JP2006006666A - Electrode device for brain wave detection, brain wave detector, cap and package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To omit the time and labor of cleaning for each inspection, to sanitarily execute the inspection, and to improve handleability. <P>SOLUTION: An electrode device 2 for brain wave detection arranged in contact with the scalp B for detecting brain wave signals comprises a bar-shaped electrode device body 5 for which an electrode 6 is arranged at the distal end and a cap 3 having an elastic member 10 including an electrolyte 11 attached to the distal end of the electrode device body 5 and tightly arranged so as to cover the electrode 6, and a connection means 7 for detachably connecting the cap 3 to the electrode device body 5 is provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electroencephalogram detection electrode device, an electroencephalogram detection device, a cap, and a package.

  Conventionally, analysis of brain function states has been performed for the purpose of early detection of Alzheimer's disease, and various methods for analyzing brain function states have been proposed (see, for example, Non-Patent Document 1 and Non-Patent Document 2). . In this analysis method, an electroencephalogram signal is detected, and the determination is made based on the smoothness of the spatial transmission and the standard deviation. When brain neuron activity is normal, the electroencephalogram signal is transmitted smoothly and there is little variation. It is lost and its standard deviation tends to increase.

  In order to perform such an analysis with high accuracy, it is indispensable to detect an electroencephalogram signal with high accuracy. Electroencephalogram signals are detected by bringing multiple electrodes into contact with the scalp, but in order to achieve a reliable contact between the electrode and the scalp due to the presence of hair and the unevenness of the shape of the head, the electrodes must be applied with paste. It is common to adhere to the scalp. However, when using a paste, it takes a long time to start the inspection, and the burden on the person to be inspected is great. Also, when removing the electrode after the inspection, the hair can be removed to remove the paste. There is an inconvenience that work is required and the burden on the inspected person is large.

  On the other hand, pasteless electroencephalogram signal detection methods that do not use paste have also been proposed (see, for example, Patent Document 1 and Patent Document 2). These detection methods are methods in which a fiber piece in a state where water is absorbed in a conductive solution or a water-containing gel impregnated with conductivity is impregnated into a foaming material, and each electrode is brought into contact with the scalp, and no paste is used. Therefore, there is an advantage that the time required for attachment and removal can be shortened.

Brain Function Research Institute, Inc., “DIMENSION, a new EEG analysis method for detecting functional deterioration of brain cortical neurons in early Alzheimer's disease”, [online], [March 8, 2004 search], Internet <URL: http : //www.bfl.co.jp/abst-32.html> Brain Function Laboratory Co., Ltd., “Method of Estimating Deterioration of Brain Cortical Neuron Function”, [online], [Search March 8, 2004], Internet <URL: http://www.bfl.co.jp/ abst-31.html> JP-A-10-165386 (second page, etc.) Japanese Utility Model Publication No. 2-63811 (FIG. 1 etc.)

  The detection of the electroencephalogram requires accurate placement of a plurality of electrodes, and the electrodes are generally positioned and fixed to a predetermined holder that is placed on the head of the subject. In this case, since the tip of the electrode is placed in contact with the scalp, it must be cleaned for each inspection. However, it is difficult to clean the fiber pieces and the like that have absorbed the conductive solution. Moreover, since there are many electrodes, there exists an inconvenience that a cleaning operation is troublesome.

  The present invention has been made in view of the above-described circumstances, and eliminates the trouble of cleaning for each examination, performs a hygienic examination, and improves the usability, an electroencephalogram detection electrode apparatus, an electroencephalogram examination apparatus, a cap, and a package The purpose is to provide.

In order to achieve the above object, the present invention provides the following means.
The present invention relates to an electroencephalogram detection electrode device that is arranged in contact with the scalp to detect an electroencephalogram signal, and is a rod-shaped electrode device body in which an electrode is disposed at the tip, and is attached to the tip of the electrode device body to cover the electrode There is provided an electrode device for detecting an electroencephalogram comprising a cap having an elastic member containing an electrolyte solution arranged in close contact, and provided with connecting means for detachably connecting the cap to the electrode device body.

According to the present invention, the electrode is covered by covering the rod-shaped electrode device main body with the electrode disposed at the tip, and the elastic member including the electrolytic solution provided in the cap is disposed in close contact with the electrode. Thus, when the elastic member at the tip of the cap is brought into contact with the scalp, the electrolyte contained in the elastic member penetrates into the scalp, and the electrode and the scalp are electrically connected. Will be detected.
In this case, since the cap can be attached to and detached from the electrode device main body by the operation of the connecting means, the cap is attached to the tip of the electrode device main body by the operation of the connecting means at the time of use, and the electrode is covered when not in use. It can be removed from the tip of the electrode device body. That is, the cap can be a disposable part. As a result, it is possible to detect brain waves for a large number of examinees simply and hygienically and at low cost simply by replacing the cap without replacing the electrode device body.

  The present invention also relates to an electroencephalogram detection electrode device that is arranged in contact with the scalp to detect an electroencephalogram signal, and covers a rod-shaped electrode device body having a first contact point disposed at the tip and the tip of the electrode device body. And a cap having a second contact that is brought into contact with the first contact, and connecting means for detachably connecting the cap to the electrode device body is provided, the cap comprising the cap Provided is an electrode device for detecting an electroencephalogram comprising an electrode connected to a second contact and an elastic member containing an electrolytic solution placed in close contact so as to cover the electrode.

  According to the present invention, when the cap is attached to the tip of the electrode device main body by the operation of the connecting means at the time of use, the first contact and the second contact are connected to electrically connect the electrode device main body and the electrode of the cap. Connection is made. Since the cap is provided with an elastic member containing an electrolytic solution, when the tip of the cap is brought into contact with the scalp, the elastic member is elastically deformed to be in close contact with the scalp, and the electrolytic solution contained in the elastic member is It penetrates into the scalp and the electrode and scalp are electrically connected. Thereby, the electroencephalogram signal from the scalp can be detected by the electrode.

In the above invention, the connection means is provided with a seal member that brings the contact portion between the first contact and the second contact into a watertight state in a state where the cap is attached to the electrode device body. Is preferred.
In a state where the cap is attached to the electrode device body, the contact portion between the first contact and the second contact is brought into a watertight state by the operation of the seal member, so that moisture and dust enter the contact portion of the contact. It is possible to prevent the occurrence of inconvenience such as poor contact.

Moreover, in the said invention, the said connection means is fixed to any one of a cap or an electrode apparatus main body in the fitting part of the said cap and an electrode apparatus main body, and maintains a connection state with the frictional force between the other It is good also as providing the elastic support member to do.
When the cap is fitted to the electrode device main body, the elastic support member provided on either the cap or the electrode device main body is elastically deformed to generate a frictional force between the other and the connection state is maintained. As a result, the cap can be easily attached to and detached from the electrode device body.

Moreover, in the said invention, the said elastic support member is good also as consisting of an O-ring or Y packing.
By configuring the elastic support member with an O-ring or Y packing, the fitting portion between the cap and the electrode device main body can be closed in a sealed state over the entire circumference, and the cap can be kept connected to the electrode device main body by frictional force. It is possible to prevent dust and moisture from entering the connecting portion.

Furthermore, in the above invention, the connecting means may be composed of a female screw provided on either the cap or the electrode device main body and a male screw provided on the other and fastened to the female screw.
Further, in the above invention, the connection means is provided on either the cap or the electrode device main body, and is provided on the other side, the protrusion protruding in the direction orthogonal to the connection direction, and the protrusion in the connected state. It is good also as consisting of the recessed part to accommodate.
By fastening or loosening the female screw and the male screw, it is possible to easily attach and detach the cap to and from the electrode device main body and maintain a reliable fastening state. Moreover, it becomes possible to attach and detach easily and reliably by engagement between the protrusion and the recess.

  The present invention is also an electroencephalogram detection device comprising a plurality of electroencephalogram detection electrode devices that are arranged in contact with the scalp to detect electroencephalogram signals, wherein the electroencephalogram detection electrode device is a rod-shaped electrode device in which an electrode is arranged at the tip. A main body, a cap portion attached to the tip of the electrode device main body, and having an elastic member containing an electrolytic solution arranged in close contact so as to cover the electrode, and the cap portion are detachably connected to the electrode device main body And an electroencephalogram detection device in which the plurality of cap portions are integrally connected by a connecting portion.

  According to the present invention, a plurality of cap devices integrally connected by the connecting portion are put on the tips of the plurality of electrode device main bodies provided in the electroencephalogram detection device, so that the plurality of electroencephalogram detection electrode devices are integrated. Can be configured. Since the arrangement of the electroencephalogram detection electrode device with a cap is fixed to some extent, by integrating a plurality of cap portions with a connecting portion, the number of components can be reduced and management can be facilitated.

  The present invention is also an electroencephalogram detection device comprising a plurality of electroencephalogram detection electrode devices that are arranged in contact with the scalp to detect electroencephalogram signals, wherein the electroencephalogram detection electrode device has a rod-like shape in which a first contact is arranged at the tip. Electrode device main body, a cap portion that is attached so as to cover the tip of the electrode device main body, and has a second contact that is brought into contact with the first contact, and the cap portion is attached to and detached from the electrode device main body Connecting means for enabling connection, wherein the cap portion includes an electrode connected to the second contact point, and an elastic member including an electrolyte disposed in close contact so as to cover the electrode, Provided is an electroencephalogram detection device in which a plurality of cap portions are integrally connected by a connecting portion.

  According to the present invention, a plurality of cap devices integrally connected by the connecting portion are put on the tips of the plurality of electrode device main bodies provided in the electroencephalogram detection device, so that the plurality of electroencephalogram detection electrode devices are integrated. Can be configured. Since the arrangement of the electroencephalogram detection electrode device is fixed to some extent, by integrating a plurality of cap portions with a connecting portion, the number of components can be reduced and management can be facilitated.

In the said invention, it is preferable that the said connection part consists of flexible materials.
By using a flexible material for the connecting portion, the connecting portion is deformed in accordance with the positions of all the electrode device main bodies of the plurality of electrode devices for detecting electroencephalograms adjusted to the shape of the head of the subject. To cover the cap.

  Further, the present invention is a cap that is removably attached to a cylindrical EEG detection electrode having an electrode portion at the tip so as to cover the electrode portion, and is attached to the EEG detection electrode, An elastic member containing an electrolyte placed in close contact with the electrode part; a fitting cylinder part that supports the elastic member and is fitted to the outer peripheral surface of the electroencephalogram detection electrode; and an inner part of the fitting cylinder part Provided is a cap provided with a connecting means provided on a peripheral surface and maintaining the fitting tube portion attached to the electroencephalogram detection electrode.

  According to the present invention, the elastic member containing the electrolytic solution supported by the fitting cylinder part can be disposed in close contact with the electrode part by fitting the fitting cylinder part to the cylindrical electroencephalogram detection electrode. . At this time, the fitting cylinder part is maintained in the attached state to the electroencephalogram detection electrode by the connecting means provided on the inner peripheral surface of the fitting cylinder part. Accordingly, it can be easily attached to the electroencephalogram detection electrode at the time of use, and a reliable attachment state can be maintained, and after use, it can be easily detached from the electroencephalogram detection electrode and exchanged.

  The present invention also provides a cap that is detachably attached to a cylindrical electroencephalogram detection electrode body having a first contact at the tip so as to cover the first contact, and is attached to the electroencephalogram detection electrode body. A second contact that is brought into contact with the first contact in an attached state; an electrode portion that is connected to the second contact; and an elastic member that contains an electrolyte solution that is closely attached to the electrode portion. A fitting tube portion that supports the elastic member, the electrode portion, and the second contact point, and is fitted to the outer peripheral surface of the electroencephalogram detection electrode body, and is provided on the inner peripheral surface of the fitting tube portion, There is provided a cap comprising connecting means for maintaining a fitting tube portion attached to the electroencephalogram detection electrode body.

  According to the present invention, the second contact point supported by the fitting tube part is changed to the first contact point of the electroencephalogram detection electrode body by fitting the fitting tube part to the cylindrical brain wave detection electrode body. Can be contacted. Since the electrode part is connected to an elastic member containing an electrolytic solution to the second contact, the elastic member containing the electrolytic solution placed in close contact with the electrode part can be easily electrically connected to the first contact. Can be connected to. At this time, the fitting cylinder part is maintained in the attached state to the electroencephalogram detection electrode body by the connecting means provided on the inner peripheral surface of the fitting cylinder part. As a result, it can be easily attached to the electroencephalogram detection electrode body at the time of use, maintains a reliable attachment state, and can be easily removed and replaced after use from the electroencephalogram detection electrode body. it can.

In the above invention, the connection means is provided with a seal member that brings the contact portion between the first contact and the second contact into a watertight state in a state of being attached to the electroencephalogram detection electrode body. preferable.
Moreover, in the said invention, the said connection means is good also as providing the elastic support member fixed to the fitting cylinder part, and the frictional contact between the outer peripheral surfaces of the electroencephalogram detection electrode main body.
Furthermore, in the said invention, the said elastic support member is good also as consisting of an O-ring or Y packing.

Moreover, in the said invention, the said connection means is good also as having an internal thread fastened by the external thread provided in the outer peripheral surface of the said electroencephalogram detection electrode main body.
In the above invention, the connecting means may be formed of a concave portion engaged with a protrusion protruding radially outward on an outer peripheral surface of the electroencephalogram detection electrode body.

  Further, the present invention is a cap that is detachably attached to an electroencephalogram detection device comprising a plurality of cylindrical electroencephalogram detection electrodes each having an electrode portion at a tip so as to cover the electrode portion, An elastic member containing an electrolytic solution closely attached to the electrode portion in a state of being attached to the electrode, and a fitting tube portion that supports the elastic member and is fitted to the outer peripheral surface of the electroencephalogram detection electrode; A cap provided on an inner peripheral surface of the fitting tube portion, the connecting means for maintaining the fitting tube portion attached to the electroencephalogram detection electrode, and a connecting portion for connecting the fitting tube portions to each other. I will provide a.

  According to the present invention, an electroencephalogram detection device can be configured by covering a plurality of fitting tube portions integrally connected by a connection portion on the tips of a plurality of electroencephalogram detection electrodes. Since the arrangement of the electroencephalogram detection electrodes is fixed to some extent, a plurality of fitting tube portions can be integrally formed by a connecting portion, and by integrating, the number of parts is reduced and management is facilitated Can do.

  Further, the present invention is a cap that is detachably attached to a plurality of cylindrical electroencephalogram detection electrode bodies having a first contact at the tip so as to cover the first contact, and the electroencephalogram detection electrode Elasticity including a second contact brought into contact with the first contact, an electrode connected to the second contact, and an electrolyte placed in close contact with the electrode while attached to the main body A member, a fitting cylindrical portion that supports the elastic member, the electrode portion, and the second contact point, and is fitted to the outer circumferential surface of the electroencephalogram detection electrode body; and an inner circumferential surface of the fitting cylindrical portion. A cap is provided that includes connection means for maintaining the fitting tube portion attached to the electrode body for detecting an electroencephalogram, and a connecting portion for connecting the fitting tube portions.

  According to the present invention, a plurality of electroencephalogram detection devices can be configured by covering a plurality of fitting tube portions integrally connected by a connection portion on the tips of a plurality of electroencephalogram detection electrode bodies. Since the arrangement of the electroencephalogram detection electrode body is fixed to some extent, a plurality of fitting tube portions can be integrally formed by a connecting portion, and the integration reduces the number of parts and facilitates management. be able to.

In the said invention, it is preferable that the said connection part consists of flexible materials.
Moreover, in the said invention, it is good also as the instruction | indication display which instruct | indicates an attachment direction being provided in the said connection part.
When the plurality of fitting tube portions are integrally formed, it is convenient that the direction is shown when covering the plurality of electroencephalogram detection electrode bodies. That is, since the predetermined interval between the electroencephalogram detection electrode bodies is not uniform, the attaching operation can be facilitated by instructing the attaching direction by an instruction display.

Moreover, this invention provides the package provided with the said cap and the packaging member which accommodates this cap in an airtight state.
According to the present invention, by storing the cap in an airtight state by the packaging member, it is possible to prevent the electrolyte solution impregnated in the elastic member from being volatilized and to be provided in a state where it can be used immediately.

In the said invention, it is preferable to further provide the cover member which coat | covers the elastic member surface and the fitting cylinder part inner surface in the said cap.
By doing in this way, by accommodating in the packaging member in the state which covered the elastic member surface and the fitting cylinder part inside with the cover, electrolyte solution spills in a packaging member from an elastic member, or the spilled electrolyte solution Generation | occurrence | production of the problem which approachs into a fitting cylinder part can be prevented beforehand, and the elastic member surface and the inside of a fitting cylinder part can be protected.

Moreover, in the said invention, it is good also as the humidity sensor visible from the outside being arrange | positioned inside the said packaging member.
By doing in this way, the humidity inside a packaging member can be displayed by the action | operation of a humidity sensor. If the electrolyte of the elastic member dries, the brain wave signal cannot be accurately detected even if the cap is used. It is possible to prevent waste of work and waste of inspection work.

Moreover, in the said invention, the said packaging member is good also as accommodating the some cap.
By housing a plurality of caps used at the same time in the same packaging member, the number of packaging members can be reduced to reduce costs, and humidity management is facilitated.

Moreover, in the said invention, it is preferable that the said several cap is accommodated in the packaging member corresponding to the arrangement | positioning at the time of an electroencephalogram detection.
Since multiple electrodes are used at the same time for EEG detection, storing multiple caps that are used at the same time in association with the arrangement at the time of EEG detection makes it easier to reuse the cap due to forgetting to replace the cap. , Can prevent forgetting.

Furthermore, in the said invention, it is preferable that the same identification code is attached | subjected to the cap and the packaging member.
By attaching the same identification code to the caps used at the same time, it is possible to prevent forgetting to replace them.

  According to the present invention, it is possible to provide an electrode device for detecting an electroencephalogram, an electroencephalogram inspection device, a cap, and a package that can save the labor of cleaning for each inspection, perform an inspection hygienically, and improve usability.

An electroencephalogram inspection apparatus 1, an electroencephalogram detection electrode apparatus 2 and a cap 3 according to a first embodiment of the present invention will be described below with reference to FIGS.
As shown in FIG. 1, the electroencephalogram inspection apparatus 1 according to the present embodiment includes a plurality of electroencephalogram detection electrode devices 2 arranged in contact with the scalp B of a subject A. Each of the electroencephalogram detection electrode devices 2 is fixed to a cap-like or helmet-like holding member 4 that covers the head of the subject A.

As shown in FIG. 2, the electroencephalogram detection electrode device 2 includes an electrode device body 5, an electrode 6 exposed at the tip of the electrode device body 5, and an electrode at the tip of the electrode device body 5. 6 is provided with a cap 3 that covers the cover 6 and a connecting means 7 that detachably attaches the cap 3 to the electrode device body 5.
The electrode device main body 5 is formed in a substantially cylindrical shape, and is fixed in a state of being fitted into a through hole 4 a provided in the holding member 4.

The electrode 6 is a substantially disk-shaped plate, and is fixed to the tip surface of the electrode device body 5. A cable 8 is connected to the electrode 6 via the inside of the electrode device body 5. The electrode 6 is made of gold or plated with gold.
The cable 8 is connected to an electroencephalograph (not shown), and the brain function state is analyzed based on the detected electroencephalogram signal.

  As shown in FIG. 3, the cap 3 includes a substantially cylindrical cylindrical portion 9 that covers the tip of the electrode device body 5, and an elastic member 10 such as sponge or nonwoven fabric supported at one end thereof. It is composed of The elastic member 10 has a shape such that when the cap 3 is put on the electrode device main body 5, the elastic member 10 is in close contact with the entire surface of the electrode 6, that is, the area where the contact surface with the electrode 6 is larger than the area of the electrode 6. And is in close contact with the entire surface of the electrode 6 so as to reduce the contact resistance at the interface with the electrode as much as possible. The elastic member 10 is impregnated with an electrolytic solution 11 made of physiological saline or a mixed solution of physiological saline and alcohol.

  The connecting means 7 is constituted by an elastic elastic support member (hereinafter also referred to as an elastic support member 7) such as an O-ring or a Y packing. The elastic support member 7 is, for example, disposed on the outer peripheral surface of the electrode device body 5 over the entire circumference. When the cap 3 is put on the electrode device main body 5, the elastic support member 7 on the outer peripheral surface of the electrode device main body 5 generates a frictional force with the inner surface of the cap 3, and the cap 3 is held attached to the electrode device main body 5. Can be done.

  According to the electroencephalogram inspection apparatus 1 according to the present embodiment configured as described above, the electroencephalogram detection electrode apparatus 2 is placed on the electrode apparatus main body 5 fixed to the holding member 4 and the tip of the electrode apparatus main body 5. Since it is comprised from the cap 3, the same electroencephalogram test | inspection apparatus 1 can be used hygienically by several to-be-inspected A only by replacing the cap 3. FIG. In addition, since the connection between the cap 3 and the electrode device main body 5 is constituted by the elastic support member 7 that holds the cap 3 and the electrode device main body 5 in the attached state by frictional force, the cap 3 can be easily attached to and detached from the electrode device main body 5. There is an advantage that the replacement work does not take time. Further, since the electrode is made of gold or gold plating, the conductivity is good and the occurrence of rust due to the electrolyte can be prevented.

  Further, since the space between the electrode device body 5 and the cap 3 is sealed by the elastic support member 7, there is no possibility that dust or the like enters between the electrode 6 and the elastic member 10. Further, since the elastic member 10 is brought into close contact with the entire electrode 6 simply by covering the electrode device body 5 with the cap 3, the contact resistance can be reduced and an electroencephalogram signal can be detected efficiently.

Further, when the cap 3 is attached to the electrode device main body 5, the elastic member 10 is disposed at the tip of the electrode device main body 5 that is brought into contact with the scalp B of the subject A, so that the elastic member 10 is elastically deformed. Thus, a sufficient contact area with the scalp B can be ensured. When the elastic member 10 is elastically deformed, the electrolyte solution 11 impregnated in the elastic member 10 oozes out and permeates the scalp B, thereby achieving a good conduction state between the electrode 6 and the scalp B. it can.
As a result, the pasteless method is adopted to facilitate the mounting of the electroencephalogram inspection apparatus, the burden on the subject A can be reduced, and stable electroencephalogram signal detection can be performed without using a paste. There is an advantage that you can.

  Further, the cap 3 that is separated from the electrode device body 5 can be made disposable (disposable parts) that can be replaced each time it is used, so that it is not necessary to clean the holding member 4 and the electrode device body 5 each time it is used. The labor and cost required for management can be reduced.

  Although the elastic support member 7 is fixed to the outer peripheral surface of the electrode device body 5, it may be fixed to the inner surface of the cap 3 instead. Although the connecting means is constituted by the elastic support member 7 over the entire circumference, it may be constituted by an elastic body such as rubber partially disposed in the circumferential direction instead.

  In the present embodiment, the elastic support member 7 that maintains the cap 3 and the electrode device body 5 in a connected state by frictional force is employed as the connecting means. Instead, as shown in FIG. The protrusion 12 may be provided in the shape of a bowl on the outer peripheral surface of the electrode device body 5, and the recess 13 for engaging the protrusion 12 may be provided on the inner surface of the cap 3. By doing in this way, a connection state can be maintained more reliably. For example, when the electroencephalogram inspection apparatus 1 is attached to the head of the subject A, the head of the subject A may be scraped off by the electroencephalogram detection electrode device 2. The connection state of the cap 3 to can be maintained.

Needless to say, a recess may be provided on the outer peripheral surface of the electrode device body 5 and a protrusion may be provided on the inner surface of the cap 3.
Further, instead of engaging the protrusion 12 and the recess 13, the electrode device main body 5 and the cap 3 may be provided with a male screw and a female screw that can be fastened to each other so as to be detachable.

Next, an electroencephalogram detection electrode device 20 and a cap 21 according to a second embodiment of the present invention will be described below with reference to FIG.
The electroencephalogram inspection apparatus according to the present embodiment differs from the electroencephalogram inspection apparatus 1 according to the first embodiment in an electroencephalogram detection electrode device 20 and a cap 21. In the description of the present embodiment, the same reference numerals are assigned to portions common to the electroencephalogram inspection apparatus 1, the electroencephalogram detection electrode apparatus 2 and the cap 3 according to the first embodiment described above, and the description thereof is omitted.

In the electroencephalogram detection electrode device 20 according to the present embodiment, as shown in FIG. 5, the cap 21 is connected to the disc-shaped electrode 6, the elastic member 10 disposed in close contact with the electrode 6, and the electrode 6. A wiring 22 and a connecting portion 24 for connecting to the electrode device main body 23 are provided.
The electrode 6 and the elastic member 10 are the same as the electrode 6 and the elastic member 10 in the first embodiment. The connecting portion 24 is fitted with a substantially cylindrical fitting portion 25, a protrusion 26 provided on the outer peripheral surface of the fitting portion 25, and a sealing member 27 such as an O-ring provided on the outer peripheral surface. A contact point (second contact point) 28 formed by exposing one end of the wiring 22 is provided on the distal end surface of the portion 25.

  The electrode 6 and the elastic member 10 are arranged in close contact with each other and are surrounded by the peripheral wall 29 so that the interface between the electrode 6 and the elastic member 10 with the electrode 6 is not exposed to the outside. ing.

  The electrode device body 23 has a fitting recess 30 for fitting the fitting portion 25 of the cap 21, and a recess 31 provided on the inner peripheral surface of the fitting recess 30 for engaging the protrusion 26. A contact (first contact) 32 is provided at one end of the cable 8 at a position corresponding to the contact 28 of the cap 21.

  According to the electroencephalogram detection electrode device 20 according to the present embodiment configured as described above, the fitting portion 25 of the cap 21 is fitted into the fitting recess 30 of the electrode device main body 23, and the outer peripheral surface of the fitting portion 25 is The cap 21 can be kept attached to the electrode device body 23 simply by engaging the protrusion 26 with the recess 31 on the inner peripheral surface of the fitting recess 30. At this time, the first contact 28 and the second contact 32 are brought into contact with each other, and the cable 8 and the electrode 6 are brought into conduction. That is, the electroencephalogram signal obtained by the electroencephalogram detection performed by bringing the elastic member 10 into contact with the scalp B of the subject A and infiltrating the electrolytic solution 11 into the scalp B is the wiring 22, first and second contacts 32, 28 and the cable 8 are sent to an electroencephalograph (not shown).

  Further, the seal member 27 provided in the fitting portion 25 is crushed between the inner peripheral surface of the fitting recess 30 and seals the fitting surface between the fitting portion 25 and the fitting recess 30 over the entire circumference. Thereby, the contact part of the 1st contact 28 and the 2nd contact 32 is distribute | arranged with respect to the exterior, and the penetration | invasion of dust and the electrolyte solution 11 is prevented.

  As described above, according to the electroencephalogram detection electrode device 20 according to the present embodiment, the cap 21 provided with the electrode 6 is attached to be replaceable. The same effect as the first embodiment that the cost can be reduced is achieved. Further, unlike the first embodiment, since it is not necessary to expose the electrode 6, it is possible to prevent dust and the like from entering between the electrode 6 and the elastic member 10. In addition, since the contact portion between the first contact 32 and the second contact 28 is protected in a sealed state by the seal member 27, it is possible to prevent intrusion of dust, the electrolyte solution 11 and the like and generate a good conduction state. it can.

  Note that the protrusion 26, the recess 31, and the seal member 27 may be provided in any of the fitting portion 25 and the fitting recess 30. Also, the cap 21 is provided with a cylindrical fitting portion 25 and the electrode device body 23 is provided with a fitting recess 30. Instead, as shown in FIG. Needless to say, the electrode device body 23 may be provided with the fitting portion 34.

Next, an electroencephalogram inspection apparatus 40, an electroencephalogram detection electrode apparatus 41, and a cap 42 according to a third embodiment of the present invention will be described below with reference to FIGS.
In the description of the present embodiment, the same reference numerals are assigned to portions common to the electroencephalogram inspection apparatus 1, the electroencephalogram detection electrode devices 2, 20 and the caps 3, 21 according to the above-described embodiments, and the description thereof is omitted.

The electroencephalogram inspection apparatus 40 and the electroencephalogram detection electrode apparatus 41 according to the present embodiment are different from the first and second embodiments in the structure of the cap 42.
As shown in FIGS. 7 and 8, the cap 41 in the present embodiment includes a plurality of cap portions 43 that are placed on the plurality of electrode device main bodies 5 fixed to the holding member 4, and connects the cap portions 43. A connecting member 44 is provided. In the present embodiment, the electrode device main body 5 and these cap portions 43 have substantially the same structure as the electrode device main body 5 and the cap 3 in the first embodiment shown in FIGS. 2 and 3.

That is, the cap portion 43 of the cap 41 according to the present embodiment includes a cylindrical portion 45 that covers the electrode 6 provided at the tip of each electrode device body 5, and the elastic member 10 supported by the tip of the cylindrical portion 45. It consists of and. The connecting member 44 is a sheet-like member made of a flexible and stretchable material such as silicone rubber, and connects a plurality of cap portions 43.
Further, as shown in FIG. 8, the connecting member 44 is provided with a mark (instruction display) 46 indicating its mounting direction.

  According to the electroencephalogram inspection device 40 according to the present embodiment configured as described above, the connecting members 44 are bent and expanded and contracted at all the distal end portions of the plurality of electrode device main bodies 5 fixed to the holding member 4. As shown in FIG. 7, the cap unit 43 is attached so as to cover the electrode 6 at the tip of the electrode device body 5. At this time, using the mark 46 provided on the connecting member 44 as a mark, for example, the cap 42 is mounted so that the mark 46 is arranged at the front center portion of the holding member 4. Thereby, the cap 42 can be collectively attached to the plurality of electrode device main bodies 5.

According to the electroencephalogram inspection apparatus 40 according to the present embodiment, since the cap portions 43 to be mounted on the plurality of electrode device main bodies 5 are integrated by the connecting member 44, the number of disposable parts can be reduced and management is easy. It is. In addition, there is an effect that it is possible to save the trouble of mounting disposable parts.
In the description of the present embodiment, the same structure as that of the cap 3 in the first embodiment is adopted as the structure of the cap portion 43. Instead of this, the electrode device main body and the cap portion are shown in FIGS. The structure shown in FIG. 6 may be adopted.

Next, the cap package 50 according to the first embodiment of the present invention will be described below with reference to FIG.
The cap package 50 according to the present embodiment packages the cap 3 according to the first embodiment, the cover members 51 and 52 attached to the cap 3, and the cap 3 attached with the cover members 51 and 52 in a sealed state. It is comprised from the packaging member 53. FIG. The elastic member 10 of the cap 3 is impregnated with the electrolytic solution 11.

  The cover members 51 and 52 have substantially the same shape as the protective film 51 that covers the elastic member 10 of the cap 3 in an airtight state and the tip of the electrode device body 5, and are fitted inside the cylindrical portion 9 of the cap 3. And a protective component 52 to be joined. The protective component 52 is fitted inside the cap 3 so as to cover the elastic member 10 exposed inside the cap 3. The elastic member 10 covers the inner and outer exposed portions by the protective film 51 and the protective component 52, thereby suppressing evaporation of the electrolyte solution 11 impregnated in the elastic member 10 and preventing leakage to the outside. Yes. And by removing the protective film 51 and the protective component 52 from the cap 3, it can be attached to the front-end | tip part of the electrode apparatus main body 5 as it is, and can be used for an electroencephalogram examination.

  The wrapping member 53 is a transparent sachet made of, for example, polyethylene that can seal the cap 3 to which the cover members 51 and 52 are attached in an airtight state, and includes a humidity sensor 54 on the inner surface thereof. The humidity sensor 54 changes its color according to humidity, for example, and is attached to the inner surface so that the change in the color can be seen from the outside of the packaging member 53.

  According to the cap package 50 configured in this manner, since the humidity sensor 54 is disposed inside the packaging member 53, the packaging member 53 determines whether or not the cap 3 stored in the packaging member 53 can be used. Can be confirmed from outside. In use, the packaging member 53 is broken, the cap 3 is taken out from the inside, the protective component 52 is removed from the cap 3, and the elastic member 10 on the inner side of the cap 3 is exposed, so that it can be attached to the electrode device body 5. become. And after attaching to the electrode apparatus main body 5, by peeling off the protective film 51, it can be used for an electroencephalogram as it is. By doing in this way, since the elastic member 10 is covered with the protective film 51 just before use, evaporation of the electrolyte solution 11 etc. can be suppressed.

  Therefore, according to the cap package 50 according to the present embodiment, the electrolytic solution 11 impregnated in the elastic member 10 is dried when the cap 3 that can be attached to and detached from the tip of the electrode device body 5 is provided as a disposable part. Instead, it can be provided in a usable state simply by being mounted on the electrode device body 5 as it is.

  The cap sealed in the packaging member 53 is not limited to the cap 3 according to the first embodiment, and the caps 21 and 42 shown in any of FIGS. 5 to 8 are sealed. Also good. FIG. 10 shows a state in which the protective film 55 and the cover member 56 when the cap package 50 having the cap 21 shown in FIG. Since the cap 21 in FIG. 10 has the electrode 6 and the contact 28 connected to the electrode 6, the seal member 27 disposed on the outer peripheral surface of the fitting portion 25 seals the inner surface of the fitting hole 56 a of the protective component 56. By stopping, the electrolyte solution 11 can be prevented from entering the contact 28 even if the electrolyte solution 11 leaks.

  Moreover, Fig.11 (a) has shown the example of the cap package 58 which has the packaging member 57 which can accommodate the cap 3 which concerns on 1st Embodiment in multiple numbers. The cap 3 is accommodated by the number used simultaneously. In FIG. 11, the accommodating portion of each cap 3 in the packaging member 57 is provided corresponding to the arrangement of the electroencephalogram detection electrode device 2 in the holding member 4. Further, the same identification code 59, for example, a serial number is printed on the outer surface of the packaging member 57 and the outer peripheral surface of the cap 3 as shown in FIG.

  With this configuration, the number of caps 3 necessary for one-time EEG detection is stored in the same packaging member 57, so that the cap 3 remaining in the packaging member 57 is confirmed after the replacement operation. Thus, forgetting to replace can be prevented. Moreover, since it is accommodated corresponding to the arrangement of the electroencephalogram detection electrode device 2 in the holding member 4, it is possible to determine which cap 3 is not replaced during the replacement. Furthermore, since the caps 3 with different serial numbers 59 should not be used at the same time, by checking the serial number 59, it is possible to prevent the use of the caps 3 for a plurality of persons A to be inspected.

FIG. 12 shows a state in which the protective film 61 and the protective component 62 when the cap package 60 having the cap 42 according to the third embodiment shown in FIG. 7 is configured are mounted. A single protective film 61 and protective component 62 can be used for the plurality of cap portions 43, and the number of components can be reduced. The cap portion 43 may not have the electrode 6 as shown in FIG. 12, or may have the electrode 6 as shown in FIG. Reference numeral 63 in the drawing denotes a cable connected to the wiring 22 in the cap, which is drawn out through the cap portion 43 and the connecting member 44 and connected to the connector 64.
Further, as shown in FIG. 14, the packaging member 65 may be a box-shaped member that can accommodate the entire cap 42 with the cover members 61 and 62 shown in FIGS.

It is a schematic diagram which shows the state which mounted | wore the examinee's head with the electroencephalogram inspection apparatus which concerns on the 1st Embodiment of this invention. It is a longitudinal cross-sectional view which shows 1st Embodiment of the electrode apparatus for electroencephalogram detection used for the electroencephalogram inspection apparatus of FIG. It is a longitudinal cross-sectional view which shows the state which removed the cap from the electrode apparatus main body of the electrode apparatus for electroencephalogram detection of FIG. It is a partial longitudinal cross-sectional view which shows the modification of the cap of the electrode apparatus for electroencephalogram detection of FIG. It is a longitudinal cross-sectional view which shows 2nd Embodiment of the electrode apparatus for electroencephalogram detection used for the electroencephalogram inspection apparatus of FIG. It is a longitudinal cross-sectional view which shows the modification of the electrode apparatus for electroencephalogram detection of FIG. It is a longitudinal cross-sectional view which shows 3rd Embodiment of the electrode apparatus for electroencephalogram detection used for the electroencephalogram inspection apparatus of FIG. It is a top view which shows the cap with which the electrode apparatus for electroencephalogram detection of FIG. 7 is mounted | worn. It is a figure which shows the cap package which concerns on the 1st Embodiment of this invention. It is a longitudinal cross-sectional view which shows the case where the cap of the electrode apparatus for electroencephalogram detection shown in FIG. 5 is used as a cap accommodated inside. It is (a) perspective view and (b) side view of a cap which show an example of the packaging member which can accommodate a some cap. It is a longitudinal cross-sectional view which shows the case where the cap which does not have an electrode of the electrode apparatus for electroencephalogram detection shown by FIG. 7 is used as a cap accommodated inside. It is a longitudinal cross-sectional view which shows the case where the cap which has an electrode is used as a cap accommodated in an inside. It is a perspective view which shows the state which accommodated the cap of FIG. 12 in the packaging member.

Explanation of symbols

B scalp 1,40 electroencephalogram detection device 2,20,41 electroencephalogram detection electrode device 3,21,42 cap 5,23 electrode device body 6 electrode 7 elastic support member (connection means)
9,45 Cylindrical part (fitting cylinder part)
DESCRIPTION OF SYMBOLS 10 Elastic member 11 Electrolyte solution 12,26 Protrusion 13,31 Concave part 27 Seal member 28 Contact (2nd contact)
32 contacts (first contact)
43 Cap part 44 Connecting member (connecting part)
46 mark (indication display)
50, 58, 60 Cap package (package)
51, 55, 61 Protective film (cover member)
53, 57, 65 Packaging material 54 Humidity sensor 59 Serial number (identification code)

Claims (27)

An electrode device for detecting an electroencephalogram that is arranged in contact with the scalp and detects an electroencephalogram signal,
A rod-shaped electrode device body with an electrode disposed at the tip;
A cap having an elastic member attached to the tip of the electrode device main body and containing an electrolytic solution disposed in close contact so as to cover the electrode;
An electroencephalogram detection electrode device provided with connection means for detachably connecting the cap to the electrode device main body. An electrode device for detecting an electroencephalogram that is arranged in contact with the scalp and detects an electroencephalogram signal,
A rod-shaped electrode device body having a first contact disposed at the tip;
A cap attached to cover the tip of the electrode device body and having a second contact that is brought into contact with the first contact;
Connection means for detachably connecting the cap to the electrode device body is provided,
An electrode device for detecting an electroencephalogram, wherein the cap includes an electrode connected to the second contact and an elastic member containing an electrolytic solution disposed in close contact so as to cover the electrode.   The sealing member which makes the contact part of the said 1st contact and a 2nd contact a watertight state in the state in which the said cap was attached to the electrode apparatus main body in the said connection means is provided. Electrode device for electroencephalogram detection.   The connection means includes an elastic support member that is fixed to either the cap or the electrode device main body at a fitting portion between the cap and the electrode device main body, and maintains a connection state by a frictional force between the cap and the electrode device main body. The electroencephalogram detection electrode device according to any one of claims 1 to 3.   The electroencephalogram detection electrode device according to claim 4, wherein the elastic support member is made of an O-ring or a Y-packing.   The said connection means consists of the internal thread provided in either one of the said cap or the said electrode apparatus main body, and the external thread provided in the other and fastened to an internal thread. Electrode device for electroencephalogram detection.   The connection means includes a protrusion provided in one of the cap and the electrode device main body and protruding in a direction orthogonal to a connection direction, and a recess provided in the other and accommodating the protrusion in a connected state. The electroencephalogram detection electrode device according to any one of claims 1 to 3. An electroencephalogram detection device comprising a plurality of electroencephalogram detection electrode devices arranged in contact with the scalp to detect electroencephalogram signals,
The electroencephalogram detection electrode device has a rod-shaped electrode device main body with an electrode disposed at the tip, and an elastic member that is attached to the tip of the electrode device main body and contains an electrolyte solution that is closely attached to cover the electrode A cap portion, and connection means for detachably connecting the cap portion to the electrode device body,
An electroencephalogram detection device in which the plurality of cap portions are integrally connected by a connecting portion. An electroencephalogram detection device comprising a plurality of electroencephalogram detection electrode devices arranged in contact with the scalp to detect electroencephalogram signals,
The electrode device for detecting an electroencephalogram is attached to a rod-shaped electrode device main body having a first contact disposed at the tip, and covers the tip of the electrode device main body, and a second electrode contacted with the first contact A cap portion having a contact; and a connecting means for detachably connecting the cap portion to the electrode device body,
The cap portion includes an electrode connected to the second contact, and an elastic member including an electrolytic solution arranged in close contact so as to cover the electrode,
An electroencephalogram detection device in which the plurality of cap portions are integrally connected by a connecting portion.   The electroencephalogram detection apparatus according to claim 8 or 9, wherein the connecting portion is made of a flexible material. A cap that is detachably attached to a cylindrical electroencephalogram detection electrode having an electrode part at the tip so as to cover the electrode part,
In an attached state to the electroencephalogram detection electrode, an elastic member including an electrolytic solution closely attached to the electrode part;
A fitting tube portion that supports the elastic member and is fitted to the outer peripheral surface of the electroencephalogram detection electrode;
A cap provided on an inner peripheral surface of the fitting tube portion, and connecting means for maintaining the fitting tube portion attached to the electroencephalogram detection electrode. A cap that is detachably attached to a cylindrical electroencephalogram detection electrode body having a first contact at the tip so as to cover the first contact,
A second contact that is brought into contact with the first contact in a state of being attached to the electroencephalogram detection electrode body;
An electrode portion connected to the second contact;
An elastic member containing an electrolytic solution placed in close contact with the electrode part;
A fitting tube portion that supports the elastic member, the electrode portion, and the second contact point, and is fitted to the outer peripheral surface of the electroencephalogram detection electrode body;
A cap provided on the inner peripheral surface of the fitting tube portion, and connecting means for maintaining the fitting tube portion attached to the electroencephalogram detection electrode body.   The cap according to claim 12, wherein the connecting means is provided with a seal member that brings a contact portion between the first contact and the second contact into a watertight state when attached to the electroencephalogram detection electrode body. .   The cap according to claim 12 or 13, wherein the connecting means includes an elastic support member that is fixed to the fitting cylinder and is brought into frictional contact with the outer peripheral surface of the electroencephalogram detection electrode body.   The cap according to claim 14, wherein the elastic support member is formed of an O-ring or a Y packing.   The cap according to claim 12 or 13, wherein the connection means has a female screw fastened to a male screw provided on an outer peripheral surface of the electroencephalogram detection electrode body.   14. The cap according to claim 12 or 13, wherein the connecting means comprises a recess engaging with a protrusion protruding radially outward on an outer peripheral surface of the electroencephalogram detection electrode body. A cap that is detachably attached to an electroencephalogram detection device comprising a plurality of cylindrical electroencephalogram detection electrodes having an electrode portion at the tip so as to cover the electrode portion,
In an attached state to the electroencephalogram detection electrode, an elastic member including an electrolytic solution closely attached to the electrode part;
A fitting tube portion that supports the elastic member and is fitted to the outer peripheral surface of the electroencephalogram detection electrode;
A connecting means provided on the inner peripheral surface of the fitting tube portion, and maintaining the fitting tube portion attached to the electroencephalogram detection electrode;
A cap provided with a connecting portion that connects the fitting tube portions. A cap that is detachably attached to a plurality of cylindrical electroencephalogram detection electrode bodies each having a first contact at a tip so as to cover the first contact,
A second contact that is brought into contact with the first contact in a state of being attached to the electroencephalogram detection electrode body;
An electrode portion connected to the second contact;
An elastic member containing an electrolytic solution placed in close contact with the electrode part;
A fitting tube portion that supports the elastic member, the electrode portion, and the second contact point, and is fitted to the outer peripheral surface of the electroencephalogram detection electrode body;
A connecting means provided on an inner peripheral surface of the fitting tube portion, and maintaining the fitting tube portion in an attached state to the electroencephalogram detection electrode body;
A cap provided with the connection part which connects the said fitting cylinder parts.   The cap according to claim 18 or 19, wherein the connecting portion is made of a flexible material.   21. The cap according to any one of claims 18 to 20, wherein an instruction display for instructing a mounting direction is provided on the connecting portion. A cap according to any one of claims 11 to 21,
And a packaging member for accommodating the cap in an airtight state.   The package according to claim 22, further comprising a cover member that covers the surface of the elastic member and the inner surface of the fitting cylinder portion on the cap.   The package according to claim 22 or 23, wherein a humidity sensor visible from the outside is arranged inside the packaging member.   The package according to any one of claims 22 to 24, wherein the packaging member contains a plurality of caps.   26. The package according to claim 25, wherein the plurality of caps are accommodated in the packaging member in association with the arrangement at the time of detecting an electroencephalogram.   27. The package according to claim 25 or claim 26, wherein the same identification code is attached to the cap and the packaging member.

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