must be attached. At this time, the impedance between the skin on the head and the electrode In order to reduce the potential difference between the two, it is necessary to ensure contact between the two. For example, conductive silver paste is applied to the surface of an electrode made of a silver plate, and this is applied one by one. A piece of tape coated with adhesive was attached to the skin of the head at the point where the EEG was measured. Therefore, about 30 minutes of preparation work is required before starting the measurement, and the silver plate It caused considerable pain to the subject when putting it on and taking it off. And after removing the silver plate The head had to be washed to remove the silver paste. Also, the skin on the head becomes keratinized. Because of this, the impedance between the skin on the head and the electrodes increases, making accurate measurements difficult. There was a problem that made it difficult to

[Brief explanation of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a sectional view of the holder.

FIG. 3 is a cross-sectional view of the probe.

FIG. 4 is an explanatory diagram of the state of use.

[Explanation of symbols]

1 Nightcap type hat 2 Head covering belt 3 Holder 31 Fitted part 32 Cushion 4 Circular belt 5 Conductor wire 6 Probe 61 Fitting part 62 EEG electrode 63 chips

Claims (1)

[Scope of utility model registration request] Claim 1: A hat-shaped electroencephalogram measurement probe mounting device that is fitted with a predetermined number of holders to which electroencephalogram measurement probes are attached, and is a cap-shaped electroencephalogram measurement probe attachment device that is worn on the head. 1. A probe mounting device for electroencephalogram measurement, characterized in that a cap-shaped hat is formed, the intervals between each intersection point of the belt are determined at a predetermined ratio, and a holder is attached to the intersection point.