JPH0453764Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a head electrode attachment device for measuring electroencephalograms.

[Prior art and its problems]

In order to measure brain waves, many electrodes must be attached to predetermined locations on the head. At this time, in order to reduce the impedance and potential difference between the skin on the head and the electrodes, it is necessary to ensure contact between the two. Conventionally, each electrode was placed in a predetermined position with tape coated with adhesive. It is attached to the skin of the head. Therefore, it is very time-consuming and causes considerable pain to the subject when attaching and detaching the electrodes.

For this reason, when a head electrode for electroencephalogram measurement, which has a tip embedded with electrodes and soaked in conductive solution, is attached to a rigid helmet-like hat and worn on the head, the tip is exposed to the skin of the head. This makes it possible to measure brain waves without causing pain to the subject.

However, since the size and shape of the head differs depending on the subject, there is a problem in that even if a rigid cap is placed on the head, the tip does not always contact a predetermined part accurately.

[Purpose of invention]

Therefore, the purpose of the present invention is to provide a head electrode attachment device for measuring brain waves that can easily and reliably contact the skin of a predetermined area of the head to accurately measure brain waves. .

[Structure of the idea and its effects]

The head electrode attachment device for electroencephalogram measurement of the present invention consists of a rigid cap with multiple holder mounting holes at predetermined positions, and a chip in which electrodes are embedded and soaked with conductive solution, which is protruded by a spring. The chip holder is held in a rigid state and is fixed to the holder mounting hole of the rigid cap.The holder mounting hole is bored in the shape of a cross, and the fixed position of the chip holder can be finely adjusted along the cross shape. It is characterized by this.

In other words, since the tip holder is attached to a rigid hat (for example, a helmet), when this rigid hat is worn on the head, a predetermined number of electrodes simultaneously contact the skin of the head via the tip, so adhesive tape, etc. The mounting operation is very simple and does not cause any pain to the patient, but since the holder mounting hole is drilled in a cross shape, the tip holder can be fixed at a position that is easy to place on the patient. It can be finely adjusted according to the shape of the head, and accurate measurements can be made regardless of the shape of the subject's head.

〔Example〕

The present invention will be specifically described below based on embodiments shown in the drawings.

Inside the outer cylinder 11 of the tip holder 1 is an inner cylinder 12.
A spring 13 is interposed between the outer cylinder 11 and the inner cylinder 12, so that the inner cylinder 12 is urged forward. and,
A tip 3 is fixed to the opening at the tip of the inner cylinder 12 and projects forward. The chip 3 is formed by bundling fibers of about 3 denier, and has electrodes 4 made of silver monochloride, platinum, etc. buried inside. A conductive wire 5 is connected to the tail end of the electrode 4 and extends to the outside of the chip holder 1. Note that the chip 3 is not limited to one made of fiber; for example, it can be made of a plastic chip with open cells, which has high flexibility and restoring force, and is not impregnated with a conductive solution. It's fine as long as it's possible.

As shown in FIG. 2, a predetermined number of cross-shaped holder attachment holes 21 are bored in predetermined positions of the rigid cap 2, which is molded into a helmet shape using acrylic resin or the like.

Therefore, when measuring brain waves, the chip holder 1 is attached to appropriate positions of a predetermined number of cross-shaped holder attachment holes 21 using nuts 22 and 23, depending on the shape of the subject's head. Install it with 3 facing inside. And to chip 3,
For example, a conductive solution such as a potassium chloride solution may be soaked in the cap, and the subject may wear a rigid cap 2 on the head. As a result, regardless of the shape of the subject's head,
A predetermined number of chips 3 are brought into strong simultaneous contact with predetermined positions on the head due to the elastic force of the spring 13. That is, the electrode 4 contacts the skin on the head via the tip 3, but since the tip 3 is soaked with a conductive solution, the potential difference and impedance between the electrode 4 and the skin on the head are small and accurate. It is possible to measure brain waves.

In this way, since the holder attachment hole 21 is cross-shaped, the tip holder 1 can be attached at a position suitable for the shape of the subject's head by using this, and the rigid cap 2 can be attached to the head of the subject. The operation is very simple because a predetermined number of chips 3 can be accurately attached to predetermined positions at the same time by just putting the chips over the cap.

[Effect of idea]

As explained above, the present invention provides a plurality of cross-shaped holder mounting holes in which head electrodes for electroencephalogram measurement, each having a tip embedded with an electrode and soaked with a conductive solution, are provided at predetermined positions on a rigid cap. Because it is fixed to the body, multiple electrodes can be easily and reliably brought into contact with the skin of a predetermined area of the patient's head, regardless of the shape of the patient's head, causing no pain to the patient. It can be used as a head electrode attachment device for electroencephalogram measurement that does not require any electroencephalogram.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of an embodiment of the present invention, FIG. 2 is an explanatory view of the holder attachment hole, and FIG. 3 is an explanatory view of the state of use. 1... Chip holder, 13... Spring,
2...Rigid cap, 21...Holder mounting hole, 3...
...chip, 4...electrode.

Claims (1)

[Claim for Utility Model Registration] A rigid cap with a plurality of holder mounting holes at predetermined positions, and a chip in which an electrode is embedded and soaked with a conductive solution is held in a protruding state by resiliently using a spring. , a chip holder fixed to the holder mounting hole, the holder mounting hole is bored in a cross shape, and the fixed position of the chip holder can be finely adjusted along the cross shape. Head electrode attachment device for measurement.