JPH0347090B2 - - Google Patents
Info
- Publication number
- JPH0347090B2 JPH0347090B2 JP61093269A JP9326986A JPH0347090B2 JP H0347090 B2 JPH0347090 B2 JP H0347090B2 JP 61093269 A JP61093269 A JP 61093269A JP 9326986 A JP9326986 A JP 9326986A JP H0347090 B2 JPH0347090 B2 JP H0347090B2
- Authority
- JP
- Japan
- Prior art keywords
- input
- connector
- bioelectrode
- present
- electronic circuit
- 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
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、生体の活動電位の変化を皮膚面に接
着した電極により検出して記録し、診断の用に供
するための生体電気信号測定装置、例えば脳波
計、心電計、筋電計などの改良に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a bioelectrical signal measuring device for detecting and recording changes in the action potential of a living body using electrodes adhered to the skin surface, and for use in diagnosis. This relates to the improvement of electroencephalographs, electrocardiographs, electromyographs, etc.
さらに詳しくいえば、本発明は、接続器内に所
定の電子回路を形成させることにより上記生体電
気信号測定装置における雑音の影響を少なくし、
正確な測定結果が得られるように、改良した新規
な装置に関するものである。 More specifically, the present invention reduces the influence of noise on the bioelectrical signal measuring device by forming a predetermined electronic circuit in the connector,
The present invention relates to a new and improved device that allows accurate measurement results to be obtained.
従来の技術
一般に生体の活動電位を測定してその結果を診
断に利用することが広く行われているが、この場
合には、被験者の所定部位に生体電極を接着し、
この生体電極に連なるリード線の各一端に設けら
れたジヤツクを一括して中継コネクターに接続
し、この中継コネクターを、測定器の入力コネク
ターに接続して行うのが普通である。ところで、
この生体電気信号測定装置は、通常、生体活動電
位を増幅して取り出す前記増幅器と、測定装置の
ペン書オツシログラフや電磁オツシログラフを駆
動するための出力を得る主増幅器を有している
が、信号線の揺動に起因する雑音や外来誘導雑音
の影響を受けやすく、この傾向は特に脳波のよう
に電位変化の小さいものについて著しい。BACKGROUND TECHNOLOGY Generally, it is widely practiced to measure the action potential of a living body and use the results for diagnosis.
Normally, the jacks provided at each end of the lead wires connected to the bioelectrode are connected together to a relay connector, and this relay connector is connected to the input connector of the measuring instrument. by the way,
This bioelectrical signal measuring device usually has the above-mentioned amplifier that amplifies and extracts the biological action potential, and a main amplifier that obtains an output for driving the pen-written oscillograph or electromagnetic oscillograph of the measuring device. They are susceptible to noise caused by fluctuations in the brain and externally induced noise, and this tendency is particularly noticeable for electroencephalograms, which have small potential changes.
これまで、このような雑音の影響を防ぐには、
生体と測定装置との距離をできるだけ短かくし、
また生体や接続器、信号線、測定器などを遮へい
する手段がとられているが、この場合、生体電気
信号を正確に検知するには測定装置への入力抵抗
を高くしなければならず、他方、雑音の影響を少
なくするには、入力抵抗を低くしなければならな
いというたがいに相反する要求を満たすために、
ある点で妥協せざるを得ず、したがつて信号対雑
音比を高めるにはおのずから限度があつた。 Until now, to prevent the effects of such noise,
Keep the distance between the living body and the measurement device as short as possible,
In addition, measures are taken to shield the living body, connectors, signal lines, measuring instruments, etc., but in this case, in order to accurately detect bioelectrical signals, the input resistance to the measuring device must be increased. On the other hand, in order to satisfy the conflicting demands that the input resistance must be low in order to reduce the influence of noise,
Compromises had to be made in certain respects, and therefore there was a natural limit to how high the signal-to-noise ratio could be.
発明が解決しようとする問題点
本発明の目的は、生体電気信号を正確に検知す
るのに十分な入力抵抗を維持したまま、信号対雑
音比を十分に向上させることができる生体電気信
号測定装置を提供することである。Problems to be Solved by the Invention An object of the present invention is to provide a bioelectrical signal measuring device capable of sufficiently improving the signal-to-noise ratio while maintaining sufficient input resistance to accurately detect bioelectrical signals. The goal is to provide the following.
問題点を解決するための手段
本発明者らは、種々研究を重ねた結果、前置増
幅器に相当する部分に、生体電極からの入力信号
を高抵抗で受け取り、測定器に対する出力信号を
低抵抗で送り出す電子回路を介設することにより
前記の目的を達成しうることを見出し、本発明を
なすに至つた。Means for Solving the Problems As a result of various studies, the inventors of the present invention have developed a system that receives input signals from bioelectrodes through high resistance in a portion corresponding to a preamplifier, and transmits output signals to a measuring device through low resistance. The present inventors have discovered that the above object can be achieved by interposing an electronic circuit for sending out signals, and have accomplished the present invention.
すなわち、本発明は、生体電極を係脱自在の中
継コネクター、入力コネクターを介して信号線に
より測定器に接続した装置において、上記生体電
極に連なる入力端子の一方に演算増幅器を介設す
るとともに、この演算増幅器の出力側を抵抗を介
して出力端子の一方に接続して形成した電子回路
を、前記中継コネクターと入力用コネクターのい
ずれか一方又は両方に付設したことを特徴とする
生体電気信号測定装置を提供するものである。 That is, the present invention provides a device in which a bioelectrode is connected to a measuring instrument by a signal line via a detachable relay connector and an input connector, and an operational amplifier is interposed in one of the input terminals connected to the bioelectrode. A bioelectrical signal measurement characterized in that an electronic circuit formed by connecting the output side of the operational amplifier to one of the output terminals via a resistor is attached to either or both of the relay connector and the input connector. It provides equipment.
実施例
次に添付図面に従つて本発明の実施例について
説明すると、第１図は、本発明装置の実施例を示
す説明図であつて、１は生体頭部、２は生体電極
であつて、この場合は脳波計用刺入電極である単
針電極を示す、３はリード線、４は中継コネクタ
ー、５は入力用コネクター、６は信号線、７は測
定装置であつて、これらは従来の装置と同様であ
るが、この発明においては第２図に明らかなよう
に入力用コネクター５は、コネクターカバー５′
の内部に信府線６に連なるプラグ８のほかに第３
図に示す電子回路９が組み込まれている。すなわ
ち生体電極２…に接続されるプラグ８…に連なる
入力端子１０，１１の一方１０に演算増幅器１２
が接続され、この演算増幅器１２は、その出力側
を抵抗１３を介して出力端子１４，１５の一方１
４に接続され、かつ、非反転入力である他方の入
力側を出力端子１４に接続して疎結合され、緩衝
回路を構成している。なお、この電子回路９は第
１図の実施例では入力用コネクター５内に設けら
れているが、中継コネクター４の内部に設けても
よい。Embodiment Next, an embodiment of the present invention will be described according to the attached drawings. FIG. 1 is an explanatory diagram showing an embodiment of the apparatus of the present invention, in which 1 is a living body's head, 2 is a living body electrode, and FIG. In this case, a single needle electrode is used as an electroencephalogram insertion electrode. 3 is a lead wire, 4 is a relay connector, 5 is an input connector, 6 is a signal line, and 7 is a measuring device, which are conventional However, in this invention, as shown in FIG. 2, the input connector 5 is connected to the connector cover 5'.
In addition to plug 8 connected to Shinfu line 6, there is a third
An electronic circuit 9 shown in the figure is incorporated. That is, an operational amplifier 12 is connected to one of the input terminals 10 and 11 connected to the plug 8 connected to the bioelectrode 2.
is connected, and this operational amplifier 12 has its output side connected to one of output terminals 14 and 15 via a resistor 13.
4, and the other input side, which is a non-inverting input, is connected to the output terminal 14 for loose coupling, thereby forming a buffer circuit. Although this electronic circuit 9 is provided inside the input connector 5 in the embodiment shown in FIG. 1, it may also be provided inside the relay connector 4.
作用効果
本発明は上記の構成により、生体電極からの入
力信号は、入力端子１０を介して高抵抗で受取
り、出力端子１４からの生体電気信号は低抵抗で
信号線６に送り出され、前記目的が達成される。Effects According to the above-described configuration, the present invention receives the input signal from the bioelectrode with high resistance via the input terminal 10, and the bioelectrical signal from the output terminal 14 is sent out to the signal line 6 with low resistance. is achieved.
本発明は以上のように構成極めて簡単であつて
かつ上記電子回路９はコネクターの内部に組み込
まれて外部に突出しておらず、さらに演算増幅器
は本来、利得の高い直流増幅器であつて、前記脳
波用として好適である等、多くの利点がある。 The present invention has an extremely simple configuration as described above, and the electronic circuit 9 is incorporated inside the connector and does not protrude to the outside. Furthermore, the operational amplifier is originally a high gain DC amplifier, and the brain wave It has many advantages, such as being suitable for various purposes.
第１図は本発明の実施例を示す説明図、第２図
は内部部材を取り出したコネクター部分の外観
図、第３図は電子回路の回路説明図である。
１……生体頭部、２……生体電極、４……中継
コネクター、５……入力用コネクター、６……信
号線、７……測定器、９……電子回路、１０，１
１……入力端子、１２……演算増幅器、１３……
抵抗、１４，１５……出力端子。
FIG. 1 is an explanatory diagram showing an embodiment of the present invention, FIG. 2 is an external view of a connector portion with internal members taken out, and FIG. 3 is an explanatory diagram of an electronic circuit. 1... Biological head, 2... Bioelectrode, 4... Relay connector, 5... Input connector, 6... Signal line, 7... Measuring instrument, 9... Electronic circuit, 10,1
1...Input terminal, 12...Operation amplifier, 13...
Resistor, 14, 15...output terminal.
Claims (1)
コネクターを介して信号線により測定器に接続し
た装置において、上記生体電極に連なる入力端子
の一方に演算増幅器を介設するとともに、この演
算増幅器の出力側を抵抗を介して出力端子の一方
に接続して形成した電子回路を、前記中継コネク
ターと入力用コネクターのいずれか一方又は両方
に付設したことを特徴とする生体電気信号測定装
置。1. In a device in which a bioelectrode is connected to a measuring instrument by a signal line via a detachable relay connector and an input connector, an operational amplifier is interposed in one of the input terminals connected to the bioelectrode, and the output of this operational amplifier is A bioelectrical signal measuring device characterized in that an electronic circuit formed by connecting one side of the output terminal to one of the output terminals via a resistor is attached to either or both of the relay connector and the input connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61093269A JPS62249638A (en) | 1986-04-24 | 1986-04-24 | Apparatus for measuring electric signal of living body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61093269A JPS62249638A (en) | 1986-04-24 | 1986-04-24 | Apparatus for measuring electric signal of living body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62249638A JPS62249638A (en) | 1987-10-30 |
| JPH0347090B2 true JPH0347090B2 (en) | 1991-07-18 |
Family
ID=14077745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61093269A Granted JPS62249638A (en) | 1986-04-24 | 1986-04-24 | Apparatus for measuring electric signal of living body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62249638A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2608962C (en) * | 2005-07-01 | 2016-12-06 | Scott Chetham | Monitoring system |
| AU2015248452A1 (en) * | 2014-04-18 | 2016-11-24 | Healthwatch Ltd. | Connector and cable assembly for smart garments |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS612563U (en) * | 1984-06-11 | 1986-01-09 | 小松造機株式会社 | Mudguard device for motor radar |
-
1986
- 1986-04-24 JP JP61093269A patent/JPS62249638A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62249638A (en) | 1987-10-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |