JP2010119814A - Acquisition and application of electrocardiographic signal by noncontact electrode in high concentration carbonated spring bath - Google Patents

Acquisition and application of electrocardiographic signal by noncontact electrode in high concentration carbonated spring bath Download PDF

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JP2010119814A
JP2010119814A JP2008320234A JP2008320234A JP2010119814A JP 2010119814 A JP2010119814 A JP 2010119814A JP 2008320234 A JP2008320234 A JP 2008320234A JP 2008320234 A JP2008320234 A JP 2008320234A JP 2010119814 A JP2010119814 A JP 2010119814A
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electrocardiographic signal
bathing
bathtub
high concentration
electrocardiographic
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Toyohiko Urakawa
豊彦 浦川
Norihiko Maki
典彦 牧
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that, when noncontact electrodes to be arranged in a bathtub are used, a hot bath with general tap water or well water heated therein causes the large attenuation of an electrocardiographic signal, is largely affected by noise of a warm water fluctuation, and has a qualitative problem as waveform data though obtaining data to simply analyze a cardiac rate, since there are two methods, i.e., directly mounting a waterproof electrode on skin and using the noncontact electrodes under an unrestricted and nonconscious condition as the method for obtaining the electrocardiographic signal in bathing where a fatal accident tends to occur by a load on a circulatory system. <P>SOLUTION: In bathing with high concentration carbonate warm water, the electrocardiographic signal is obtained with the use of a plurality of anticorrosion electrodes arranged in a bathtub without newly adding an electrolyte. The obtained electrocardiographic data is secondarily used for abnormality alarm and long-distance medical care. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、高濃度炭酸泉入浴時に、入浴者の皮膚に電極等の物理的な接触をすることのない非拘束・無意識的な条件下で、入浴中の心電シグナルを取得する方法である。浴槽内に複数設置する、例えばステンレスのような、耐腐食性電極は特別な素材や形状を必要とせず、その電極面の面積が９〜１００ｃｍ２の範囲であれば、取得される心電シグナルの大きさはあまり影響されない。The present invention is a method for acquiring an electrocardiographic signal during bathing under unconstrained and unconscious conditions without physically touching the skin of a bather with an electrode or the like when bathing at a high concentration carbonated spring. An electrocardiographic signal obtained when a plurality of anticorrosive electrodes, such as stainless steel, installed in a bathtub do not require a special material or shape and the area of the electrode surface is in the range of 9 to 100 cm 2. The size of is not significantly affected.

循環系への負荷がかかることで死亡事故が発生しやすい入浴中の心電計測として、防水処理した接触電極を付けたホルター心電計で２４時間以上の長時間記録を取ることは、現在可能である。また、食塩など電解質を溶かして、水の電気伝導度を上げることで、非接触電極を使って入浴中の心電図を取ることが可能なことは、既に知られている。また、非接触の浴槽内設置の電極として、銀と塩化銀、ステンレス、ポリエステルフィルムに銀蒸着（非特許文献１）、特殊形状電極（特許文献１）などが試験的に使われてきた。
「家庭用浴槽での入浴時心電図データ収集システム」、米沢良治、魚川佳宏、槇弘倫、二宮石雄、佐田孝治、濱田眞悟共著、医器学、７２巻、２０−２５ページ、２００２年 特開２００３−１７５０８７ It is now possible to record for 24 hours or longer with a Holter electrocardiograph with a waterproof contact electrode as an electrocardiogram during bathing, which tends to cause fatal accidents due to the load on the circulatory system It is. It is already known that an electrocardiogram during bathing can be obtained using a non-contact electrode by dissolving an electrolyte such as salt to increase the electrical conductivity of water. Moreover, silver, silver chloride, stainless steel, a silver vapor deposition (nonpatent literature 1), a special-shaped electrode (patent literature 1), etc. have been used experimentally as an electrode of non-contact installation in a bathtub.
"Electrocardiogram data collection system at the time of bathing in a home tub", Ryoji Yonezawa, Yoshihiro Uokawa, Hironori Tsuji, Ishio Ninomiya, Koji Sada, Ryogo Hamada, Medical Instrumentation, Volume 72, pp. 20-25, 2002 JP2003-175087

発明が解決しようとする課題Problems to be solved by the invention

入浴時の心電シグナルを取得する際、電極を直接皮膚に装着することのない非拘束・無意識的な条件下で、かつ食塩などの電解質を新たに溶かし込むことなく、安全かつ質的にも解析可能な心電シグナルを取得することである。When acquiring an electrocardiogram signal during bathing, it is safe and qualitative, under non-restraining and unconscious conditions where electrodes are not directly attached to the skin, and without newly dissolving electrolytes such as salt. It is to obtain an electrocardiographic signal that can be analyzed.

課題を解決するための手段Means for solving the problem

高濃度炭酸泉では溶け込んでいる二酸化炭素の大部分は、遊離炭酸ガスとしてＣＯ２分子のまま存在するが、一部は炭酸イオンとして電離するため、弱酸性（ｐＨ４．５〜６程度）を呈す。そのため、水の電気伝導性が増し、他の電解質を溶解させる必要がない。心電シグナルの大きさは、皮膚への直接電極装着時に比べると、数分の一に減衰するものの、浴槽内に装着した複数の電極で入浴者の心電シグナルを容易に取得できる。（図１ロ）Most of the carbon dioxide dissolved in the high-concentration carbonated spring remains as CO 2 molecules as free carbon dioxide gas, but a part of it is ionized as carbonate ions, so it is weakly acidic (about pH 4.5 to 6). Therefore, the electrical conductivity of water is increased and there is no need to dissolve other electrolytes. Although the magnitude of the electrocardiographic signal is attenuated by a fraction of that when the electrode is directly attached to the skin, the electrocardiographic signal of the bather can be easily obtained with a plurality of electrodes installed in the bathtub. (Fig. 1 b)

第二は、従来通常の湯の場合、湯のゆらぎにより発生するノイズが影響して、正しく心電シグナルが取れないとされてきた。しかし、炭酸泉の場合は、波形の違いとピーク間の不均一性から心電シグナルとを区別できる。（図２）Secondly, in the case of conventional hot water, it has been considered that an electrocardiographic signal cannot be correctly obtained due to the influence of noise generated by fluctuation of the hot water. However, in the case of carbonated springs, an electrocardiographic signal can be distinguished from the difference in waveform and non-uniformity between peaks. (Figure 2)

第三は、入浴時と出浴時の心電図の波形は、湯のゆらぎによるノイズに加え、骨格筋の筋電シグナルの影響を受けるが、１０秒以内の短時間に限定され、その波形から容易に心電シグナルと区別される。（図３イおよびロ）Third, the electrocardiogram waveform during bathing and bathing is affected by the electromyographic signal of skeletal muscles in addition to noise caused by fluctuations in hot water, but is limited to a short time within 10 seconds. Are distinguished from ECG signals. (Figures 3a and b)

接触型電極による心電図と炭酸泉温浴時の非接触浴槽電極による心電図。比較のため、電気シグナルの大きさは相対的に示している。〔符号の説明〕（イ）通常の皮膚電極で３極誘導時（ロ）炭酸泉入浴時の非接触浴槽内電極で３極誘導時An electrocardiogram with a contact-type electrode and an electrocardiogram with a non-contact bathtub electrode during a carbonated hot spring bath. For comparison, the magnitude of the electrical signal is shown relatively. [Explanation of symbols] (b) When a triode is induced with a normal skin electrode 炭酸泉の出浴直後の湯のゆらぎにより発生するノイズNoise generated by fluctuations in hot water immediately after taking a carbonated spring 生体情報モニタの基線安定フィルタ処理した炭酸泉入浴開始時と出浴時の心電図Electrocardiograms at the start and bathing of carbonated springs with baseline stability filtering of the biological information monitor

符号の説明Explanation of symbols

（イ）入浴開始時
（ロ）出浴時(I) When bathing starts (B) When bathing

Claims (3)

炭酸泉入浴時に、浴槽内に複数設置した非接触電極で心電シグナルを取得する方法。A method of acquiring electrocardiographic signals with multiple non-contact electrodes installed in the bathtub when bathing in carbonated springs. 炭酸泉入浴時に取得した心電シグナルを増幅・デジタル変換し、異常状態を警報する方法。A method of amplifying and digitally converting the electrocardiogram signal acquired when bathing in carbonated springs to alarm abnormal conditions. 炭酸泉入浴時に取得した心電シグナルを、イントラネットやインターネットを経由して医療機関等に転送し、個々人の心電データとして保存・管理する遠隔医療に使う方法。A method used for telemedicine in which ECG signals acquired when bathing in carbonated springs are transferred to a medical institution via an intranet or the Internet, and stored and managed as individual ECG data.
JP2008320234A 2008-11-19 2008-11-19 Acquisition and application of electrocardiographic signal by noncontact electrode in high concentration carbonated spring bath Pending JP2010119814A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012068608A1 (en) * 2010-11-23 2012-05-31 Human Research Institut Für Gesundheitstechnologie Und Präventionsforschung Gmbh Measuring apparatus for the repetitive contactless ascertainment of characteristic intervals between electrical pulses of a beating heart

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10211175A (en) * 1997-01-30 1998-08-11 Sekisui Chem Co Ltd Electrocardiogram/pulse wave measurement bathtub
JPH10277122A (en) * 1997-04-09 1998-10-20 Matsushita Electric Ind Co Ltd Hot water controller and bath equipment using the controller
JP2002269654A (en) * 2001-03-13 2002-09-20 Osaka Gas Co Ltd Bathing safety management system
JP3144082U (en) * 2008-06-04 2008-08-14 有限会社 開商 Carbonated hot spring circulator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10211175A (en) * 1997-01-30 1998-08-11 Sekisui Chem Co Ltd Electrocardiogram/pulse wave measurement bathtub
JPH10277122A (en) * 1997-04-09 1998-10-20 Matsushita Electric Ind Co Ltd Hot water controller and bath equipment using the controller
JP2002269654A (en) * 2001-03-13 2002-09-20 Osaka Gas Co Ltd Bathing safety management system
JP3144082U (en) * 2008-06-04 2008-08-14 有限会社 開商 Carbonated hot spring circulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012068608A1 (en) * 2010-11-23 2012-05-31 Human Research Institut Für Gesundheitstechnologie Und Präventionsforschung Gmbh Measuring apparatus for the repetitive contactless ascertainment of characteristic intervals between electrical pulses of a beating heart

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