JPH0817771B2 - Impedance measurement electrode - Google Patents
Impedance measurement electrodeInfo
- Publication number
- JPH0817771B2 JPH0817771B2 JP3271695A JP27169591A JPH0817771B2 JP H0817771 B2 JPH0817771 B2 JP H0817771B2 JP 3271695 A JP3271695 A JP 3271695A JP 27169591 A JP27169591 A JP 27169591A JP H0817771 B2 JPH0817771 B2 JP H0817771B2
- Authority
- JP
- Japan
- Prior art keywords
- jelly
- electrode
- small diameter
- reservoir
- impedance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002847 impedance measurement Methods 0.000 title claims description 8
- 235000015110 jellies Nutrition 0.000 claims description 24
- 239000008274 jelly Substances 0.000 claims description 24
- 238000005259 measurement Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 description 4
- 230000000116 mitigating effect Effects 0.000 description 2
- 206010033372 Pain and discomfort Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000003727 cerebral blood flow Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、人体頭部の電気インピ
ーダンスの計測用電極に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode for measuring the electrical impedance of the human head.
【０００２】[0002]
【従来の技術】血液は人体の他の組織に比べて電気イン
ピーダンスが小さいため、人体の任意の部分における電
気インピーダンスを計測することにより、当該部分の血
流量を測定することができる。この原理に基づいて、人
体頭部における電気インピーダンスを計測すれば、脳血
流を測定することができる。そして一般に人体頭部にお
ける電気インピーダンスの計測を行う場合、４個を１組
として使用する貼付け型の湿式電極を、１個１個被測定
部位に貼付している。 一方、脳波計用電極としては、電
極内部に導電性液体、電解液体などの貯蔵部を内蔵した
もの、これら液体の含浸体を電極に被覆したもの、ある
いはこれらの液体をポンプやシリンジにより電極先端部
に移送するようにしたものなどが知られている。 本発明
のような生体のインピーダンス計測では、生体に電極を
接触させて電流を流し測定するが、脳波計では、生体に
おける膜電位に起因する活動電流の時間 的変化を測定す
るもので、検出部を含め装置全体が交流障害を完全に避
ける必要があるため、その電極は構造が比較的複雑なも
のである。 2. Description of the Related Art Since blood has a smaller electric impedance than other tissues of the human body, by measuring the electric impedance of an arbitrary portion of the human body, the blood flow amount of that portion can be measured . Based on the principle of this, lever to measure the electrical impedance of the human head, can be measured cerebral blood flow. And if generally to measure the electrical impedance of the human body head, Paste type wet electrode bonded to use four as a set, it is attached to one single measuring site. On the other hand, the electrodes for the electroencephalograph are
Built-in storage for conductive liquid, electrolytic liquid, etc. inside the electrode
There is an impregnated body of these liquids on the electrodes,
Alternatively, use a pump or syringe to pump these liquids into the electrode tip.
Known to be transferred to. In the impedance measurement of a living body as in the present invention , electrodes are attached to the living body.
It is measured by contacting it with an electric current.
Measurement of time- dependent changes in action current caused by membrane potential
The entire device, including the detector, completely avoids AC disturbances.
Therefore, the electrode has a relatively complicated structure.
It is.
【０００３】[0003]
【発明が解決しようとする課題】本発明の課題は、上述
のような事情に鑑み、構造が比較的簡単で先端部に導電
性ゼリーを安定的に保持させるのに適した人体頭部のイ
ンピーダンス計測用電極を提供することにある。 An object of the present invention is to solve the above-described above
In consideration of such circumstances, the structure is relatively simple and the tip is electrically conductive.
Suitable for keeping the sex jelly stable.
It is to provide an electrode for impedance measurement.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するた
め、本発明のインピーダンス計測用電極は、被測定者の
頭部に装着可能なヘルメット状の固定具に取り付け、人
体頭部の被測定部位に押し当てることにより電気的接続
を行うインピーダンス計測用電極であって、被測定部位
に押し当てる中心の小径部とこの小径部の基部で段付部
を形成して連続する大径部とを含み、この段付部におけ
る小径部の周囲にゼリー溜め窪みを設けたことを特徴と
するものである。 本発明のインピーダンス計測用電極に
おいては、大径部に、小径部の周囲に突出させて管状の
ゼリー溜め囲いを装着することりより、段付部における
小径部の周囲にゼリー溜め窪みを形成することができ
る。 In order to solve the above-mentioned problems, the impedance measuring electrode of the present invention has
Attach to a helmet-shaped fixture that can be worn on the head,
Electrical connection by pressing against the measured part of the head
Impedance measurement electrode that performs
The small diameter part at the center and the base part of this small diameter part
Including a large diameter part that is continuous and forms
It is characterized by having a jelly reservoir recess around the small diameter part
Is what you do. In the impedance measuring electrode of the present invention
In the case of the large diameter part, the tubular part is projected around the small diameter part.
By installing a jelly reservoir enclosure,
A jelly reservoir depression can be formed around the small diameter part.
It
【０００５】[0005]
【作用】 上記の構成を有する電極を固定具に摺動可能に
取り付け、適正な押圧力をもって、各電極の小径部先端
を人体頭部の被測定部位に押し当て、２個の電流供給電
極間に微弱電流を流し、２個の電圧測定電極の電位差を
検出して、被測定部位におけるインピーダンスを測定す
る。この際、小径部の周囲のゼリー溜め窪みにより、導
電性ゼリーが安定的に保持されており、電極接触抵抗が
小さく被測定部位と電極との間の電気的接続の確実性が
大きいので、流す電流をできるだけ微弱にしても、正確
にインピーダンスが測定できる 。 [Function] Sliding the electrode having the above structure on the fixture
With mounting and proper pressing force, the tip of the small diameter part of each electrode
2 against the measured part of the human head
A weak current is passed between the electrodes to reduce the potential difference between the two voltage measuring electrodes.
Detect and measure the impedance at the measured site
It At this time, the jelly reservoir depression around the small diameter part
Electrolytic jelly is held stably and the electrode contact resistance is
The reliability of the electrical connection between the measured part and the electrode is small.
Since it is large, it is accurate even if the flowing current is as weak as possible.
The impedance can be measured .
【０００６】[0006]
【実施例】以下に本発明の実施例を図面を参照しながら
詳述する。図１は本発明の電極の使用状態の説明図であ
る。図１に示すように、４個のインピーダンス計測用電
極（以下、単に電極という）１は、被測定者頭部５に装
着可能なヘルメット状の固定具４に、それぞれ直動軸受
２を介して軸方向に摺動可能に取り付けてあり、上端部
分に適正な重量のおもり３がついている。電極１は、そ
れぞれおもり３に作用する重力を推進力として、被測定
者頭部５の被測定部位に押し当てられる。電極１を被測
定者頭部５の被測定部位に押し当てるおもり３に代え
て、空気圧シリンダ、油圧シリンダ、ソレノイド、電動
機などのアクチュエータ又はばねなどを使用することも
可能である。 Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory diagram of a usage state of the electrode of the present invention. As shown in FIG. 1, four impedance measurement electrodes (hereinafter, simply referred to as electrodes) 1 are attached to a head 5 of a person to be measured.
The wear can helmet shaped fixture 4, Ri Oh mounted slidably in the axial direction via respective linear bearing 2, an upper end
A minute weight of proper weight is attached to each minute. Electrode 1, as the driving force of gravity acting on each weight 3, pressed against the measurement site of the measurement subject head 5. Electrode 1 is measured
Instead of the weight 3 that is pressed against the measured part of the fixed head 5
Pneumatic cylinder, hydraulic cylinder, solenoid, electric
It is also possible to use actuators such as machines or springs
It is possible.
【０００７】図２はゼリー溜め窪みがある本発明の電極
の一実施例の断面図である。電極１は横断面が円形であ
り、先端に人体頭部の被測定部位に押し当てる丸み１ａ
を有する中心の小径部１ｂと、この小径部１ｂの基部で
段付部１ｃを形成して連続する大径部（軸部）１ｄとを
含んでいる。このように、先端部分を軸部分より細くす
ることで毛髪の影響を軽減し、かつ、押圧力に対し座屈
等を生じることなく、安定的に押圧することが可能とな
る。しかも、被測定部位の皮膚に直接接する最先端部
に、わずかな円み１ａを持たせることで、電極１が頭部
に押し当てられることによる被測定者の痛みや不快感
を、緩和・軽減することができる。FIG. 2 is an electrode of the present invention having a jelly reservoir depression .
It is sectional drawing of one Example . The electrode 1 has a circular cross section
Rounded edge 1a that is pressed against the measured part of the human head at the tip
With a small diameter portion 1b at the center and a base portion of this small diameter portion 1b
A large diameter portion (shaft portion) 1d that forms a stepped portion 1c and is continuous
Contains. Thus, to reduce the effect of the hair by narrower than the shaft portion of the tip portion, and, without causing buckling against the pressing force, it is possible to stably press. Moreover, the cutting edge portion in direct contact with the skin of the measurement site, by providing a slight Marmi 1a, the pain and discomfort of the subject due to the electrode 1 is pressed against the head, mitigation and mitigation can do.
【０００８】また、電極接触抵抗を小さくして、流す電
流をできるだけ微弱にしても、正確にインピーダンスが
測定できるようにするため、上記電極１は湿式電極であ
り、小径部の先端部分やその周囲には導電性ゼリーを塗
布して使用するが、その導電性ゼリーを安定的に保持さ
せるため、段付部１ｃにおける小径部１ｂの周囲にはゼ
リー溜め窪み６を設けている。これにより、小径部の周
囲に塗布した導電性ゼリーの停溜性がよくなり、被測定
部位と電極１との間の電気的接続の確実性が確保され
る。 In addition, the contact resistance of the electrodes is reduced to reduce the current flow.
Even if the flow is as weak as possible, the impedance will be accurate.
In order to be able to measure, the electrode 1 is a wet electrode.
The tip of the small diameter part and its periphery are coated with conductive jelly.
Use it as a cloth, but keep its conductive jelly stable.
In order to allow the small diameter portion 1b in the stepped portion 1c,
Lee reservoir Me recess 6 is provided. As a result, the circumference of the small diameter part
The retention of the conductive jelly applied to the enclosure is improved and the measured
The reliability of the electrical connection between the site and the electrode 1 is ensured.
It
【０００９】図３は、本発明の電極の他の実施例を示す
もので、本実施例では、段付部１ｃの大径部１ｄ側に窪
みを直接穿つのではなく、大径部１ｄに、小径部１ｂの
周囲 に突出させて管状のゼリー溜め囲い７を装着するこ
とにより、ゼリー溜め窪み６を形成している。ゼリー溜
め囲い７は、大径部１ｄに対して適正に脱着できる内径
を有するビニール管等で別途製作することができる。 本
実施例は、窪みを形成する加工を要せず、ゼリー溜め窪
み６の深さを任意に設定でき、使用前後における電極の
洗浄が容易であるなどの利点がある。FIG. 3 shows another embodiment of the electrode of the present invention .
In the present embodiment, however, a recess is formed on the large diameter portion 1d side of the stepped portion 1c.
Rather than directly drilling only the large diameter portion 1d, the small diameter portion 1b
Attach the tubular jelly reservoir enclosure 7 so that it protrudes to the surroundings .
The jelly reservoir depression 6 is formed by. Jelly reservoir
The enclosure 7 is an inner diameter that can be properly attached to and detached from the large diameter portion 1d.
It can be manufactured separately by using a vinyl pipe or the like. Book
The embodiment does not require processing for forming the depression, and the jelly reservoir depression is used.
The depth of the groove 6 can be set arbitrarily, and the electrode before and after use
There are advantages such as easy cleaning .
【００１０】[0010]
【発明の効果】以上説明したように、本発明のインピー
ダンス計測用電極は、構造が比較的簡単で、先端部に導
電性ゼリーを直接塗布する際に好都合なゼリー溜め窪み
があるので、導電性ゼリーが安定的に保持される。した
がって、インピーダンス計測時における電極接触抵抗を
小さくし、被測定部位と電極との間の電気的接続の確実
性を高め、流す電流をできるだけ微弱にしても、正確に
インピーダンスが測定できる。 As described above, the impedance of the present invention is
The dance measurement electrode has a relatively simple structure and is connected to the tip.
Jelly reservoir well suited for direct application of electroconductive jelly
Therefore, the conductive jelly is stably held. did
Therefore, the electrode contact resistance during impedance measurement
Minimize and ensure electrical connection between the measured area and the electrode
Accurately, even if the flowing current is as weak as possible
Impedance can be measured.
【図１】本発明の電極の使用状態の説明図である。FIG. 1 is an explanatory view of a usage state of an electrode of the present invention .
【図２】ゼリー溜め窪みがある本発明の電極の一実施例
の断面図である。FIG. 2 is a cross-sectional view of one embodiment of an electrode of the present invention having a jelly reservoir depression .
【図３】ゼリー溜め窪みがある本発明の電極の他の実施
例の断面図である。FIG. 3 Another implementation of the electrode of the present invention having a jelly reservoir depression .
It is sectional drawing of an example .
１ 電極１ｂ 小径部 １ｃ 段付部 １ｄ 大径部 ６ ゼリー溜め窪み ７ ゼリー溜め囲い 1 electrode 1b small diameter portion 1c stepped portion 1d large diameter portion 6 jelly reservoir depression 7 jelly reservoir enclosure
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ａ６１Ｂ 5/04 ３００ Ｄ (72)発明者 児玉 廣之 茨城県つくば市東１−１−４ 製品科学研 究所内 (56)参考文献 特開 昭61−249436（ＪＰ，Ａ) 特開 昭60−21741（ＪＰ，Ａ) 特開 昭52−81981（ＪＰ，Ａ) 実開 平２−94507（ＪＰ，Ｕ) 実開 平１−159814（ＪＰ，Ｕ) 実開 平１−98605（ＪＰ，Ｕ)─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical indication location A61B 5/04 300 D (72) Inventor Hiroyuki Kodama 1-1-4 East, Tsukuba City, Ibaraki Prefecture (56) References JP-A-61-249436 (JP, A) JP-A-60-21741 (JP, A) JP-A-52-81981 (JP, A) Jitsukaihei 2-94507 (JP, U) Actual flat 1-159814 (JP, U) Actual flat 1-198605 (JP, U)
Claims (2)
状の固定具に取り付け、人体頭部の被測定部位に押し当
てることにより電気的接続を行うインピーダンス計測用
電極であって、被測定部位に押し当てる中心の小径部と
この小径部の基部で段付部を形成して連続する大径部と
を含み、この段付部における小径部の周囲にゼリー溜め
窪みを設けたことを特徴とするインピーダンス計測用電
極。 1. A helmet that can be worn on the head of a person to be measured.
Attach it to the fixed fixture and press it against the measured area of the human head.
Impedance measurement for electrical connection
It is an electrode and has a small diameter part at the center that is pressed against the measurement site.
A stepped portion is formed by the base portion of this small diameter portion and a continuous large diameter portion
Including the jelly reservoir around the small diameter part in this stepped part
Impedance measurement battery characterized by having a recess
very.
状のゼリー溜め囲いを装着することりより、段付部にお
ける小径部の周囲にゼリー溜め窪みを形成したことを特
徴とする請求項１に記載のインピーダンス計測用電極 。 2. A pipe having a large diameter portion, which projects around the small diameter portion.
By attaching a jelly reservoir enclosure in the shape of
A special jelly reservoir depression was formed around the small diameter part.
The impedance measuring electrode according to claim 1, which is used as a characteristic .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3271695A JPH0817771B2 (en) | 1991-05-31 | 1991-05-31 | Impedance measurement electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3271695A JPH0817771B2 (en) | 1991-05-31 | 1991-05-31 | Impedance measurement electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0678888A JPH0678888A (en) | 1994-03-22 |
| JPH0817771B2 true JPH0817771B2 (en) | 1996-02-28 |
Family
ID=17503558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3271695A Expired - Lifetime JPH0817771B2 (en) | 1991-05-31 | 1991-05-31 | Impedance measurement electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0817771B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2705624B2 (en) * | 1995-03-31 | 1998-01-28 | 日本電気株式会社 | Electrode position measurement device |
| US8187197B2 (en) | 2002-01-15 | 2012-05-29 | Orsan Medical Technologies Ltd. | Cerebral perfusion monitor |
| US8211031B2 (en) | 2002-01-15 | 2012-07-03 | Orsan Medical Technologies Ltd. | Non-invasive intracranial monitor |
| US7998080B2 (en) | 2002-01-15 | 2011-08-16 | Orsan Medical Technologies Ltd. | Method for monitoring blood flow to brain |
| JP4904263B2 (en) * | 2004-07-15 | 2012-03-28 | オーサン メディカル テクノロジーズ リミテッド | Brain perfusion monitoring device |
| US9345411B2 (en) | 2011-02-09 | 2016-05-24 | Orsan Medical Technologies, Ltd. | Devices and methods for monitoring cerebral hemodynamic conditions |
| CN106175756A (en) * | 2016-10-08 | 2016-12-07 | 科斗（苏州）脑机科技有限公司 | A kind of brain electrode of anti-hair interference |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5281981A (en) * | 1975-12-28 | 1977-07-08 | Tsuyoshi Kajiyama | Electrode device for electroencephalogram |
| JPS6021741A (en) * | 1983-07-15 | 1985-02-04 | 永島医科器械株式会社 | Brain wave potential detecting method and apparatus |
| US4709702A (en) * | 1985-04-25 | 1987-12-01 | Westinghouse Electric Corp. | Electroencephalographic cap |
| JPH0453764Y2 (en) * | 1987-12-22 | 1992-12-17 | ||
| JPH058969Y2 (en) * | 1988-04-28 | 1993-03-05 | ||
| JPH0294507U (en) * | 1988-07-12 | 1990-07-27 |
-
1991
- 1991-05-31 JP JP3271695A patent/JPH0817771B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0678888A (en) | 1994-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |