JP2003290161A - Apparatus and method for pulse-wave measurement - Google Patents
Apparatus and method for pulse-wave measurementInfo
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- JP2003290161A JP2003290161A JP2002096160A JP2002096160A JP2003290161A JP 2003290161 A JP2003290161 A JP 2003290161A JP 2002096160 A JP2002096160 A JP 2002096160A JP 2002096160 A JP2002096160 A JP 2002096160A JP 2003290161 A JP2003290161 A JP 2003290161A
- Authority
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- Japan
- Prior art keywords
- pulse wave
- blood flow
- skin surface
- wave sensor
- contact
- 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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- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、人体の皮膚面に接
触させて血流の脈波を検出する際に用いて好適な脈波測
定装置及び脈波測定方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulse wave measuring apparatus and a pulse wave measuring method suitable for use in detecting a pulse wave of blood flow by contacting the skin surface of a human body.
【０００２】[0002]
【従来技術及び課題】一般に、健康チェックを行う際の
項目として脈波と血圧がある。現在、血圧の測定方法に
は、大きく分けて、観血式センサを用いる方法と非観血
式センサを用いる方法が知られている。観血式血圧セン
サは、カテーテルやカニューレを用いて測定するもので
ある。一方、非観血血圧センサには、カフを上腕に巻き
つけてコロトコフ音やオシレーションを用いる方法とト
ノメータ法によるものがある。また、脈波の測定には、
容積脈波やインピーダンス法により検出する方法が知ら
れており、容積脈波では光学的手法が用いられるととも
に、インピーダンス法では４電極法が用いられる。さら
に、脈波の評価の方法としては、容積脈波を２回徴分し
て得られる加速度脈波の波形を比較して、血液循環の評
価の指標を得ている。2. Description of the Related Art Generally, pulse waves and blood pressure are items for health check. Currently, blood pressure measuring methods are roughly classified into a method using an open sensor and a method using a non-invasive sensor. The open blood pressure sensor measures using a catheter or a cannula. On the other hand, non-invasive blood pressure sensors include a method using a Korotkoff sound or oscillation with a cuff wrapped around the upper arm, and a method using the tonometer method. Also, to measure the pulse wave,
A method of detecting by a volume pulse wave or an impedance method is known, and an optical method is used for the volume pulse wave and a four-electrode method is used for the impedance method. Further, as a method of evaluating the pulse wave, the waveform of the acceleration pulse wave obtained by dividing the volume pulse wave twice is compared to obtain an index for evaluating the blood circulation.
【０００３】しかし、このような従来における脈波の測
定方法は、いずれも専用システムが必要になるととも
に、測定に際しても煩わしい準備と操作が強いられる。
一方、病院では看護婦が毎日のように患者の脈を測って
いる。したがって、脈波を測る際にも、橈骨動脈からの
力を指で触れるような感覚で多くのことを測定できれ
ば、より手軽に健康チェックを行えるものであり、従来
より、このような測定を実現できる脈波センサ（脈波測
定装置）の実用化が要請されていた。However, each of the conventional pulse wave measuring methods requires a dedicated system and requires complicated preparations and operations for the measurement.
On the other hand, in hospitals, nurses measure the pulse of patients on a daily basis. Therefore, even when measuring the pulse wave, if you can measure many things with the feeling of touching the force from the radial artery with your finger, you can perform a health check more easily. There has been a demand for practical application of a pulse wave sensor (pulse wave measuring device) that can be used.
【０００４】本発明は、このような従来の要請に応えた
ものであり、簡易かつ安価なセンサにより、脈波を的確
に検出できるとともに、一般の人でも容易かつ手軽に測
定することができる脈波測定装置及び脈波測定方法の提
供を目的とする。The present invention has responded to such a conventional demand, and a simple and inexpensive sensor can accurately detect a pulse wave, and an ordinary person can easily and easily measure a pulse wave. An object is to provide a wave measuring device and a pulse wave measuring method.
【０００５】[0005]
【課題を解決するための手段及び実施の形態】本発明に
係る脈波測定装置Ｕは、人体の皮膚面Ｓに接触させて血
流の脈波Ｗを検出する測定装置であって、特に、開口部
２ｓを有するハウジング部２と、このハウジング部２の
内部に配し、かつ受圧面３ｒを開口部２ｓに対向させた
圧電素子部３と、開口部２ｓに進退変位自在に支持さ
れ、かつ先端に半球面状部４ｒを形成して皮膚面Ｓに接
触可能な接触子部４と、この接触子部４が受ける圧力を
受圧面３ｒに伝達する棒状の伝達部５を有する脈波セン
サ１を備えることを特徴とする。この場合、好適な実施
の形態により、脈波センサ１は、筒状に形成した開口部
２ｓに、筒状部４ｃを有する接触子部４を収容するとと
もに、開口部２ｓの先端位置Ｘｏと接触子部４の先端位
置Ｘｓを最適な位置関係に設定する。また、脈波センサ
１を弾性支持する弾性支持部１１を備えるとともに、脈
波センサ１をスライド自在に支持し、脈波センサ１が皮
膚面Ｓに接触した際に、少なくとも当該皮膚面Ｓの上流
側における皮膚面を押圧して血流を停止させ又は停止を
解除可能な血流ストッパ部１２を備えて構成することが
できる。Means and Embodiments for Solving the Problems A pulse wave measuring device U according to the present invention is a measuring device for contacting a skin surface S of a human body to detect a pulse wave W of blood flow. A housing portion 2 having an opening 2s, a piezoelectric element portion 3 disposed inside the housing portion 2 and having a pressure receiving surface 3r opposed to the opening 2s, and supported in the opening 2s so as to be movable back and forth. Pulse wave sensor 1 having hemispherical portion 4r formed at the tip and having a contactor portion 4 capable of contacting skin surface S, and rod-shaped transmitting portion 5 for transmitting the pressure received by contactor portion 4 to pressure receiving surface 3r. It is characterized by including. In this case, according to the preferred embodiment, the pulse wave sensor 1 accommodates the contactor portion 4 having the tubular portion 4c in the tubular opening 2s, and contacts the tip position Xo of the opening 2s. The tip position Xs of the child portion 4 is set to an optimum positional relationship. In addition, the pulse wave sensor 1 is elastically supported, and the pulse wave sensor 1 is slidably supported. When the pulse wave sensor 1 comes into contact with the skin surface S, at least the upstream of the skin surface S The blood flow stopper portion 12 that can stop or stop the blood flow by pressing the skin surface on the side can be configured.
【０００６】一方、本発明に係る脈波測定方法は、血流
ストッパ部１２により人体の皮膚面を押圧して血流を停
止させ、所定期間Ｔｉの経過後に、停止を解除するとと
もに、脈波センサ１を血流を停させた皮膚面Ｓに接触さ
せることにより、血流を停止させた以降における脈波Ｗ
の波形を測定するようにしたことを特徴とする。On the other hand, in the pulse wave measuring method according to the present invention, the blood flow stopper portion 12 presses the skin surface of the human body to stop the blood flow, and after the lapse of a predetermined period Ti, the stop is released and the pulse wave is measured. The pulse wave W after the blood flow is stopped by bringing the sensor 1 into contact with the skin surface S where the blood flow is stopped
It is characterized in that the waveform of is measured.
【０００７】[0007]
【実施例】次に、本発明に係る好適な実施例を挙げ、図
面に基づき詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments according to the present invention will be described in detail with reference to the drawings.
【０００８】まず、脈波センサ１の構成について、図１
及び図２を参照して説明する。First, the configuration of the pulse wave sensor 1 is shown in FIG.
2 and FIG. 2.
【０００９】脈波センサ１は、ハウジング部２，圧電素
子部３，接触子部４及び伝達部５を備えて構成する。ハ
ウジング部２は、アルミニウム素材等により円形のケー
ス状に一体形成するとともに、一端面には、円筒状の開
口部２ｓを形成する。そして、ハウジング部２の内部に
圧電素子部３を配設する。圧電素子部３は、耐久性や応
答速度に優れ、小さな変位でも大きな電圧が得られるバ
イモルフ型圧電素子２１を用いる。このバイモルフ型圧
電素子２１は、一対の圧電板２１ａ，２１ｂを、この圧
電板２１ａ，２１ｂよりも大径に形成したメタルプレー
ト２１ｍの両面に貼着して構成する。圧電素子部３をハ
ウジング部２の内部に配設する際には、図２に示すよう
に、メタルプレート２１ｍ及び圧電板２１ａ，２１ｂの
周面を接着剤２２により、ハウジング部２の内面に固定
する。これにより、一方の圧電板２１ａの端面は受圧面
３ｒとなり、開口部２ｓに対向する。なお、他方の圧電
板２１ａの端面とハウジング部２の内面間には一定の隙
間を設ける。The pulse wave sensor 1 comprises a housing portion 2, a piezoelectric element portion 3, a contact portion 4 and a transmission portion 5. The housing portion 2 is integrally formed in a circular case shape with an aluminum material or the like, and a cylindrical opening portion 2s is formed on one end surface thereof. Then, the piezoelectric element portion 3 is arranged inside the housing portion 2. The piezoelectric element section 3 uses a bimorph type piezoelectric element 21 which has excellent durability and response speed and can obtain a large voltage even with a small displacement. The bimorph type piezoelectric element 21 is formed by adhering a pair of piezoelectric plates 21a and 21b to both surfaces of a metal plate 21m having a diameter larger than those of the piezoelectric plates 21a and 21b. When disposing the piezoelectric element portion 3 inside the housing portion 2, as shown in FIG. 2, the peripheral surfaces of the metal plate 21m and the piezoelectric plates 21a and 21b are fixed to the inner surface of the housing portion 2 with an adhesive 22. To do. As a result, the end surface of the one piezoelectric plate 21a becomes the pressure receiving surface 3r and faces the opening 2s. A fixed gap is provided between the end surface of the other piezoelectric plate 21a and the inner surface of the housing portion 2.
【００１０】また、開口部２ｓには、接触子部４を収容
する。この接触子部４は、指で触れるような感覚やセン
サの軽量化を考慮してプラスチック素材により一体形成
する。接触子部４は、筒状部４ｃとこの筒状部４ｃの先
端に設けた半球面状部４ｒを有し、筒状部４ｃと開口部
２ｓがスライド自在となる。そして、半球面状部４ｒの
内面中央部と一方の圧電板２１ａの端面（受圧面３ｒ）
の中央部間には、木質素材で形成した棒状の伝達部５の
両端をそれぞれ接着剤等により固着する。これにより、
接触子部４の受ける圧力（変位）が受圧面３ｒに効率的
に伝達される。この際、接触子部４の先端位置Ｘｓと開
口部２ｓの先端位置Ｘｏは、最適な位置関係に設定す
る。例えば、接触子部４の先端位置Ｘｓを、図１に示す
ように、開口部２ｓの先端位置ＸｏよりもＬｓだけ突出
させることができ、このＬｓは、１〔ｍｍ〕前後に設定
できる。また、必要により接触子部４の先端位置Ｘｓと
開口部２ｓの先端位置Ｘｏは一致させてもよい。なお、
図２中、２３ｐは正側導出線、２３ｎは負側導出線を示
す。以上の構成部品において、接触子部４は、内径９．
６〔ｍｍ〕，厚さ０．１〔ｍｍ〕，質量２２０〔ｇ〕、
伝達部５は、比重５８０〔ｋｇ／ｍ2〕，長さ９．２
〔ｍｍ〕，直径２．３〔ｍｍ〕のものを用いた。A contact portion 4 is housed in the opening 2s. The contactor portion 4 is integrally formed of a plastic material in consideration of the feeling of touching with a finger and the weight saving of the sensor. The contactor portion 4 has a tubular portion 4c and a hemispherical portion 4r provided at the tip of the tubular portion 4c, and the tubular portion 4c and the opening 2s are slidable. Then, the central portion of the inner surface of the hemispherical portion 4r and the end surface of the one piezoelectric plate 21a (pressure receiving surface 3r).
Both ends of a rod-shaped transmission portion 5 formed of a wood material are fixed between the central portions of the above with an adhesive or the like. This allows
The pressure (displacement) received by the contactor portion 4 is efficiently transmitted to the pressure receiving surface 3r. At this time, the tip position Xs of the contactor portion 4 and the tip position Xo of the opening 2s are set to an optimum positional relationship. For example, as shown in FIG. 1, the tip position Xs of the contactor portion 4 can be made to protrude from the tip position Xo of the opening 2s by Ls, and this Ls can be set to about 1 [mm]. If necessary, the tip position Xs of the contactor portion 4 and the tip position Xo of the opening 2s may be matched. In addition,
In FIG. 2, 23p indicates a positive lead wire and 23n indicates a negative lead wire. In the above components, the contactor portion 4 has an inner diameter of 9.
6 [mm], thickness 0.1 [mm], mass 220 [g],
The transmission part 5 has a specific gravity of 580 [kg / m 2 ] and a length of 9.2.
[Mm] and diameter 2.3 [mm] were used.
【００１１】図３は、このように構成した脈波センサ１
の周波数特性を示すとともに、図４は、図３の周波数特
性を測定した測定回路（ブロック回路）を示す。図４に
おいて、３１は発振器、３２は周波数カウンタ、３３は
骨導振動子、３４は加速度型振動ピックアップ、３５，
３６はチャージアンプ、３７は電圧計、３８はＦＥＴア
ナライザを示す。脈波センサ１に対する周波数特性の測
定は、骨導振動子３３に、超小型の加速度型振動ピック
アップ３４と面積２〔ｃｍ2〕の樹脂製アタッチメント
を組み合わせて貼付け、その上に脈波センサ１を固定し
た。そして、発振器３１の周波数を変化させ、ＦＥＴア
ナライザ３８によって減衰量を測定した。測定の際に、
脈波センサ１に付与される加速度は１〔Ｇ〕に設定し、
圧電板２１ａ…からの出力電荷をチャージアンプ３６に
より電圧に変換した。得られた周波数特性は、図３に示
すように、共振周波数は８０Ｈｚ，共振の鋭さはＱ＝
３．２，加速度感度は１２００〔ＰＣ／Ｇ〕であった。FIG. 3 shows a pulse wave sensor 1 constructed as described above.
4 shows the frequency characteristic of FIG. 3 and FIG. 4 shows a measurement circuit (block circuit) for measuring the frequency characteristic of FIG. In FIG. 4, 31 is an oscillator, 32 is a frequency counter, 33 is a bone conduction oscillator, 34 is an acceleration type vibration pickup, 35,
36 is a charge amplifier, 37 is a voltmeter, and 38 is a FET analyzer. To measure the frequency characteristic of the pulse wave sensor 1, the bone conduction oscillator 33 is attached with a combination of a microminiature acceleration type vibration pickup 34 and a resin attachment having an area of 2 [cm 2 ] and the pulse wave sensor 1 is attached thereon. Fixed Then, the frequency of the oscillator 31 was changed, and the attenuation amount was measured by the FET analyzer 38. When measuring,
The acceleration applied to the pulse wave sensor 1 is set to 1 [G],
Output charges from the piezoelectric plates 21a ... Are converted into a voltage by the charge amplifier 36. As shown in FIG. 3, the obtained frequency characteristics have a resonance frequency of 80 Hz and a resonance sharpness of Q =
3.2, the acceleration sensitivity was 1200 [PC / G].
【００１２】次に、脈波センサ１を用いた脈波の測定方
法及び測定結果について、図５及び図６を参照して説明
する。Next, a method of measuring a pulse wave using the pulse wave sensor 1 and a measurement result will be described with reference to FIGS. 5 and 6.
【００１３】脈波の測定は、極めて簡単であり、測定者
は手で脈波センサ１を持ち、被測定者における橈骨動脈
上の皮膚面Ｓに、そのまま脈波センサ１の接触子部４を
当接させればよい。この場合、接触子部４は、プラスチ
ック素材により形成した半球面状部４ｒを有するため、
皮膚面Ｓを指で触れるような感覚となる。図５（ａ）
は、橈骨動脈からの圧力を測定した脈波Ｗの波形を示す
とともに、図５（ｂ）はそのスペクトラムを示す。図５
（ａ），（ｂ）は、代表的な一例を示すが、複数例を測
定した結果、多少の違いはあるものの、同じような波形
が見られた。また、複数例のスペクトラムを比較する
と、第１高調波から徐々に下がっていくものや第３高調
波まであまり変化が見られずにそこから直線的に下がっ
ていくものなどの違いが見られた。The measurement of the pulse wave is extremely simple. The measurer holds the pulse wave sensor 1 by hand, and the contact portion 4 of the pulse wave sensor 1 is directly attached to the skin surface S on the radial artery of the subject. It is sufficient to bring them into contact. In this case, since the contactor portion 4 has the hemispherical portion 4r formed of a plastic material,
It is as if the skin surface S were touched with a finger. Figure 5 (a)
Shows the waveform of the pulse wave W obtained by measuring the pressure from the radial artery, and FIG. 5B shows the spectrum thereof. Figure 5
(A) and (b) show a typical example, but as a result of measuring a plurality of examples, similar waveforms were seen although there were some differences. In addition, when comparing the spectra of multiple examples, there were differences such as those gradually decreasing from the first harmonic and those decreasing linearly from the third harmonic without much change. .
【００１４】一方、図６（ａ），（ｂ），（ｃ）は、血
圧計を上腕に巻き、血圧を測定した状態で測定した波形
を示す。即ち、測定時に、血圧計（血流ストッパ部１２
に対応）を用いることにより皮膚面を押圧して血流を停
止させ、所定期間Ｔｉの経過後に、停止を解除するとと
もに、脈波センサ１を、押圧された皮膚面の下流側にお
ける皮膚面Ｓに当接させることにより、血流を停止させ
た以降における脈波Ｗの波形を測定したものである。こ
の結果、立ち上がりにおいて直線的に増えていくもの
や、自然対数関数のような増加傾向を示すものがある。
また、その立ち上がりの時間にも個人差が認められた。
このように、脈波センサ１を用いて得られる図６
（ａ），（ｂ），（ｃ）に示す脈波Ｗの波形は、血管の
硬さなどに関係することが考えられ、これらのパターン
の相違から健康度を把握することができると考えられ
る。On the other hand, FIGS. 6 (a), 6 (b) and 6 (c) show waveforms measured in a state in which the blood pressure is measured with the sphygmomanometer wrapped around the upper arm. That is, at the time of measurement, the blood pressure monitor (the blood flow stopper 12
Is used to stop the blood flow and stop the blood flow after the lapse of a predetermined period Ti, and the pulse wave sensor 1 is used to move the skin surface S on the downstream side of the pressed skin surface. By measuring the waveform of the pulse wave W after the blood flow is stopped by bringing the pulse wave W into contact with. As a result, there are some that increase linearly at the rising edge and some that show an increasing tendency like a natural logarithmic function.
Also, there were individual differences in the rise time.
As shown in FIG. 6 obtained by using the pulse wave sensor 1 in this way.
The waveforms of the pulse wave W shown in (a), (b), and (c) are considered to be related to the hardness of blood vessels, and it is considered that the degree of health can be grasped from the difference in these patterns. .
【００１５】他方、図７及び図８は、脈波センサ１を備
える脈波測定装置Ｕを示す。脈波測定装置Ｕは、基部５
１を備え、この基部５１の上面には被測定者の腕部Ａを
載せて位置決めするガイド部５２を設けるとともに、基
部５１の一端寄りには昇降装置５３を設置する。昇降装
置５３は、水平に突出した第一アーム部５３ａと第二ア
ーム部５３ｂを備え、第一アーム部５３ａと第二アーム
部５３ｂは、それぞれ独立して昇降させることができ
る。On the other hand, FIGS. 7 and 8 show a pulse wave measuring device U provided with the pulse wave sensor 1. The pulse wave measuring device U has a base 5
1, a guide portion 52 for mounting and positioning the arm A of the person to be measured is provided on the upper surface of the base portion 51, and an elevating device 53 is installed near one end of the base portion 51. The lifting device 53 includes a horizontally projecting first arm portion 53a and a second arm portion 53b, and the first arm portion 53a and the second arm portion 53b can be independently raised and lowered.
【００１６】第一アーム部５３ａの下面には、脈波セン
サ１を弾性支持する弾性支持部１１を取付ける。弾性支
持部１１は、円柱状に形成した上側に位置する固定部１
１ｃと、円柱状に形成した下側に位置する可動部１１ｍ
を有し、固定部１１ｃと可動部１１ｍは、コイルスプリ
ング１１ｓを介して連結する。そして、固定部１１ｃの
上端を第一アーム部５３ａの下面に固定するとともに、
可動部１１ｍの下面に、脈波センサ１を固定する。An elastic support portion 11 for elastically supporting the pulse wave sensor 1 is attached to the lower surface of the first arm portion 53a. The elastic support portion 11 is a fixed portion 1 formed in a cylindrical shape and located on the upper side.
1c and a movable portion 11m formed in a cylindrical shape and located on the lower side
The fixed portion 11c and the movable portion 11m are connected via a coil spring 11s. Then, while fixing the upper end of the fixed portion 11c to the lower surface of the first arm portion 53a,
The pulse wave sensor 1 is fixed to the lower surface of the movable portion 11m.
【００１７】また、第二アーム部５３ｂには、脈波セン
サ１をスライド自在に支持し、脈波センサ１が皮膚面Ｓ
に接触した際に、少なくとも当該皮膚面Ｓの上流側にお
ける皮膚面を押圧して血流を停止させ又は停止を解除可
能な血流ストッパ部１２を設ける。血流ストッパ部１２
は、円筒部１２ｃを備え、この円筒部１２ｃの外周面を
第二アーム部５３ｂに固定するとともに、円筒部１２ｃ
の内部に、上述した弾性支持部１１を挿通させる。そし
て、円筒部１２ｃの下端に、１８０〔°〕対向する一対
のストッパ片１２ｓ，１２ｓを下方に突出形成する。こ
の場合、各ストッパ片１２ｓ，１２ｓは、脈波センサ１
に対してそれぞれ上流側と下流側に配される。Further, the pulse wave sensor 1 is slidably supported on the second arm portion 53b, and the pulse wave sensor 1 is attached to the skin surface S.
A blood flow stopper 12 is provided that can stop or cancel the blood flow by pressing at least the skin surface on the upstream side of the skin surface S when the blood flow is touched. Blood flow stopper 12
Includes a cylindrical portion 12c, and the outer peripheral surface of the cylindrical portion 12c is fixed to the second arm portion 53b.
The elastic supporting portion 11 described above is inserted into the inside of the. Then, a pair of stopper pieces 12s, 12s facing each other by 180 ° are formed on the lower end of the cylindrical portion 12c so as to project downward. In this case, each of the stopper pieces 12s, 12s is the pulse wave sensor 1
Are arranged on the upstream side and the downstream side, respectively.
【００１８】このような脈波測定装置Ｕを用いれば、ガ
イド部５２に腕部Ａを載せて位置決めした後、不図示の
第一スイッチをオンにすれば、最初に第一アーム部５３
ａが設定高さだけ下降して停止し、脈波センサ１が皮膚
面Ｓに圧接する。この際、腕部Ａの太さによる脈波セン
サ１の圧接高さの相違は、コイルスプリング１１ｓによ
り吸収されるとともに、圧接力のバラツキも低減され
る。これにより、図５に示す脈波Ｗを測定することがで
きる。With such a pulse wave measuring device U, if the arm A is placed on the guide 52 and positioned, and then the first switch (not shown) is turned on, the first arm 53 is first provided.
a falls by the set height and stops, and the pulse wave sensor 1 comes into pressure contact with the skin surface S. At this time, the difference in the pressure contact height of the pulse wave sensor 1 due to the thickness of the arm portion A is absorbed by the coil spring 11s, and the variation in the pressure contact force is also reduced. Thereby, the pulse wave W shown in FIG. 5 can be measured.
【００１９】一方、この状態で、不図示の第二スイッチ
をオンにすれば、第二アーム部５３ｂが下降し、血流ス
トッパ部１２におけるストッパ片１２ｓ，１２ｓが皮膚
面を押圧する。この際、第二アーム部５３ｂの下降を停
止させるには、例えば、第二アーム部５３ｂに付与され
る負荷圧を圧力センサ等により検出し、設定圧に達した
ら停止させる制御を行えばよい。これにより、脈波セン
サ１に対して上流側と下流側で血流が停止せしめられ
る。そして、所定時間Ｔｉの経過後、第二アーム部５３
ｂを上昇させれば、図６に示す脈波Ｗを測定することが
できる。On the other hand, if a second switch (not shown) is turned on in this state, the second arm portion 53b descends and the stopper pieces 12s, 12s of the blood flow stopper portion 12 press the skin surface. At this time, in order to stop the lowering of the second arm portion 53b, for example, the load pressure applied to the second arm portion 53b may be detected by a pressure sensor or the like, and control may be performed to stop when the set pressure is reached. As a result, the blood flow is stopped on the upstream side and the downstream side of the pulse wave sensor 1. Then, after the elapse of the predetermined time Ti, the second arm portion 53
If b is increased, the pulse wave W shown in FIG. 6 can be measured.
【００２０】ところで、このような本実施例に係る脈波
測定装置Ｕは、図９に示す健診装置Ｍの一部として利用
できる。この健診装置Ｍは、脈波の他、疲労度，血圧，
骨密度，体脂肪，体重等を集中的に測定できるものであ
り、測定用イス６０を備える。この測定用イス６０は、
被測定者が着座できる着座部６１を備えるとともに、こ
の着座部６１の後側に背凭れ部６２を、前側にフットレ
スト６３を、左側にアームレスト６４を、右側にアーム
レスト６５をそれぞれ備える。以上により、イス本体部
６６を構成し、このイス本体部６６は、ベース部６７の
上面に設置する。一方、左側のアームレスト６４の上面
には、センシングユニット６８を付設し、このセンシン
グユニット６８に脈波測定装置Ｕを配設する。センシン
グユニット６８は、背凭れ部６２に対向する面に、開口
部を有し、着座部６１に座った被測定者の腕部Ａを挿入
できる。他方、右側のアームレスト６５には、タッチパ
ネル６９を付設したディスプレイ７０を配設するととも
に、このアームレスト６５の前面パネルを利用して、上
からコイン投入口７１，コイン返却口７２，記録シート
Ｐを排出する記録シート排出口７３を配設する。さら
に、背凭れ部６２の上端には、ヘッドレスト形に構成し
た疲労度を測定するための疲労度用検出部７４を配設す
る。By the way, the pulse wave measuring apparatus U according to the present embodiment can be used as a part of the medical examination apparatus M shown in FIG. This health checkup device M uses the pulse wave, fatigue level, blood pressure,
Bone density, body fat, body weight, etc. can be intensively measured, and a measuring chair 60 is provided. This measuring chair 60
A seat portion 61 on which the person to be measured can sit is provided, and a backrest portion 62 is provided on the rear side of the seat portion 61, a footrest 63 is provided on the front side, an armrest 64 is provided on the left side, and an armrest 65 is provided on the right side. As described above, the chair main body portion 66 is configured, and the chair main body portion 66 is installed on the upper surface of the base portion 67. On the other hand, a sensing unit 68 is attached to the upper surface of the left armrest 64, and the pulse wave measuring device U is arranged in this sensing unit 68. The sensing unit 68 has an opening on the surface facing the backrest portion 62, and the arm portion A of the measurement subject sitting on the seating portion 61 can be inserted therein. On the other hand, the right armrest 65 is provided with a display 70 provided with a touch panel 69, and the front panel of the armrest 65 is used to eject a coin insertion slot 71, a coin return slot 72, and a recording sheet P from above. The recording sheet discharge port 73 is provided. Further, at the upper end of the backrest portion 62, a headrest-shaped fatigue degree detecting portion 74 for measuring the fatigue degree is provided.
【００２１】以上、実施例について説明したが、本発明
はこのような実施例に限定されるものてはなく、細部の
構成，形状，部品，材料，手法等において、本発明の要
旨を逸脱しない範囲で任意に変更，追加，削除すること
ができる。例えば、半球面状部４ｒは、正確な球面を意
味するものではなく、丸みを帯びた程度の形状を全て含
む概念である。Although the embodiments have been described above, the present invention is not limited to such embodiments, and the details, structures, shapes, parts, materials, methods, etc. do not depart from the gist of the present invention. The range can be changed, added, or deleted arbitrarily. For example, the hemispherical portion 4r does not mean an accurate spherical surface, but is a concept including all rounded shapes.
【００２２】[0022]
【発明の効果】このように、本発明に係る脈波測定装置
は、開口部を有するハウジング部と、このハウジング部
の内部に配し、かつ受圧面を開口部に対向させた圧電素
子部と、開口部に進退変位自在に支持され、かつ先端に
半球面状部を形成して皮膚面に接触可能な接触子部と、
この接触子部が受ける圧力を受圧面に伝達する棒状の伝
達部を有する脈波センサを備えるため、簡易かつ安価な
センサにより、脈波を的確に検出できるとともに、一般
の人でも容易かつ手軽に測定することができるという顕
著な効果を奏する。As described above, the pulse wave measuring device according to the present invention includes the housing portion having the opening portion, and the piezoelectric element portion disposed inside the housing portion and having the pressure receiving surface opposed to the opening portion. A contactor portion that is supported in the opening portion so as to be movable back and forth, and that has a hemispherical portion formed at the tip and is capable of contacting the skin surface
Since the pulse wave sensor having the rod-shaped transmission portion that transmits the pressure received by the contact portion to the pressure receiving surface is provided, the pulse wave can be accurately detected by a simple and inexpensive sensor, and ordinary people can easily and easily It has a remarkable effect that it can be measured.
【００２３】また、本発明に係る脈波測定方法は、血流
ストッパ部により人体の皮膚面を押圧して血流を停止さ
せ、所定期間の経過後に、停止を解除するとともに、脈
波センサを血流を停止させた皮膚面に接触させることに
より、血流を停止させた以降における脈波の波形を測定
するようにしたため、得られる波形のパターンの個人差
から健康度を把握することが可能になるという顕著な効
果を奏する。In the pulse wave measuring method according to the present invention, the blood flow stopper portion presses the skin surface of the human body to stop the blood flow, and after the lapse of a predetermined period, the stop is released and the pulse wave sensor is used. By measuring the waveform of the pulse wave after stopping the blood flow by contacting the skin surface where the blood flow has been stopped, it is possible to grasp the degree of health from the individual difference in the obtained waveform pattern. There is a remarkable effect of becoming.
【図１】本発明の好適な実施例に係る脈波測定装置に備
える脈波センサの縦断正面構成図、FIG. 1 is a vertical sectional front view of a pulse wave sensor included in a pulse wave measuring apparatus according to a preferred embodiment of the present invention,
【図２】同脈波センサに用いる圧電素子部の縦断正面構
成図、FIG. 2 is a vertical sectional front view of a piezoelectric element portion used in the pulse wave sensor,
【図３】同脈波センサの周波数特性図、FIG. 3 is a frequency characteristic diagram of the pulse wave sensor,
【図４】図３に示す周波数特性を測定する測定回路のブ
ロック回路図、4 is a block circuit diagram of a measurement circuit for measuring the frequency characteristic shown in FIG.
【図５】同脈波センサにより測定した脈波の波形図、FIG. 5 is a waveform diagram of a pulse wave measured by the pulse wave sensor,
【図６】本発明の好適な実施例に係る脈波測定方法によ
り測定した脈波の波形図、FIG. 6 is a waveform diagram of a pulse wave measured by a pulse wave measuring method according to a preferred embodiment of the present invention,
【図７】同脈波センサを備える脈波測定装置の側面図、FIG. 7 is a side view of a pulse wave measuring device including the pulse wave sensor,
【図８】同脈波測定装置の一部を拡大した一部断面正面
図、FIG. 8 is a partially sectional front view showing an enlarged part of the pulse wave measuring device;
【図９】同脈波測定装置を備える測定用イスの外観斜視
図、FIG. 9 is an external perspective view of a measurement chair including the pulse wave measuring device;
１ 脈波センサ ２ ハウジング部 ２ｓ 開口部 ３ 圧電素子部 ３ｒ 受圧面 ４ 接触子部 ４ｒ 半球面状部 ４ｃ 筒状部 ５ 伝達部 １１ 弾性支持部 １２ 血流ストッパ部 Ｕ 脈波測定装置 Ｓ 皮膚面 Ｗ 脈波 Ｘｏ 先端位置 Ｘｓ 先端位置 Ｔｉ 所定期間 1 pulse wave sensor 2 housing 2s opening 3 Piezoelectric element 3r Pressure receiving surface 4 Contact part 4r hemispherical part 4c tubular part 5 transmitter 11 Elastic support 12 Blood flow stopper U pulse wave measuring device S skin surface W pulse wave Xo tip position Xs tip position Ti predetermined period
Claims (5)
検出する脈波センサにおいて、開口部を有するハウジン
グ部と、このハウジング部の内部に配し、かつ受圧面を
前記開口部に対向させた圧電素子部と、前記開口部に進
退変位自在に支持され、かつ先端に半球面状部を形成し
て前記皮膚面に接触可能な接触子部と、この接触子部が
受ける圧力を前記受圧面に伝達する棒状の伝達部を有す
る脈波センサを備えることを特徴とする脈波測定装置。1. A pulse wave sensor for detecting a pulse wave of blood flow in contact with a skin surface of a human body, a housing portion having an opening, and a pressure receiving surface disposed inside the housing portion and having the pressure receiving surface. A piezoelectric element portion opposed to the contact portion, a contact portion that is supported in the opening portion so as to be able to move back and forth, and has a hemispherical portion formed at the tip to contact the skin surface, and the pressure received by the contact portion. A pulse wave measuring device comprising: a pulse wave sensor having a rod-shaped transmitting portion for transmitting the pressure to the pressure receiving surface.
開口部に、筒状部を有する前記接触子部を収容するとと
もに、前記開口部の先端位置と前記接触子部の先端位置
を最適な位置関係に設定することを特徴とする請求項１
記載の脈波測定装置。2. The pulse wave sensor accommodates the contactor portion having a tubular portion in the opening portion formed in a tubular shape, and defines a tip position of the opening portion and a tip position of the contactor portion. 2. The optimum positional relationship is set.
The pulse wave measuring device described.
部を備えることを特徴とする請求項１記載の脈波測定装
置。3. The pulse wave measuring device according to claim 1, further comprising an elastic supporting portion that elastically supports the pulse wave sensor.
し、前記脈波センサが前記皮膚面に接触した際に、少な
くとも当該皮膚面の上流側における皮膚面を押圧して血
流を停止させ又は停止を解除可能な血流ストッパ部を備
えることを特徴とする請求項１記載の脈波測定装置。4. The pulse wave sensor is slidably supported, and when the pulse wave sensor contacts the skin surface, at least the skin surface upstream of the skin surface is pressed to stop blood flow, or The pulse wave measuring device according to claim 1, further comprising a blood flow stopper unit that can be stopped.
圧して血流を停止させ、所定期間の経過後に、前記停止
を解除するとともに、脈波センサを血流を停止させた皮
膚面に接触させることにより、血流を停止させた以降に
おける脈波の波形を測定することを特徴とする脈波測定
方法。5. The blood flow stopper portion presses the skin surface of the human body to stop the blood flow, and after a lapse of a predetermined period, the stop is released and the pulse wave sensor is applied to the skin surface where the blood flow is stopped. A pulse wave measuring method characterized by measuring the waveform of a pulse wave after the blood flow is stopped by bringing them into contact with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002096160A JP2003290161A (en) | 2002-03-29 | 2002-03-29 | Apparatus and method for pulse-wave measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002096160A JP2003290161A (en) | 2002-03-29 | 2002-03-29 | Apparatus and method for pulse-wave measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003290161A true JP2003290161A (en) | 2003-10-14 |
Family
ID=29239347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002096160A Pending JP2003290161A (en) | 2002-03-29 | 2002-03-29 | Apparatus and method for pulse-wave measurement |
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| Country | Link |
|---|---|
| JP (1) | JP2003290161A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019141343A (en) * | 2018-02-21 | 2019-08-29 | ニプロ株式会社 | Sensor module fixing device |
| CN110584634A (en) * | 2019-10-30 | 2019-12-20 | 广州金智医疗器械有限公司 | Human blood pressure monitoring alarm device under motion state |
| JP2020120794A (en) * | 2019-01-29 | 2020-08-13 | 京セラ株式会社 | Electronic apparatus |
| US10750962B2 (en) | 2014-12-18 | 2020-08-25 | Lg Innotek Co., Ltd. | Pulse measurement device and computing device using same |
-
2002
- 2002-03-29 JP JP2002096160A patent/JP2003290161A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10750962B2 (en) | 2014-12-18 | 2020-08-25 | Lg Innotek Co., Ltd. | Pulse measurement device and computing device using same |
| JP2019141343A (en) * | 2018-02-21 | 2019-08-29 | ニプロ株式会社 | Sensor module fixing device |
| JP7053990B2 (en) | 2018-02-21 | 2022-04-13 | ニプロ株式会社 | Sensor module fixing device |
| JP2020120794A (en) * | 2019-01-29 | 2020-08-13 | 京セラ株式会社 | Electronic apparatus |
| CN110584634A (en) * | 2019-10-30 | 2019-12-20 | 广州金智医疗器械有限公司 | Human blood pressure monitoring alarm device under motion state |
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