JP3595967B2 - Adsorption electrode - Google Patents
Adsorption electrode Download PDFInfo
- Publication number
- JP3595967B2 JP3595967B2 JP3580498A JP3580498A JP3595967B2 JP 3595967 B2 JP3595967 B2 JP 3595967B2 JP 3580498 A JP3580498 A JP 3580498A JP 3580498 A JP3580498 A JP 3580498A JP 3595967 B2 JP3595967 B2 JP 3595967B2
- Authority
- JP
- Japan
- Prior art keywords
- suction
- rubber ball
- cup
- skin
- pressure
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- 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 - Fee Related
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Description
【０００１】
【産業上の利用分野】
本発明は、心電図測定などに用いられる吸着電極に係り、特に生体の皮膚に密着する機能が優れた吸着電極に関する。
【０００２】
【従来の技術】
生体の心電図測定などに用いられる吸着電極は、従来は図２に示すように、球状に形成された吸引部としてのゴム球１は、外側直径上において円筒状に形成されたゴム球取付金具２に取り付けられている。ゴム球取付金具２のゴム球１の外側に突出する一端には半球状に形成された吸着部としてのカップ３が気密に固定されており、ゴム球１とカップ３とのそれぞれの内部はゴム球取付金具２の内周を介して連通している。カップ３は通常洋白金属で形成されている。またゴム球取付金具２には心電図などの信号を外部に導出する誘導チップ取付部４が固定されている。
【０００３】
上記のように構成された吸着電極を被検者の皮膚に装着するときは、ゴム球１を圧縮した状態で被検者の皮膚に押し付けた後にゴム球１の押圧を解除する。この結果ゴム球１は復元力により膨脹し、カップ３内は負圧となって皮膚を吸着する。この状態でカップ３は皮膚に密着され心電図などの信号を取り出すことができる。
【０００４】
【発明が解決しようとする課題】
しかしながら従来のゴム球１の肉厚は全周にわたってほぼ均一であり、比較的厚かった。このためゴム球１の押圧を解除したときのカップ３内の負圧が大きくなり、カップ３の皮膚との接触部において空気もれが発生しやすく、吸着後の吸着圧力を一定に保つことが困難であった。また吸着圧力が大きいため装着部位の皮膚にうっ血が発生するおそれがあった。さらに空気もれによりカップ３内の圧力が減少してもゴム球１の変形を判別しにくく、圧力減少状態を判別することが困難であった。
【０００５】
本発明はこのような状況に鑑みてなされたもので、吸着圧力を最適とし長時間にわたって一定に保つことができ、しかも吸着部の圧力減少状態を容易に判別することのできるとができる吸着電極を提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、本発明は、弾性部材で球状に形成された吸引部と、導電部材で半球状に形成され、前記吸引部の内部と連通する吸着部とからなる吸着電極において、前記吸引部の周壁の一部の肉厚を他の部分の肉厚より薄くしたことを特徴とする。
【０００７】
【作用】
上記のように構成された吸着電極においては、吸引部を圧縮した状態で吸着部を被検者の皮膚に押し付けた後に吸引部の押圧を解除したとき、吸引部は復元力により膨脹して吸着部の内部が負圧となり皮膚に吸着する。このとき吸着初期においては吸着部は吸引部の肉厚部分の復元力により大きい負圧となる。吸着が完了すると薄肉部分が内側に僅かに変形して、吸着部内の負圧は小さくなり、この状態で一定に保たれる。この結果装着部位の皮膚のうっ血を軽減することができる。
【０００８】
また吸着部と皮膚との間に空気漏れが発生し、吸着部内の負圧が、減少すると薄肉部分は外側に変形するので、この変形量を目視することにより圧力減少状態を検知することができ、吸着電極の脱落を予知することができる。
【０００９】
【実施例】
以下、本発明の吸着電極の一実施例を図面を参照して説明する。
【００１０】
図１に本発明の一実施例の構成を示す。図１において、図２に示す従来例の部分に対応する部分には同一の符号を付してあり、その説明は適宜省略する。本実施例の特徴はゴム球１の頂部１ａの肉厚を他の部分の肉厚より薄くした点にある。
なお本実施例ではカップ３の材質を柔軟導電ゴムとした。
【００１１】
次に本実施例の作用を説明する。吸着電極のゴム球１を圧縮した状態でカップ３を被検者の皮膚の押し付けた後にゴム球１の押圧を解除すると、ゴム球１は復元力により膨脹してカップ３の内部が負圧となり皮膚に吸着する。このとき吸着初期においてはカップ３の内部はゴム球１の肉厚部分の復元力に大きい負圧となる。吸着が完了するとゴム球１の薄肉の頂部１ａが内側に僅かに変形して、ゴム球１内の負圧は小さくなり、この状態で一定に保たれる。この結果装着部位の皮膚のうっ血を軽減することができる。
【００１２】
またカップ３と皮膚との間に空気漏れが発生し、カップ３内の負圧が減少すると、ゴム球１の薄肉の頂部１ａは外側に変形突出するので、この変形量を目視することにより圧力減少状態を検知することができ、吸着電極の脱落を予知することができる。さらにカップ３を柔軟導電ゴムで形成することにより、空気漏れの発生を少なくすることができる。
【００１３】
本実施例によれば、ゴム球１に薄肉の頂部１ａを形成したので、最適吸着圧力を長時間にわたって一定に保つことができ、装着部位の皮膚のうっ血の発生を軽減することができる。また空気漏れによるカップ３内の圧力減少状態を頂部１ａの変形量によって検知することができ、吸着電極の脱落を予知することができる。
さらにカップ３を柔軟導電ゴムで形成することにより、空気漏れの発生を少なくすることができる。
【００１４】
なお、ゴム球１に形成される薄肉部の部位は頂部１ａに限定されず、例えば側面であってもよい。またカップ３は従来通り金属で形成してもよい。
【００１５】
【発明の効果】
以上説明したように本発明の吸着電極によれば、吸引部の周壁の一部の肉厚を他の部分の肉厚より薄くしたので、最適吸着圧力を長時間一定に保つことができ、装着部位の皮膚のうっ血の発生を軽減することができる。また薄肉部の変形を検知することにより、吸引部内の空気漏れによる圧力減少状態を検知することができ、吸着電極の脱落を予知することができる。
【図面の簡単な説明】
【図１】本発明の吸着電極の一実施例の構成を示す一部断面正面図。
【図２】従来の吸着電極の一例の構成を示す一部断面正面図。
【符号の説明】
１ ゴム球（吸引部） １ａ 頂部（薄肉部）
３ カップ（球着部）[0001]
[Industrial applications]
The present invention relates to an adsorption electrode used for electrocardiogram measurement and the like, and more particularly to an adsorption electrode having an excellent function of adhering to skin of a living body.
[0002]
[Prior art]
Conventionally, as shown in FIG. 2, an adsorption electrode used for measuring an electrocardiogram of a living body has a rubber ball 1 as a suction portion formed in a spherical shape, and a rubber
[0003]
When the suction electrode configured as described above is mounted on the skin of the subject, the rubber ball 1 is pressed against the skin of the subject in a compressed state, and then the rubber ball 1 is released from the pressure. As a result, the rubber ball 1 expands due to the restoring force, and the inside of the cup 3 becomes a negative pressure to adsorb the skin. In this state, the cup 3 is brought into close contact with the skin and can take out signals such as electrocardiograms.
[0004]
[Problems to be solved by the invention]
However, the thickness of the conventional rubber ball 1 was almost uniform over the entire circumference and was relatively thick. For this reason, the negative pressure in the cup 3 when the pressing of the rubber ball 1 is released increases, and air leaks easily at the contact portion of the cup 3 with the skin, so that the suction pressure after suction can be kept constant. It was difficult. In addition, since the suction pressure is large, there is a possibility that congestion may occur on the skin at the mounting site. Furthermore, even if the pressure in the cup 3 is reduced due to air leakage, it is difficult to determine the deformation of the rubber ball 1 and it is difficult to determine the reduced pressure state.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of such a situation, and is an adsorption electrode capable of optimizing an adsorption pressure, keeping the pressure constant for a long time, and easily determining a pressure reduction state of an adsorption section. The purpose is to provide.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a suction electrode comprising a suction portion formed in a spherical shape by an elastic member and a suction portion formed in a hemispherical shape by a conductive member and communicating with the inside of the suction portion. The thickness of a part of the peripheral wall of the suction part is thinner than the thickness of the other part.
[0007]
[Action]
In the suction electrode configured as described above, when the suction unit is pressed against the skin of the subject while the suction unit is compressed and the suction unit is released, the suction unit expands due to the restoring force and sucks. The inside of the part becomes negative pressure and adsorbs to the skin. At this time, in the initial stage of the suction, the suction portion has a negative pressure larger than the restoring force of the thick portion of the suction portion. When the suction is completed, the thin portion is slightly deformed inward, and the negative pressure in the suction portion is reduced, and is kept constant in this state. As a result, it is possible to reduce congestion of the skin at the mounting site.
[0008]
In addition, when air leakage occurs between the suction part and the skin, and the negative pressure in the suction part decreases, the thin part deforms outward, so it is possible to detect the pressure reduction state by visually observing the amount of this deformation. In addition, the falling off of the adsorption electrode can be predicted.
[0009]
【Example】
Hereinafter, an embodiment of the adsorption electrode of the present invention will be described with reference to the drawings.
[0010]
FIG. 1 shows the configuration of one embodiment of the present invention. In FIG. 1, portions corresponding to those of the conventional example shown in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted as appropriate. The feature of this embodiment is that the thickness of the top portion 1a of the rubber ball 1 is made smaller than the thickness of the other portions.
In this embodiment, the material of the cup 3 is a flexible conductive rubber.
[0011]
Next, the operation of the present embodiment will be described. When the rubber ball 1 is released after the cup 3 is pressed against the skin of the subject with the rubber ball 1 of the suction electrode compressed, the rubber ball 1 expands due to the restoring force and the inside of the cup 3 becomes negative pressure. Adsorbs on skin. At this time, in the initial stage of the suction, the inside of the cup 3 has a large negative pressure for restoring force of the thick portion of the rubber ball 1. When the suction is completed, the thin top portion 1a of the rubber ball 1 is slightly deformed inward, and the negative pressure in the rubber ball 1 is reduced, and is kept constant in this state. As a result, it is possible to reduce congestion of the skin at the mounting site.
[0012]
When an air leak occurs between the cup 3 and the skin and the negative pressure in the cup 3 decreases, the thin top 1a of the rubber ball 1 deforms and protrudes outward. The decrease state can be detected, and the falling off of the suction electrode can be predicted. Further, by forming the cup 3 from flexible conductive rubber, the occurrence of air leakage can be reduced.
[0013]
According to this embodiment, since the thin top portion 1a is formed on the rubber ball 1, the optimum suction pressure can be kept constant for a long time, and the occurrence of congestion on the skin at the mounting site can be reduced. In addition, the state of pressure decrease in the cup 3 due to air leakage can be detected by the amount of deformation of the top 1a, and it is possible to predict the falling off of the suction electrode.
Further, by forming the cup 3 from flexible conductive rubber, the occurrence of air leakage can be reduced.
[0014]
In addition, the site | part of the thin part formed in the rubber ball 1 is not limited to the top part 1a, For example, it may be a side surface. Further, the cup 3 may be formed of metal as in the related art.
[0015]
【The invention's effect】
As described above, according to the suction electrode of the present invention, the thickness of a part of the peripheral wall of the suction part is made thinner than the thickness of the other part, so that the optimum suction pressure can be kept constant for a long time, The occurrence of congestion on the skin at the site can be reduced. Further, by detecting the deformation of the thin portion, it is possible to detect a pressure reduction state due to air leakage in the suction portion, and it is possible to predict the falling off of the suction electrode.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional front view showing a configuration of one embodiment of an adsorption electrode of the present invention.
FIG. 2 is a partial cross-sectional front view showing a configuration of an example of a conventional suction electrode.
[Explanation of symbols]
1 Rubber ball (suction part) 1a Top part (thin part)
3 cups (ball landing)
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3580498A JP3595967B2 (en) | 1998-02-18 | 1998-02-18 | Adsorption electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3580498A JP3595967B2 (en) | 1998-02-18 | 1998-02-18 | Adsorption electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11225977A JPH11225977A (en) | 1999-08-24 |
| JP3595967B2 true JP3595967B2 (en) | 2004-12-02 |
Family
ID=12452121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3580498A Expired - Fee Related JP3595967B2 (en) | 1998-02-18 | 1998-02-18 | Adsorption electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3595967B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018221375A1 (en) | 2017-05-29 | 2018-12-06 | 東洋紡株式会社 | Biometric information measuring garment |
| JPWO2019044649A1 (en) | 2017-08-29 | 2020-08-20 | 東洋紡株式会社 | Bio-contact electrodes and clothing for measuring biological information |
-
1998
- 1998-02-18 JP JP3580498A patent/JP3595967B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11225977A (en) | 1999-08-24 |
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