JP2001198097A - 2-electrode/3-electrode conversion connector - Google Patents
2-electrode/3-electrode conversion connectorInfo
- Publication number
- JP2001198097A JP2001198097A JP2000013806A JP2000013806A JP2001198097A JP 2001198097 A JP2001198097 A JP 2001198097A JP 2000013806 A JP2000013806 A JP 2000013806A JP 2000013806 A JP2000013806 A JP 2000013806A JP 2001198097 A JP2001198097 A JP 2001198097A
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- JP
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- Prior art keywords
- electrode
- electrodes
- potential
- reference potential
- 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.)
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、２電極を用いて３
電極用心電図測定装置による心電図測定が可能となる２
電極／３電極変換接続器に関する。[0001] The present invention relates to a three-electrode system using two electrodes.
Electrocardiogram measurement by electrode electrocardiogram measurement device becomes possible 2
It relates to an electrode / 3 electrode conversion connector.
【０００２】[0002]
【従来の技術】心電図測定には、通常、図５に示すよう
なシステムが用いられている。すなわち、被験者Ａには
３つの電極１、２、３をそれぞれ装着し、それらから検
出される電位を、リード線４、５、６およびコネクタ７
を介して３電極用心電図測定装置８に与えるようにして
いる。ここで電極１は差動増幅部９に与えるべき（＋）
電位を、電極２はその（−）電位を、電極３は基準電位
（Ｎ）をそれぞれ導出するためのものである。リード線
４、５、６はリード部とシールド部から成るシールド線
である。電極１、２、３、リード線４、５、６およびコ
ネクタ７は一体化されており、その外観を図６に示す。2. Description of the Related Art A system as shown in FIG. 5 is usually used for measuring an electrocardiogram. That is, three electrodes 1, 2, and 3 are attached to the subject A, respectively, and the potential detected from them is applied to the lead wires 4, 5, 6 and the connector 7.
To the electrocardiogram measuring device 8 for three electrodes via the. Here, the electrode 1 should be given to the differential amplifier 9 (+)
The electrode 2 is for deriving the potential, the electrode 2 is for deriving the (-) potential, and the electrode 3 is for deriving the reference potential (N). The lead wires 4, 5, and 6 are shield wires composed of a lead portion and a shield portion. The electrodes 1, 2, 3, the lead wires 4, 5, 6 and the connector 7 are integrated, and the appearance is shown in FIG.
【０００３】このような構成による心電図測定におい
て、使い捨て電極が使用されるならば使用後の処理が便
利である。しかし病院では使い捨て電極はコストが無視
できず、そのコストダウンが望まれている。[0003] In the electrocardiogram measurement with such a configuration, if a disposable electrode is used, processing after use is convenient. However, the cost of disposable electrodes cannot be ignored in hospitals, and cost reduction is desired.
【０００４】このコストダウンを図るべく、２つの電極
を用いて心電図測定をする２電極用心電図測定装置が従
来よりある。この装置が用いられたシステムの構成を図
７に示す。被験者Ａには２つの電極１、２が装着され、
これらから得られる検出電位は、リード線４、５および
コネクタ１１を介して２電極用心電図測定装置１２に至
るようにされている。２電極用心電図測定装置１２は入
力部に２電極バイアス回路１３を備え、上記検出電位
は、この２電極バイアス回路１３を経て基準電位を導出
しつつ差動増幅部９に至るようにされている。リード線
４、５はシールド線である。電極１、２、リード線４、
５およびコネクタ１１は一体化されており、その外観を
図８に示す。[0004] In order to reduce the cost, there has been a two-electrode electrocardiogram measuring apparatus for performing an electrocardiogram measurement using two electrodes. FIG. 7 shows the configuration of a system using this device. The subject A is equipped with two electrodes 1 and 2,
The detected potential obtained from these components reaches the two-electrode electrocardiogram measuring device 12 via the leads 4 and 5 and the connector 11. The two-electrode electrocardiogram measuring device 12 includes a two-electrode bias circuit 13 at an input portion, and the detected potential is supplied to the differential amplifier 9 while deriving a reference potential via the two-electrode bias circuit 13. . Lead wires 4 and 5 are shield wires. Electrodes 1, 2, lead wire 4,
5 and the connector 11 are integrated, and the appearance is shown in FIG.
【０００５】[0005]
【発明が解決しようとする課題】一般に心電図測定装置
としては、３電極用が普及し、その数は多い。しかし使
い捨て電極を用いた場合には、上記のように３電極によ
る測定はコストの面で不利である。一方、２電極用のコ
ネクタは上記のような構造であるので３電極用心電図測
定装置には接続することができない。また、２電極がそ
れぞれ接続されたリード線を直接に３電極用心電図測定
装置の（＋）入力端子、（−）入力端子に接続しても、
基準電位が得られないので、３電極用心電図測定装置に
よる測定はできない。Generally, three-electrode electrocardiogram measuring devices have become widespread, and the number thereof is large. However, when disposable electrodes are used, measurement using three electrodes is disadvantageous in terms of cost as described above. On the other hand, since the two-electrode connector has the above-described structure, it cannot be connected to the three-electrode electrocardiogram measuring device. Further, even if the lead wires to which the two electrodes are connected are directly connected to the (+) input terminal and the (-) input terminal of the three-electrode electrocardiogram measuring apparatus,
Since a reference potential cannot be obtained, measurement using an electrocardiogram measuring device for three electrodes cannot be performed.
【０００６】本発明はこのような事情を考慮してなされ
たものであり、その目的は、２電極を用いて３電極用心
電図測定装置により心電図測定ができるようにすること
である。The present invention has been made in view of such circumstances, and an object of the present invention is to make it possible to perform an electrocardiogram measurement using a two-electrode electrocardiogram measuring apparatus.
【０００７】[0007]
【課題を解決するための手段】請求項１に係る発明は、
生体に装着された２電極の検出電位を、基準電位を検出
する電極を含む３電極の検出電位を入力とする３電極用
心電図測定装置に入力するための２電極／３電極変換接
続器であって、前記２電極の検出電位から基準電位を抽
出する基準電位抽出回路を備え、前記２電極の検出電位
と共に、前記基準電位抽出回路により抽出された基準電
位を前記３電極用心電図測定装置に入力することを特徴
とする。The invention according to claim 1 is
A two-electrode / three-electrode conversion connector for inputting detection potentials of two electrodes attached to a living body to a three-electrode electrocardiogram measuring device that receives detection potentials of three electrodes including an electrode for detecting a reference potential. A reference potential extracting circuit for extracting a reference potential from the detected potentials of the two electrodes, and inputting the detected potential of the two electrodes and the reference potential extracted by the reference potential extracting circuit to the electrocardiogram measuring device for three electrodes. It is characterized by doing.
【０００８】この２電極／３電極変換接続器を３電極用
心電図測定装置に接続して、２電極による測定を行うな
らば、基準電位抽出回路から抽出される電位が、測定に
より得られる基準電位として３電極用心電図測定装置で
は使用され、心電図測定が行われる。If the two-electrode / three-electrode conversion connector is connected to a three-electrode electrocardiogram measuring device and measurement is performed using two electrodes, the potential extracted from the reference potential extraction circuit is the reference potential obtained by the measurement. Is used in a three-electrode electrocardiogram measurement apparatus to perform electrocardiogram measurement.
【０００９】請求項２に係る発明によれば、前記基準電
位抽出回路は、抵抗器である第１の回路要素と、抵抗器
とコンデンサを直列に接続して成る第２の回路要素とを
有し、第１の回路要素の一端は前記２電極の一方の電極
の検出電位が与えられるようにされ、第２の回路要素の
一端は前記２電極の他方の電極の検出電位が与えられる
ようにされ、第１の回路要素と第２の回路要素のそれぞ
れの他端は相互に接続されおり、この接続点の電位を基
準電位とすることを特徴とする。According to the second aspect of the present invention, the reference potential extracting circuit has a first circuit element which is a resistor and a second circuit element formed by connecting a resistor and a capacitor in series. One end of the first circuit element is provided with a detection potential of one of the two electrodes, and one end of the second circuit element is provided with a detection potential of the other electrode of the two electrodes. The other ends of the first circuit element and the second circuit element are connected to each other, and the potential at this connection point is used as a reference potential.
【００１０】この構成によれば、基準電位に基づく２つ
の電極のバイアス電圧が設定されることになり、安定し
た心電図測定を行うことができる。また、３電極用心電
図測定装置が、入力端子に微小電流を流し、その入力端
子の電位の異常を検出して電極外れを検出する機能を備
えたものである場合、この変換接続器が接続され、電極
外れが生じたときに、前記コンデンサに電荷が蓄えられ
て入力端子の電位が異常となるので、これによって電極
外れが検出される。According to this configuration, the bias voltages of the two electrodes are set based on the reference potential, so that a stable electrocardiogram measurement can be performed. When the three-electrode electrocardiogram measuring device has a function of flowing a minute current to the input terminal and detecting an abnormality in the potential of the input terminal to detect electrode detachment, this conversion connector is connected. When the electrode detachment occurs, the electric charge is stored in the capacitor and the potential of the input terminal becomes abnormal, so that the electrode detachment is detected.
【００１１】請求項３に係る発明は、前記基準電位抽出
回路は、２つの抵抗器を有し、一方の抵抗器の一端は前
記２電極の一方の電極により検出される電位が与えられ
るようにされ、他方の抵抗器の一端は前記２電極の他方
の電極により検出される電位が与えられるようにされ、
前記２つの抵抗器のそれぞれの他端は相互に接続されお
り、この接続点の電位を基準電位とすることを特徴とす
る。According to a third aspect of the present invention, the reference potential extracting circuit has two resistors, and one end of one resistor is supplied with a potential detected by one of the two electrodes. One end of the other resistor is provided with a potential detected by the other of the two electrodes,
The other ends of the two resistors are connected to each other, and the potential at this connection point is used as a reference potential.
【００１２】この構成によれば、基準電位に基づく２つ
の電極のバイアス電圧が設定されることになり、安定し
た心電図測定を行うことができる。According to this configuration, the bias voltages of the two electrodes are set based on the reference potential, so that a stable electrocardiogram measurement can be performed.
【００１３】請求項４にかかる発明は、前記３電極用心
電図測定装置の入力端子に接続される端子を備え前記基
準電位抽出回路を内蔵するコネクタと、前記基準電位抽
出回路と前記２電極をそれぞれ接続するリード線とから
成ることを特徴とする。According to a fourth aspect of the present invention, there is provided a connector having a terminal connected to an input terminal of the three-electrode electrocardiogram measuring device, the connector having the built-in reference potential extracting circuit, and connecting the reference potential extracting circuit and the two electrodes respectively. And a lead wire to be connected.
【００１４】これにより、この変換接続器は、３電極用
心電図測定装置に対する接続部分と、電極の検出電位を
導く部分が一体化され、測定のための操作を容易にする
ことができる。Thus, in this conversion connector, a portion for connecting to the electrocardiogram measuring device for three electrodes and a portion for guiding the detection potential of the electrodes are integrated, and the operation for measurement can be facilitated.
【００１５】請求項５に係る発明は、前記リード線は、
リード部とシールド部から成るシールド線であることを
特徴とする。これにより、外界からリード線を介して混
入するノイズの低下を図ることができる。[0015] In the invention according to claim 5, the lead wire is:
It is a shielded wire comprising a lead portion and a shield portion. Thus, it is possible to reduce noise mixed in from the outside via the lead wire.
【００１６】請求項６に係る発明は、前記リード線は、
前記コネクタに対し着脱自在となっていることを特徴と
する。これにより、この変換接続器の保管、収納、リー
ド部の交換が容易となる。[0016] In the invention according to claim 6, the lead wire is:
The connector is detachable from the connector. This facilitates storage, storage, and replacement of the lead portion of the conversion connector.
【００１７】[0017]
【発明の実施の形態】本発明の第１の実施の形態の２電
極／３電極変換接続器が用いられた２電極による心電図
測定システムを図１に示す。この２電極／３電極変換接
続器２１は、２本のリード線２２、２３と、基準電位抽
出回路２４を内蔵したコネクタ２５から成る。リード線
２２、２３は、それぞれリード部２２ａ、２３ａとシー
ルド部２２ｂ、２３ｂから成るシールド線である。基準
電位抽出回路２４は、抵抗器Ｒ１から成る第１の回路要
素と、抵抗器Ｒ２およびコンデンサＣを直列接続して成
る第２の回路要素とから構成される。第１、第２の回路
要素の一端は相互に接続され、この接続点が基準電位と
なる点であり、コネクタ２５の基準電位接続端子に接続
されている。第１、第２の回路要素のそれぞれの他端
は、リード線２３、２２の中のリード部２３ａ、２２ａ
にそれぞれ接続されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a two-electrode electrocardiogram measuring system using a two-electrode / 3-electrode conversion connector according to a first embodiment of the present invention. The two-electrode / three-electrode conversion connector 21 includes two leads 22 and 23 and a connector 25 having a built-in reference potential extraction circuit 24. The lead wires 22 and 23 are shield wires composed of lead portions 22a and 23a and shield portions 22b and 23b, respectively. The reference potential extracting circuit 24 includes a first circuit element including a resistor R1 and a second circuit element including a resistor R2 and a capacitor C connected in series. One ends of the first and second circuit elements are connected to each other, and this connection point is a point that becomes a reference potential, and is connected to a reference potential connection terminal of the connector 25. The other end of each of the first and second circuit elements is connected to a lead portion 23a, 22a in a lead wire 23, 22.
Connected to each other.
【００１８】リード線２２、２３の先端には、電極１、
２をリード部２２ａ、２３ａに対し着脱自在とする取付
け部（図示省略）を備えている。At the ends of the lead wires 22 and 23, electrodes 1,
2 is provided with an attachment portion (not shown) for detachably attaching to the lead portions 22a and 23a.
【００１９】この２電極／３電極変換接続器２１の外観
を図２に示す。図２に示すように、コネクタ２５には、
（＋）電位接続端子、（−）電位接続端子、基準電位接
続端子（Ｎ）、シールド端子（ＳＨ）から成る４本の接
続端子を備えている。FIG. 2 shows the appearance of the two-electrode / 3-electrode conversion connector 21. As shown in FIG.
It has four connection terminals including a (+) potential connection terminal, a (-) potential connection terminal, a reference potential connection terminal (N), and a shield terminal (SH).
【００２０】これらの端子は、図１に示したように、３
電極用心電図測定装置３１の入力部に接続されている。
３電極用心電図測定装置３１は、従来より用いられてい
る型のもので、２つの入力の差分を増幅する差動増幅部
３２、差動増幅部３２の出力の低域周波数成分をカット
するＣＲ回路部３３、ＣＲ回路部３３の出力を増幅する
増幅部３４、増幅部３４の出力のノイズをカットするフ
ィルタ３５、フィルタ３５の出力を表示する表示器３６
を備えている。ここで差動増幅部３２の構成を図３に示
す。この図に示すように差動増幅部３２では、検出され
た（＋）電位と（−）電位はそれぞれバッファアンプ３
８、３９を介して、差動増幅回路４０に至り、ここでそ
れらの信号の差分が増幅されて出力されようになってい
る。バッファアンプ３８、３９はオペアンプであり、そ
の入力側には入力バイアス電流や、入力を数十ＭΩの高
抵抗で電源にプルアップすることによる微小電流が流れ
るようにされている。These terminals are connected to three terminals as shown in FIG.
It is connected to the input part of the electrocardiogram measuring device 31 for electrodes.
The three-electrode electrocardiogram measuring device 31 is of a type conventionally used, and includes a differential amplifier 32 for amplifying a difference between two inputs, and a CR for cutting a low frequency component of an output of the differential amplifier 32. A circuit section 33, an amplifying section 34 for amplifying an output of the CR circuit section 33, a filter 35 for cutting noise of an output of the amplifying section 34, and a display 36 for displaying an output of the filter 35
It has. Here, the configuration of the differential amplifier 32 is shown in FIG. As shown in this drawing, in the differential amplifier 32, the detected (+) potential and (−) potential are respectively
The signal reaches the differential amplifier circuit 40 via the terminals 8 and 39, where the difference between the signals is amplified and output. The buffer amplifiers 38 and 39 are operational amplifiers, and an input bias current or a minute current caused by pulling up the input to a power supply with a high resistance of several tens of MΩ flows to the input side thereof.
【００２１】３電極用心電図測定装置３１は、図１に示
すように外れ検出部３７を備えている。外れ検出部３７
は、差動増幅部３２の（＋）入力端子の電位の異常を検
出し、これにより電極１、２の外れを検出するものであ
る。電極外れの旨は、表示器３６に表示されるようにな
っている。The three-electrode electrocardiogram measuring apparatus 31 includes a detachment detecting section 37 as shown in FIG. Detachment detector 37
Detects an abnormality in the potential of the (+) input terminal of the differential amplifying unit 32, and thereby detects disconnection of the electrodes 1 and 2. The fact that the electrode has come off is displayed on the display 36.
【００２２】このように構成された心電図測定システム
の動作を説明する。まず被験者Ａの所定の２部位に電極
１、２をそれぞれ装着し、電極１、２にリード線２２、
２３を取り付けると、差動増幅部３２の（＋）入力側の
微小電流は被験者Ａを流れるルートをとり（図１に矢印
で示す）、コネクタ２５内のコンデンサＣの電荷は０に
なり、電極１、２の電位はほぼグランド電位となり、バ
イアス電位が設定される。これにより心電図信号が検出
され表示器３６に表示される。The operation of the ECG measuring system thus configured will be described. First, electrodes 1 and 2 are attached to predetermined two portions of the subject A, respectively.
When the differential amplifier 23 is attached, the minute current on the (+) input side of the differential amplifier 32 takes a route flowing through the subject A (indicated by an arrow in FIG. 1), the charge of the capacitor C in the connector 25 becomes 0, and the electrode The potentials of 1 and 2 become almost the ground potential, and the bias potential is set. Thus, the electrocardiogram signal is detected and displayed on the display 36.
【００２３】次に電極１、２の少なくとも一方の電極が
外れると、差動増幅部３２の（＋）入力側を流れる微小
電流の行き場がなくなり、コンデンサＣに電荷が蓄えら
れ、差動増幅部３２の（＋）入力が電源付近の電圧まで
引き上げられる。この電圧が、外れ検出部３７により検
出され、その旨が表示器３６に表示される。Next, when at least one of the electrodes 1 and 2 comes off, there is no place for a small current flowing through the (+) input side of the differential amplifying unit 32, and the electric charge is stored in the capacitor C. Thirty-two (+) inputs are pulled up to a voltage near the power supply. This voltage is detected by the deviation detecting section 37, and the fact is displayed on the display 36.
【００２４】このように、本測定システムでは、電極
１、２がリード線２２、２３に接続されている状態では
バイアス電位が設定され、心電図信号が検出され、電極
１、２の少なくとも一方が外れると（＋）入力側の電圧
が上昇するので電極外れが検出される。As described above, in the present measurement system, when the electrodes 1 and 2 are connected to the lead wires 22 and 23, the bias potential is set, an electrocardiogram signal is detected, and at least one of the electrodes 1 and 2 comes off. Then, the voltage on the (+) input side rises, so that electrode separation is detected.
【００２５】図４は、第２の実施の形態の２電極／３電
極変換接続器４１を用いた場合の心電図測定システムを
示したものである。この２電極／３電極変換接続器４１
が上記の２電極／３電極変換接続器３１と異なるのは、
基準電位抽出回路４２の構成である。すなわちこの基準
電位抽出回路４２はコンデンサＣを備えず、２つの直列
接続された抵抗器から成っている。また、このシステム
に用いられる３電極用心電図測定装置４３は、図４に示
すように、電極外れを検出する手段を備えていないもの
でも良い。他の構成は、図１に示したものと同じであ
る。FIG. 4 shows an electrocardiogram measurement system using the two-electrode / 3-electrode conversion connector 41 of the second embodiment. This two-electrode / 3-electrode conversion connector 41
Is different from the two-electrode / 3-electrode conversion connector 31 described above.
This is the configuration of the reference potential extraction circuit 42. That is, the reference potential extraction circuit 42 does not include the capacitor C, and includes two series-connected resistors. In addition, the three-electrode electrocardiogram measuring device 43 used in this system may not include a means for detecting electrode detachment, as shown in FIG. Other configurations are the same as those shown in FIG.
【００２６】このシステムにおいても電極１、２にバイ
アス電位が設定されて、心電図信号を検出することがで
き、心電図測定を行うことができる。ただし、本システ
ムでは、電極外れは検出できないが、回路の簡素化を図
ることができる。Also in this system, a bias potential is set to the electrodes 1 and 2 so that an electrocardiogram signal can be detected and an electrocardiogram measurement can be performed. However, in the present system, although the detachment of the electrode cannot be detected, the circuit can be simplified.
【００２７】上記の各実施の形態において、リード線２
２、２３をコネクタ２５に対し、着脱自在の構成として
も良い。このようにすれば、この変換接続器の保管、収
納、リード線の交換が容易となる。In each of the above embodiments, the lead wire 2
The connectors 2 and 23 may be configured to be detachable from the connector 25. This facilitates storage, storage, and replacement of the lead wires of the conversion connector.
【００２８】[0028]
【発明の効果】本発明によれば、２電極を３電極用心電
図測定装置に用いて、心電図測定を行うことができる。
このため、３電極用心電図測定装置を有効に利用するこ
とができ、使い捨て電極を用いた場合のコストダウンを
図ることができる。According to the present invention, an electrocardiogram can be measured using two electrodes in an electrocardiogram measuring device for three electrodes.
For this reason, the electrocardiogram measuring device for three electrodes can be effectively used, and the cost can be reduced when disposable electrodes are used.
【図１】本発明の実施の形態の２電極／３電極変換接続
器が用いられた心電図測定システムの構成を示す図。FIG. 1 is a diagram showing a configuration of an electrocardiogram measurement system using a two-electrode / 3-electrode conversion connector according to an embodiment of the present invention.
【図２】本発明の実施の形態の２電極／３電極変換接続
器の外観図。FIG. 2 is an external view of a two-electrode / 3-electrode conversion connector according to an embodiment of the present invention.
【図３】図１に示した差動増幅部の構成図。FIG. 3 is a configuration diagram of a differential amplifier shown in FIG. 1;
【図４】本発明の他の実施の形態の２電極／３電極変換
接続器が用いられた心電図測定システムの構成を示す
図。FIG. 4 is a diagram showing a configuration of an electrocardiogram measurement system using a two-electrode / 3-electrode conversion connector according to another embodiment of the present invention.
【図５】３電極を用いた３電極用心電図測定装置による
従来の心電図測定システムの構成を示す図。FIG. 5 is a diagram showing a configuration of a conventional electrocardiogram measurement system using a three-electrode electrocardiogram measurement device using three electrodes.
【図６】図５に示すコネクタの外観図。FIG. 6 is an external view of the connector shown in FIG.
【図７】２電極を用いた２電極用心電図測定装置による
従来の心電図測定システムの構成を示す図。FIG. 7 is a diagram showing a configuration of a conventional electrocardiogram measurement system using a two-electrode electrocardiogram measurement device using two electrodes.
【図８】図７に示すコネクタの外観図。8 is an external view of the connector shown in FIG.
１、２ 電極 ２２、２３ リード線 ２１、４１ ２電極／３電極変換接続器 ２４、４２ 基準電位抽出回路 ２５ コネクタ ３１、４３ ３電極用心電図測定装置 1, 2 electrode 22, 23 Lead wire 21, 41 2 electrode / 3 electrode conversion connector 24, 42 Reference potential extraction circuit 25 Connector 31, 43 Electrocardiogram measuring device for 3 electrode
フロントページの続き (72)発明者 西海 雅敏 東京都新宿区西落合１丁目31番４号 日本 光電工業株式会社内 Ｆターム(参考） 4C027 AA02 BB00 CC00 Continuation of the front page (72) Inventor Masatoshi Saikai 1-34 Nishi-Ochiai, Shinjuku-ku, Tokyo F-term (reference) 4C027 AA02 BB00 CC00
Claims (6)
基準電位を検出する電極を含む３電極の検出電位を入力
とする３電極用心電図測定装置に入力するための２電極
／３電極変換接続器であって、 前記２電極の検出電位から基準電位を抽出する基準電位
抽出回路を備え、 前記２電極の検出電位と共に、前記基準電位抽出回路に
より抽出された基準電位を前記３電極用心電図測定装置
に入力することを特徴とする２電極／３電極変換接続
器。1. A detection potential of two electrodes attached to a living body,
A two-electrode / three-electrode conversion connector for inputting to a three-electrode electrocardiogram measuring apparatus that receives detection potentials of three electrodes including an electrode for detecting a reference potential, wherein a reference potential is determined from the detection potentials of the two electrodes. A two-electrode / three-electrode converter, comprising a reference potential extraction circuit for extracting, and a reference potential extracted by the reference potential extraction circuit, together with a detection potential of the two electrodes, is input to the electrocardiogram measuring device for three electrodes. Connector.
第１の回路要素と、抵抗器とコンデンサを直列に接続し
て成る第２の回路要素とを有し、第１の回路要素の一端
は前記２電極の一方の電極の検出電位が与えられるよう
にされ、第２の回路要素の一端は前記２電極の他方の電
極の検出電位が与えられるようにされ、第１の回路要素
と第２の回路要素のそれぞれの他端は相互に接続されお
り、この接続点の電位を基準電位とすることを特徴とす
る請求項１に記載の２電極／３電極変換接続器。2. The circuit according to claim 1, wherein the reference potential extracting circuit has a first circuit element which is a resistor, and a second circuit element formed by connecting a resistor and a capacitor in series. One end is supplied with a detection potential of one electrode of the two electrodes, and one end of a second circuit element is supplied with a detection potential of the other electrode of the two electrodes. 2. The two-electrode / three-electrode conversion connector according to claim 1, wherein the other ends of the second circuit elements are connected to each other, and the potential at this connection point is used as a reference potential.
を有し、一方の抵抗器の一端は前記２電極の一方の電極
により検出される電位が与えられるようにされ、他方の
抵抗器の一端は前記２電極の他方の電極により検出され
る電位が与えられるようにされ、前記２つの抵抗器のそ
れぞれの他端は相互に接続されおり、この接続点の電位
を基準電位とすることを特徴とする請求項１に記載の２
電極／３電極変換接続器。3. The reference potential extraction circuit has two resistors, one end of one of the resistors being supplied with a potential detected by one of the two electrodes, and the other of the two resistors. The other end of the two electrodes is supplied with a potential detected by the other of the two electrodes, and the other ends of the two resistors are connected to each other, and the potential at this connection point is used as a reference potential. 2. The method according to claim 1, wherein
Electrode / 3 electrode conversion connector.
に接続される端子を備え前記基準電位抽出回路を内蔵す
るコネクタと、前記基準電位抽出回路と前記２電極をそ
れぞれ接続するリード線とから成ることを特徴とする請
求項１乃至３のいずれか記載の２電極／３電極変換接続
器。4. A connector having a terminal connected to an input terminal of the electrocardiogram measuring device for three electrodes and incorporating the reference potential extracting circuit, and a lead wire connecting the reference potential extracting circuit and the two electrodes, respectively. The two-electrode / three-electrode conversion connector according to any one of claims 1 to 3, wherein:
から成るシールド線であることを特徴とする請求項４記
載の２電極／３電極変換接続器。5. The two-electrode / three-electrode conversion connector according to claim 4, wherein the lead wire is a shield wire including a lead part and a shield part.
脱自在となっていることを特徴とする請求項４または５
記載の２電極／３電極変換接続器。6. The connector according to claim 4, wherein the lead wire is detachable from the connector.
A two-electrode / 3-electrode conversion connector according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000013806A JP3896405B2 (en) | 2000-01-24 | 2000-01-24 | 2-electrode / 3-electrode conversion connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000013806A JP3896405B2 (en) | 2000-01-24 | 2000-01-24 | 2-electrode / 3-electrode conversion connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001198097A true JP2001198097A (en) | 2001-07-24 |
| JP3896405B2 JP3896405B2 (en) | 2007-03-22 |
Family
ID=18541345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000013806A Expired - Fee Related JP3896405B2 (en) | 2000-01-24 | 2000-01-24 | 2-electrode / 3-electrode conversion connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3896405B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007082938A (en) * | 2005-09-26 | 2007-04-05 | Ritsumeikan | Electrocardiographic apparatus |
| US10765377B2 (en) | 2015-02-03 | 2020-09-08 | National University Corporation Tokai National Higher Education And Research System | Heartbeat-signal detecting device |
| US11109790B2 (en) | 2015-11-18 | 2021-09-07 | Samsung Electronics Co., Ltd. | Patch including an external floating high-pass filter and an electrocardiograph (ECG) patch including the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06315470A (en) * | 1993-03-20 | 1994-11-15 | Hewlett Packard Co <Hp> | Receiver for differential signal |
| JPH0739533A (en) * | 1993-07-30 | 1995-02-10 | Nec San-Ei Instr Co Ltd | Induction circuit for electrocardiogram signal |
| JPH0956686A (en) * | 1995-08-28 | 1997-03-04 | Casio Comput Co Ltd | Electrocardiograph |
| JPH10179531A (en) * | 1996-12-25 | 1998-07-07 | Nec Gumma Ltd | Detecting circuit for detached electrode |
| WO2000065994A1 (en) * | 1999-05-04 | 2000-11-09 | Siemens Medical Systems, Inc. | Lead set filter for a patient monitor |
-
2000
- 2000-01-24 JP JP2000013806A patent/JP3896405B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06315470A (en) * | 1993-03-20 | 1994-11-15 | Hewlett Packard Co <Hp> | Receiver for differential signal |
| JPH0739533A (en) * | 1993-07-30 | 1995-02-10 | Nec San-Ei Instr Co Ltd | Induction circuit for electrocardiogram signal |
| JPH0956686A (en) * | 1995-08-28 | 1997-03-04 | Casio Comput Co Ltd | Electrocardiograph |
| JPH10179531A (en) * | 1996-12-25 | 1998-07-07 | Nec Gumma Ltd | Detecting circuit for detached electrode |
| WO2000065994A1 (en) * | 1999-05-04 | 2000-11-09 | Siemens Medical Systems, Inc. | Lead set filter for a patient monitor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007082938A (en) * | 2005-09-26 | 2007-04-05 | Ritsumeikan | Electrocardiographic apparatus |
| JP4738958B2 (en) * | 2005-09-26 | 2011-08-03 | 学校法人立命館 | ECG measurement device |
| US10765377B2 (en) | 2015-02-03 | 2020-09-08 | National University Corporation Tokai National Higher Education And Research System | Heartbeat-signal detecting device |
| US11109790B2 (en) | 2015-11-18 | 2021-09-07 | Samsung Electronics Co., Ltd. | Patch including an external floating high-pass filter and an electrocardiograph (ECG) patch including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3896405B2 (en) | 2007-03-22 |
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