JP2000217796A - Circulatory function diagnostic device - Google Patents
Circulatory function diagnostic deviceInfo
- Publication number
- JP2000217796A JP2000217796A JP11025829A JP2582999A JP2000217796A JP 2000217796 A JP2000217796 A JP 2000217796A JP 11025829 A JP11025829 A JP 11025829A JP 2582999 A JP2582999 A JP 2582999A JP 2000217796 A JP2000217796 A JP 2000217796A
- Authority
- JP
- Japan
- Prior art keywords
- blood pressure
- pulse wave
- circulatory
- circulatory function
- function
- 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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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は人体の血液循環系の
機能を診断する循環機能診断装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulatory function diagnostic apparatus for diagnosing the function of the blood circulation system of the human body.
【０００２】[0002]
【従来の技術】血液の流動状態を調べることは、被験者
の心臓や血管などの血液循環系の生理状態をつかみその
結果に基づいて適切な運動の指導や成人病の予防のアド
バイスを行う上で有効であり、広く行われている。特に
血圧測定は、その値が高い場合末梢血管の状態の変化に
より心臓に過大な負荷がかかっていることを示し、常時
高い値を示す場合は現在特に異常が無くとも近い将来に
心臓や血管に何らかの障害を発生させる可能性があるた
め注意が必要で、そのような状態にある人は定期的に血
圧を測定して値の変化を監視し、その結果に基づいて血
圧低下のための指導や治療が行われる。2. Description of the Related Art Investigation of the state of blood flow is necessary for grasping the physiological state of the blood circulatory system such as the heart and blood vessels of a subject and providing appropriate exercise guidance and advice for preventing adult diseases based on the results. Effective and widely practiced. In particular, blood pressure measurement indicates that if the value is high, the heart is overloaded due to changes in the state of peripheral blood vessels, and if the value is constantly high, the heart or blood vessels will be imposed on the heart or blood vessels in the near future even if there are no abnormalities at present. Be cautious because it may cause some kind of disability, and people in such a condition regularly measure blood pressure and monitor changes in values, and based on the results, provide guidance for lowering blood pressure or Treatment is given.
【０００３】このような重要な血圧を測定する測定法と
して、血管に圧力センサーを挿入し直接血管内の圧力を
測定する直接法などの侵襲的な方法もあるが、非侵襲的
に簡便に測定できるコロトコロフ音法やオシロメトリッ
ク法を用いた血圧計を用いて計測する方法が一般的であ
り、家庭でも簡便に計測できる自動血圧計が広く普及し
ている。これは、四肢の一部にカフを巻き付けカフに圧
力を加えることによりカフを巻き付けた部位より末梢側
の血流を阻害し、カフ圧と被験者の血圧との関係により
発生、変化する衝撃音やカフ圧の微小な変動を検出して
被験者の収縮期血圧や拡張期血圧、もしくは平均血圧な
どの血圧値を算出し表示している。As an important measuring method for measuring blood pressure, there is an invasive method such as a direct method in which a pressure sensor is inserted into a blood vessel and a pressure in the blood vessel is directly measured. Generally, a method of measuring using a blood pressure monitor using the Korotokolov sound method or the oscillometric method is available, and an automatic blood pressure monitor that can easily measure at home is widely used. This is because a cuff is wrapped around a part of the limb and pressure is applied to the cuff to impede blood flow on the peripheral side from the part where the cuff is wrapped. A minute change in the cuff pressure is detected, and a blood pressure value such as a systolic blood pressure, a diastolic blood pressure, or an average blood pressure of the subject is calculated and displayed.
【０００４】一方、血液の流動状態を示す血圧以外の指
標として脈波も従来から用いられている。これは、心臓
の拍動により発生し血管を通じて末梢まで伝えられる圧
力波を検出するもので、侵襲的な方法と非侵襲的な方法
があるが、非侵襲的な方法として動脈血管から表皮に伝
わる振動を圧力波として直接検出する圧脈波と、血液の
光吸収特性を利用し圧力波により血管の断面積が変化し
て生じた血液量の増減を光の吸収量の変化により検出す
る光電脈波があり、測定の簡便さから光電脈波が一般に
用いられ、心臓の動作や末梢の状態など様々な診断に応
用されている。On the other hand, a pulse wave has been conventionally used as an index other than the blood pressure, which indicates the flow state of blood. It detects pressure waves that are generated by the pulsation of the heart and transmitted through blood vessels to the periphery.There are two types of invasive and non-invasive methods, but they are transmitted from arterial vessels to the epidermis as non-invasive methods. A pressure pulse wave that directly detects vibration as a pressure wave, and a photoelectric pulse that uses the light absorption characteristics of blood to detect the increase or decrease in blood volume caused by a change in the cross-sectional area of a blood vessel due to the pressure wave, based on the change in light absorption. There is a wave, and a photoplethysmogram is generally used because of the simplicity of the measurement, and is applied to various diagnoses such as a heart operation and a peripheral state.
【０００５】しかし、この脈波による診断は波形の特徴
が微細であるため診断に用いるには熟練を要した。この
問題を解決するために脈波を２次微分した加速度脈波を
用い、脈波の微細な変化を大きな波形変化で表現してこ
の波形を細かく分析することにより簡便に血液循環系の
状態を診断できるようになっている。[0005] However, the diagnosis based on the pulse wave requires skill in using it for diagnosis because the characteristics of the waveform are minute. In order to solve this problem, the state of the blood circulatory system can be easily determined by expressing the minute change of the pulse wave by a large waveform change and analyzing the waveform finely by using the acceleration pulse wave obtained by secondarily differentiating the pulse wave. The diagnosis can be made.
【０００６】図８に脈波波形とその２次微分である加速
度脈波波形の１例を同時に採取した心電図と共に示す。
この波形のａからｅまでの５つのピークの特徴から図９
に示すようなＡ〜Ｇの７種類に分類し、それぞれ以下の
ような診断が行われている。ａ，ｂ，ｃ，ｄ，ｅの５つ
のピークの位置をそれぞれｈａ，ｈｂ，ｈｃ，ｈｄ，ｈ
ｅで表すと、Ａはｈｃ＞０かつｈｂ＜ｈｄとなる場合で
あり通常若い人に見られる血液循環が良い状態にあるこ
とを示す波形、Ｂはｈｃ＜０かつｈｂ＜ｈｄとなる場合
で加齢によって血液循環が悪くなる過程の中で見られ、
まだ良い状態にある波形、Ｃはｈｂ＜ｈｃかつｈｂ≒ｈ
ｄとなる場合であり血液循環が少し悪くなって左心の負
担が大きくなったと考えられる時に見られる波形で、ス
ポーツ心臓でもしばしば認められる、Ｄはｈｂ≒ｈｃ≒
ｈｄとなる場合であり血液循環が悪い状態にあることを
示す波形で、特に注意が必要であると考えられる波形、
Ｅはｈｂ＜ｈｃかつｈｂ＞ｈｄとなる場合であり血液循
環が悪い状態にあることを示す波形で、脳卒中，心筋梗
塞，狭心症などの既往症のある者に多く見られる、特に
注意が必要であると考えられる波形、Ｆはｈｂ≒ｈｃか
つｈｂ＞ｈｄ、Ｇはｈｂ＞ｈｃかつｈｂ＞ｈｄとなる場
合でありどちらも血液循環が極端に悪い状態にあること
を示す波形で、衰弱してねたきりになった高齢者などに
みられる波形である。このように加速度脈波の波形を解
析することにより容易に循環系の動作状態の診断を行う
事ができるようになっている。FIG. 8 shows an example of a pulse waveform and an acceleration pulse waveform which is a second derivative thereof together with an electrocardiogram taken simultaneously.
FIG. 9 shows the characteristics of the five peaks a to e of this waveform.
Are classified into seven types of A to G as shown in FIG. The positions of the five peaks a, b, c, d, and e are defined as ha, hb, hc, hd, and h, respectively.
When expressed by e, A is a case where hc> 0 and hb <hd, and is a waveform that shows that blood circulation is good, which is usually seen in a young person, and B is a case where hc <0 and hb <hd. It is seen in the process where blood circulation deteriorates with aging,
Waveform in good condition, C is hb <hc and hb ≒ h
d, which is a waveform seen when it is considered that the burden on the left heart has increased due to a slight deterioration in blood circulation, and is often observed in the sports heart, where D is hb {hc}
hd, which is a waveform indicating that the blood circulation is in a bad state, a waveform that is considered to require special attention,
E is hb <hc and hb> hd, which is a waveform indicating that the blood circulation is in a poor state, and is often seen in persons with a history of stroke, myocardial infarction, angina, etc., requiring special attention. Where F is hb ≒ hc and hb> hd, and G is hb> hc and hb> hd, both of which are waveforms indicating that blood circulation is extremely poor, This is a waveform that is seen in the aged, etc. By analyzing the waveform of the acceleration pulse wave in this way, it is possible to easily diagnose the operating state of the circulatory system.
【０００７】また、たとえば特開平５−２５３１９４に
記載されているように血圧計と加速度脈波検出装置を１
つの装置に組み込むことは行われていたが、これらは２
つの測定を別個に行ない単にそれらの結果が１つの表示
器に表示されるものにすぎなかった。For example, as described in Japanese Patent Application Laid-Open No. 5-253194, a sphygmomanometer and an acceleration pulse wave
Have been implemented in two devices, but these are two
Two separate measurements were made and the results were merely displayed on one display.
【０００８】[0008]
【発明が解決しようとする課題】しかし、従来の血圧計
ではその時点での血圧は測定できるが、それが一過性の
ものか慢性的なものかわからず、継続的に計測して慢性
的なものとわかってもそれによって循環機能に影響が及
んでいるかどうかは知ることはできない。一方、脈波や
加速度脈波による診断ではその時点での循環系の動作状
態は分かっても、それだけでは今の状態を改善させるこ
とが可能かなど今後の変化の可能性まではつかめず、こ
れ単独で循環機能に関し的確な診断や循環機能の維持ま
たは改善をアドバイスするためのデータとしては不十分
であった。However, although the conventional blood pressure monitor can measure the blood pressure at that point in time, it is not known whether the blood pressure is transient or chronic. However, it is not possible to know whether it affects the circulatory function. On the other hand, in the diagnosis based on pulse waves and acceleration pulse waves, even if the operating state of the circulatory system at that time is known, it is not possible to understand the possibility of future changes such as whether it is possible to improve the current state by itself. The data alone were insufficient to provide an accurate diagnosis of circulatory function and advice on maintaining or improving circulatory function.
【０００９】[0009]
【課題を解決するための手段】上記課題を達成するため
に本発明の循環機能診断装置は、人体の血圧を測定する
血圧測定手段と、前記人体の血液の脈動により生ずる脈
波を採取する脈波採取手段と、前記脈波採取手段により
採取された脈波波形を二次微分して加速度脈波を算出す
る加速度脈波算出手段と、前記加速度脈波算出手段の出
力を複数の波形パターンに分類する波形パターン分類手
段と、前記血圧測定手段の出力と前記波形パターン分類
手段の出力とを用いて各領域が循環系の動作状態の診断
結果が同等になるように複雑に区分けされた複数の領域
のうちのいずれにあるかを決定する循環機能分類手段
と、前記循環機能分類手段の分類結果に基づき循環機能
の診断結果を決定する診断決定手段からなる。To achieve the above object, a circulatory function diagnostic apparatus according to the present invention comprises a blood pressure measuring means for measuring a blood pressure of a human body, and a pulse for sampling a pulse wave generated by the pulsation of the blood of the human body. Wave sampling means, acceleration pulse wave calculation means for calculating an acceleration pulse wave by secondarily differentiating the pulse wave waveform collected by the pulse wave collection means, and outputting the acceleration pulse wave calculation means to a plurality of waveform patterns. A plurality of waveform pattern classifying means for classifying, and a plurality of areas each of which is complicatedly divided so that the diagnosis result of the operating state of the circulatory system is equivalent using the output of the blood pressure measuring means and the output of the waveform pattern classifying means. It comprises a circulating function classifying means for deciding which of the regions is located, and a diagnosis deciding means for deciding a circulating function diagnosis result based on the classification result of the circulating function classifying means.
【００１０】上記発明によれば、現在の血液循環系の負
荷を示す血圧と、現在の血液循環系の動作状態を示す加
速度脈波を用いて被験者の循環機能の状態を診断するの
で、被験者の血圧に対する循環機能の動作状態を明確に
することが可能で、被験者の循環機能の診断や今後の循
環機能の維持もしくは改善に役立つアドバイスするため
のデータを供給できる。According to the present invention, the state of the circulatory function of the subject is diagnosed using the blood pressure indicating the current load on the blood circulatory system and the acceleration pulse wave indicating the current operating state of the blood circulatory system. It is possible to clarify the operation state of the circulatory function with respect to the blood pressure, and to supply data for diagnosing the circulatory function of the subject and giving advice to help maintain or improve the circulatory function in the future.
【００１１】[0011]
【発明の実施の形態】本発明の請求項１にかかる循環機
能診断装置は、人体の血圧を測定する血圧測定手段と、
前記人体の血液の脈動により生ずる脈波を採取する脈波
採取手段と、前記脈波採取手段により採取された脈波波
形を二次微分して加速度脈波を算出する加速度脈波算出
手段と、前記加速度脈波算出手段の出力を複数の波形パ
ターンに分類する波形パターン分類手段と、前記血圧測
定手段の出力と前記波形パターン分類手段の出力とを用
い前記人体が循環機能の診断結果毎に区分けされた複数
の領域のうちいずれにあるかを決定する循環機能分類手
段と、前記循環機能分類手段の分類結果に基づき循環機
能の診断結果を決定する診断決定手段からなる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A circulatory function diagnostic apparatus according to claim 1 of the present invention comprises: a blood pressure measuring means for measuring a blood pressure of a human body;
A pulse wave collecting means for collecting a pulse wave generated by the pulsation of the blood of the human body, and an acceleration pulse wave calculating means for calculating an acceleration pulse wave by secondarily differentiating the pulse wave waveform collected by the pulse wave collecting means, A waveform pattern classifying unit that classifies an output of the acceleration pulse wave calculating unit into a plurality of waveform patterns; and the human body is classified for each diagnosis result of a circulatory function using an output of the blood pressure measuring unit and an output of the waveform pattern classifying unit. A circulating function classifying unit for deciding which of the plurality of regions is located, and a diagnosis deciding unit for deciding a circulating function diagnosis result based on the classification result of the circulating function classifying unit.
【００１２】そして、現在の血液循環系の負荷を示す血
圧と、現在の血液循環系の動作状態を示す加速度脈波の
波形パターンを用いて被験者の循環機能の状態を診断す
るので、被験者の血圧に対する動作状態を明確にする事
が可能で、被験者の循環機能の診断や今後の循環機能の
維持もしくは改善に役立つアドバイスするためのデータ
を供給できる。The state of the circulatory function of the subject is diagnosed using the blood pressure indicating the current load on the blood circulatory system and the waveform pattern of the acceleration pulse wave indicating the current operating state of the blood circulatory system. It is possible to clarify the operation state of the subject, and to supply data for diagnosing the subject's circulatory function and providing advice useful for maintaining or improving the circulatory function in the future.
【００１３】また、本発明の請求項２にかかる循環機能
診断装置は、人体の血圧を測定する血圧測定手段と、前
記人体の血液の脈動により生ずる脈波を採取する脈波採
取手段と、前記脈波採取手段により採取された脈波波形
を二次微分して加速度脈波を算出する加速度脈波算出手
段と、前記加速度脈波算出手段の出力を波形の特徴に基
づいて数値化する波形パターン数値化手段と、前記血圧
測定手段の出力と前記波形パターン数値化手段の出力と
を用い前記人体が循環機能の診断結果毎に区分けされた
複数の領域のうちいずれにあるかを決定する循環機能分
類手段と、前記循環機能分類手段の分類結果に基づき循
環機能の診断結果を決定する診断決定手段からなる。The circulatory function diagnostic apparatus according to a second aspect of the present invention includes a blood pressure measuring means for measuring a blood pressure of a human body, a pulse wave collecting means for collecting a pulse wave generated by pulsation of blood of the human body, Acceleration pulse wave calculation means for secondarily differentiating the pulse wave waveform collected by the pulse wave collection means to calculate an acceleration pulse wave, and a waveform pattern for digitizing the output of the acceleration pulse wave calculation means based on the characteristics of the waveform A circulating function for determining which of the plurality of regions the human body is divided into for each circulatory function diagnosis result using the digitizing means and the output of the blood pressure measuring means and the output of the waveform pattern quantifying means Classification means, and diagnosis determination means for determining a diagnosis result of the circulation function based on the classification result of the circulation function classification means.
【００１４】そして、脈波の微妙な変化を大きく表現す
る加速度脈波を用い、得られた波形を数値化したうえで
被験者の循環機能を診断するので、簡単かつ正確でさら
に波形のわずかな変化似合わせて合理的に診断ができる
循環機能診断を実現できる。[0014] Then, the circulatory function of the subject is diagnosed using the acceleration pulse wave which expresses a subtle change of the pulse wave in a large amount and the obtained waveform is digitized. A circulatory function diagnosis that can be reasonably diagnosed can be realized.
【００１５】また、請求項３にかかる循環機能診断装置
は、循環機能分類手段は、血圧測定手段が測定した人体
の血圧値のうち拡張期血圧値を用いて前記人体の循環機
能の状態を分類する。According to a third aspect of the present invention, the circulating function classifying means classifies the state of the circulating function of the human body using the diastolic blood pressure value among the blood pressure values of the human body measured by the blood pressure measuring means. I do.
【００１６】そして、末梢血管の血管抵抗を反映する拡
張期血圧を用いて循環機能を診断するので、正確な循環
機能診断を実現できる。Since the circulatory function is diagnosed using the diastolic blood pressure reflecting the vascular resistance of the peripheral blood vessels, an accurate circulatory function diagnosis can be realized.
【００１７】また、請求項４にかかる循環機能診断装置
は、循環機能分類手段が脈波採取手段の出力による循環
機能の評価がよい側であり、かつ、血圧測定手段により
測定された血圧値が低い側にあるグループに分類した場
合に診断決定手段が人体の循環機能は良好であり余裕も
十分あるという診断を出力する。According to a fourth aspect of the present invention, there is provided the circulating function diagnostic apparatus, wherein the circulating function classifying means is a side on which the circulatory function is evaluated by the output of the pulse wave collecting means, and the blood pressure value measured by the blood pressure measuring means is When classified into the group on the lower side, the diagnosis determining means outputs a diagnosis that the circulatory function of the human body is good and that there is enough room.
【００１８】そして、２つの出力ともに健康な状態であ
るとき循環機能は良好で余裕も十分あると診断するの
で、被験者の循環機能を正しく診断できる循環機能診断
装置を提供できる。When both outputs are in a healthy state, it is diagnosed that the circulatory function is good and there is enough room, so that it is possible to provide a circulatory function diagnostic apparatus capable of correctly diagnosing the circulatory function of the subject.
【００１９】また、請求項５にかかる循環機能診断装置
は、循環機能分類手段が脈波採取手段の出力による循環
系の動作状態の評価がよい側であり、かつ、血圧測定手
段により測定された血圧値が高い側にあるグループに分
類した場合に診断決定手段が人体の循環機能は良好であ
るが余裕が少ないという診断を出力する。In a circulatory function diagnostic apparatus according to a fifth aspect of the present invention, the circulatory function classifying means is a side on which the operation state of the circulatory system is evaluated well by the output of the pulse wave collecting means, and the circulatory function is measured by the blood pressure measuring means. When the blood pressure value is classified into a group having a higher blood pressure value, the diagnosis determining means outputs a diagnosis indicating that the circulatory function of the human body is good but there is little room.
【００２０】そして、循環系の動作状態は良いが血圧が
高い場合は今後動作状態が悪化する可能性があるため、
それを的確に診断できる循環機能診断装置を提供でき
る。If the operating state of the circulatory system is good but the blood pressure is high, the operating state may deteriorate in the future.
It is possible to provide a circulatory function diagnostic device capable of accurately diagnosing this.
【００２１】また、請求項６にかかる循環機能診断装置
は、循環機能分類手段が脈波採取手段の出力による循環
系の動作状態の評価が悪い側にあり、かつ、血圧測定手
段により測定された血圧値が高い側にあるグループに分
類した場合に診断決定手段が人体の循環機能は悪くなっ
ているが改善は可能であるという診断を出力する。Further, in the circulatory function diagnostic apparatus according to claim 6, the circulatory function classifying means is on the side where the evaluation of the operation state of the circulatory system by the output of the pulse wave collecting means is bad, and the circulating function is measured by the blood pressure measuring means. When the blood pressure is classified into a group having a higher blood pressure value, the diagnosis determining means outputs a diagnosis that the circulatory function of the human body is deteriorated but improvement is possible.
【００２２】そして、循環系の動作状態が悪く血圧も高
い場合は動作状態が悪化してしまったがまだ改善の余地
がある場合なので、それを的確に診断できる循環機能診
断装置を提供できる。When the operating state of the circulatory system is poor and the blood pressure is high, the operating state has deteriorated, but there is still room for improvement. Therefore, it is possible to provide a circulatory function diagnostic apparatus capable of accurately diagnosing the deterioration.
【００２３】また、請求項７にかかる循環機能診断装置
は、循環機能分類手段が脈波採取手段の出力による循環
系の動作状態の評価が悪い側にあり、かつ、血圧測定手
段により測定された血圧値が低い側にあるグループに分
類した場合に診断決定手段が人体の循環機能は悪くなっ
ており改善も難しい状態であるという診断を出力する。In the circulatory function diagnostic apparatus according to the present invention, the circulatory function classifying means is on the side where the evaluation of the operating state of the circulatory system by the output of the pulse wave collecting means is poor, and the circulating function is measured by the blood pressure measuring means. When the blood pressure is classified into a group having a lower blood pressure value, the diagnosis determining means outputs a diagnosis that the circulatory function of the human body is deteriorated and improvement is difficult.
【００２４】そして、循環系の動作状態は悪いが血圧は
低い場合は動作状態が悪化したままの状態に適応して血
圧が低下してしまった状態であり、今後も改善は難しい
場合なので、的確な診断ができる循環機能診断装置を提
供できる。When the circulatory system is in a bad operating state but the blood pressure is low, it is a state in which the blood pressure has been lowered by adapting to the state in which the operating state has deteriorated, and it is difficult to improve in the future. It is possible to provide a circulatory function diagnostic device capable of performing various diagnoses.
【００２５】また、請求項８にかかる循環機能診断装置
は、血圧測定手段はカフを用いて人体の一部分を加圧し
て測定する非観血式血圧計であり、脈波採取手段は前記
血圧測定手段が拡張期血圧と決定したカフ圧と同程度か
または前記カフ圧より低いカフ圧の時点における前記カ
フ式血圧計のカフ圧を検出する圧力検出手段の出力波形
から心臓の拍動に伴う脈動を抽出して脈波を得る。Further, in the circulatory function diagnostic apparatus according to claim 8, the blood pressure measuring means is a non-invasive blood pressure monitor for measuring a part of a human body by pressurizing the part using a cuff, and the pulse wave collecting means is provided for measuring the blood pressure. Pulsation accompanying a heartbeat from the output waveform of the pressure detecting means for detecting the cuff pressure of the cuff-type sphygmomanometer at the time of the cuff pressure being equal to or lower than the cuff pressure determined by the means as the diastolic blood pressure. To obtain a pulse wave.
【００２６】そして、カフの脈動から圧脈波を検出して
循環機能を診断するので、従来の血圧計に近い構成で循
環機能診断装置を実現でき、さらに、拡張期血圧と同程
度もしくは拡張期血圧以下のカフ圧で得られるカフ圧に
よる波形の変化の少ない脈動成分から脈波を得るので安
定した脈波波形を採取することができる。Since the circulatory function is diagnosed by detecting the pressure pulse wave from the pulsation of the cuff, a circulatory function diagnosing apparatus can be realized with a configuration similar to a conventional sphygmomanometer. Since a pulse wave is obtained from a pulsation component having a small change in the waveform due to the cuff pressure obtained at a cuff pressure equal to or lower than the blood pressure, a stable pulse wave waveform can be collected.
【００２７】また、請求項９にかかる循環機能診断装置
は、血圧測定手段がカフの圧力の脈動を用いて血圧を決
定するオシロメトリック法を用いて血圧を算出する。In a circulatory function diagnostic apparatus according to a ninth aspect, the blood pressure measuring means calculates the blood pressure using an oscillometric method in which the blood pressure is determined using the pulsation of the pressure of the cuff.
【００２８】そして、圧力検出手段が出力するカフの圧
力信号から血圧測定と脈波採取の両方が実現できるので
簡単な構成の循環機能診断装置を提供できる。Then, since both the blood pressure measurement and the pulse wave collection can be realized from the cuff pressure signal output from the pressure detecting means, a circulating function diagnostic apparatus having a simple configuration can be provided.
【００２９】また、請求項１０にかかる循環機能診断装
置は、血圧測定手段はカフの減圧時の変化から血圧を算
出する。Further, in the circulatory function diagnostic apparatus according to the tenth aspect, the blood pressure measuring means calculates the blood pressure from a change when the cuff is depressurized.
【００３０】そして、血圧測定に引き続き脈波を採取で
きるので血圧測定とほとんど同じ動作で脈波採取が可能
で被験者に特別な動作を強要しない循環機能診断装置を
提供できる。Since a pulse wave can be collected subsequent to the blood pressure measurement, a pulse wave can be collected with almost the same operation as the blood pressure measurement, and a circulatory function diagnostic apparatus can be provided that does not require the subject to perform any special operation.
【００３１】[0031]
【実施例】以下、本発明の実施例について図面を参照し
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００３２】（実施例１）図１は本発明の実施例１の循
環機能診断装置の外観図、図２は同装置のブロック図で
ある。(Embodiment 1) FIG. 1 is an external view of a circulating function diagnostic apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a block diagram of the apparatus.
【００３３】図中、１０は脈波検出部、２０は血圧測定
部、３０は循環機能診断部、４０は本体であり、これら
は脈波検出部１０の一部を除き本体４０内に収納されて
いる。In the figure, 10 is a pulse wave detecting section, 20 is a blood pressure measuring section, 30 is a circulatory function diagnostic section, and 40 is a main body. These are housed in the main body 40 except for a part of the pulse wave detecting section 10. ing.
【００３４】ここで、脈波検出部１０のうち１１は脈波
検出手段、１２は信号処理手段、１３は波形分割手段で
あり、信号検出手段１２と波形分割手段１３は本体４０
内に収納されており、脈波検出手段１１と本体４０内に
収納された信号処理手段１２はコネクタ１４により脱着
可能な信号ケーブル１５により電気的に接続されてい
る。脈波検出手段１１は、心臓の拍動による血液量の増
減を光の透過量または反射量の変化により検出する光電
容積脈波計で、発光素子１６，受光素子１７とこれらを
保持し指の先端に固定して配置する固定具１８からな
る。発光素子１６は血液中のヘモグロビンや水分が強い
選択性を持って吸収する５００〜１０００ｎｍの波長光
を含む光を放射し、受光素子１７は発光素子１６が発光
した光の成分を含む波長の光に反応してその特性を変化
させる物質から構成されており、本実施例では光量に応
じて電荷を発生させるフォトダイオードを用いている。
なお、本実施例では手の指の光電容積脈波を検出して出
力しており、発光素子１６と受光素子１７は固定具１８
により被験者の指の一定位置（本実施例では指尖部）に
固定されるとともに、外部からの光を遮断する構成とし
ている。Here, 11 of the pulse wave detecting units 10 is a pulse wave detecting means, 12 is a signal processing means, 13 is a waveform dividing means, and the signal detecting means 12 and the waveform dividing means 13 are a main body 40.
The pulse wave detecting means 11 and the signal processing means 12 housed in the main body 40 are electrically connected by a detachable signal cable 15 by a connector 14. The pulse wave detecting means 11 is a photoplethysmograph which detects an increase or decrease in blood volume due to a heartbeat by a change in the amount of transmitted light or the amount of reflected light. It consists of a fixture 18 fixedly arranged at the tip. The light-emitting element 16 emits light containing light having a wavelength of 500 to 1000 nm, which absorbs hemoglobin and water in blood with strong selectivity, and the light-receiving element 17 emits light having a wavelength containing the light component emitted by the light-emitting element 16. In this embodiment, a photodiode that generates electric charge according to the amount of light is used.
In this embodiment, the photoelectric volume pulse wave of the finger of the hand is detected and output, and the light emitting element 16 and the light receiving element 17 are fixed to the fixture 18.
As a result, it is configured to be fixed to a fixed position of the subject's finger (the fingertip in this embodiment) and to block external light.
【００３５】また、血圧測定部２０のうち２１はカフ、
２２は加圧ポンプ，２３は圧力センサ，２４は減圧弁，
２５はＡＣ成分抽出手段、２６は血圧値算出手段であ
り、これらの動作は本体４０にある制御手段４１により
制御される。この血圧測定部２０は手首にカフ２１を装
着してオシロメトリック法により被験者の血圧を測定す
る非観血自動血圧計であり、制御手段４１がカフ２１の
加圧や減圧を制御し、その間に得られた圧力センサ２３
の信号と圧力センサ２３の出力信号からＡＣ成分のみを
分離し増幅して出力するＡＣ成分抽出手段２５の出力を
用いて血圧値算出手段２６が処理して血圧値を算出して
いる。Further, 21 of the blood pressure measuring units 20 are cuffs,
22 is a pressurizing pump, 23 is a pressure sensor, 24 is a pressure reducing valve,
25 is an AC component extracting means, 26 is a blood pressure value calculating means, and these operations are controlled by a control means 41 in the main body 40. This blood pressure measurement unit 20 is a non-invasive automatic blood pressure monitor that measures a subject's blood pressure by an oscillometric method by attaching a cuff 21 to a wrist, and a control unit 41 controls pressurization and decompression of the cuff 21, and during that time, Obtained pressure sensor 23
The blood pressure value calculating means 26 uses the output of the AC component extracting means 25 which separates, amplifies, and outputs only the AC component from the output signal of the pressure sensor 23 and calculates the blood pressure value.
【００３６】また、循環機能診断部３０のうち、３１は
加速度脈波算出手段、３２は波形パターン分類手段、３
３は循環機能分類手段、３４は診断決定手段である。脈
波検出部１０から出力された脈波波形は加速度脈波算出
手段３１により２次微分されて加速度脈波波形に変換さ
れ、波形パターン分類手段３２により加速度波形のパタ
ーンに基づいて分類され、循環機能分類手段３３により
血圧測定部３０と波形パターン分類手段３２の出力によ
り被験者の循環機能を分類し、診断決定手段３４では循
環機能分類手段の分類結果に基づき被験者の循環機能の
診断結果が決定される。In the circulatory function diagnosing section 30, 31 is an acceleration pulse wave calculating means, 32 is a waveform pattern classifying means,
Reference numeral 3 denotes a circulation function classifying unit, and reference numeral 34 denotes a diagnosis determining unit. The pulse wave waveform output from the pulse wave detector 10 is secondarily differentiated by the acceleration pulse wave calculating means 31, converted into an acceleration pulse wave waveform, and classified by the waveform pattern classifying means 32 based on the pattern of the acceleration waveform. The circulatory function of the subject is classified by the output of the blood pressure measurement unit 30 and the waveform pattern classification unit 32 by the function classification unit 33, and the diagnosis result of the circulatory function of the subject is determined by the diagnosis determination unit 34 based on the classification result of the circulatory function classification unit. You.
【００３７】さらに、本体４０のうち４１は制御手段、
４２は血圧測定スタートボタン、４３は循環器診断スタ
ートボタン、４４は表示器であり、血圧測定スタートボ
タン４２を押すと制御手段４１が血圧測定を開始し、測
定終了後に表示器４４に測定結果が表示される。また、
循環器診断スタートボタン４３を押すと制御手段４１が
循環機能診断を開始し、この診断結果も表示器４４に表
示される。Further, 41 of the main bodies 40 are control means,
42 is a blood pressure measurement start button, 43 is a circulatory organ diagnosis start button, and 44 is a display. When the blood pressure measurement start button 42 is pressed, the control means 41 starts blood pressure measurement, and the measurement result is displayed on the display 44 after the measurement is completed. Is displayed. Also,
When the circulatory organ diagnosis start button 43 is pressed, the control means 41 starts circulatory function diagnosis, and the diagnosis result is also displayed on the display 44.
【００３８】本実施例の循環機能診断装置は上記構成に
より以下のように作用する。すなわち、被験者が、カフ
２１を手首に巻きつけ、脈波検出手段１１を固定具１８
により手の指に固定して本体に接続したうえで循環機能
診断スタートボタン４３を押すと、まず脈波の採取が始
まり、発光素子１６から５００〜１０００ｎｍの波長光
を含む光が放射され、この光が被験者の指にあたると血
液中のヘモグロビンや水分が強い選択性を持って吸収す
るので、指を透過したり反射した後の光量は血液量の増
減を正確に反映する。受光素子１７では、このような透
過または反射した光量の変化に応じて抵抗値が変化しこ
れを電圧信号に変換することにより発光素子１６と受光
素子１７が取り付けられた部分の心臓の拍動による血液
量の増減を電圧信号に変換して取り出すことが可能にな
っている。この信号は信号処理手段１２により必要な信
号レベルに増幅されたりノイズ成分を除去するフィルタ
リング処理を受けたのち波形分割手段１３に出力され、
波形分割手段１３では心臓の拍動の一拍毎の波形に分割
されて循環機能診断部３０へ出力される。The circulatory function diagnostic apparatus according to the present embodiment operates as follows with the above configuration. That is, the subject wraps the cuff 21 around the wrist, and attaches the pulse wave detecting means 11 to the fixture 18.
When the circulatory function diagnostic start button 43 is pressed after being fixed to the finger of the user and connected to the main body, first, collection of a pulse wave starts, and light including wavelength light of 500 to 1000 nm is emitted from the light emitting element 16. When light hits the subject's finger, hemoglobin and water in the blood absorb with high selectivity, so the amount of light after passing or reflecting through the finger accurately reflects the increase or decrease in blood volume. In the light receiving element 17, the resistance value changes in accordance with such a change in the amount of transmitted or reflected light, and the resistance value is converted into a voltage signal. It is possible to convert the change in blood volume into a voltage signal and extract it. This signal is amplified by a signal processing unit 12 to a required signal level or subjected to a filtering process for removing a noise component, and then output to a waveform dividing unit 13.
The waveform dividing means 13 divides the pulse into a waveform for each beat of the heart beat and outputs the waveform to the circulatory function diagnostic unit 30.
【００３９】脈波採取部１０による脈波の採取が完了す
ると、次に血圧測定部２０により血圧が測定される。ま
ず、加圧ポンプ２２が動作してカフ２１を加圧し、圧力
センサ２３によりカフ２１内の圧力が目標圧力値を越え
た事が検出されると、加圧ポンプ２２の動作を終了さ
せ、排気弁２４を用いた減圧過程に移行する。カフの減
圧速度は排気弁２４により２〜５ｍｍＨｇ／秒に調整さ
れ、徐々に減圧していくと、次第に大きくなる血液の脈
動による振動がカフ２１に伝わり、さらにカフ２１内の
圧力の変動となって圧力センサ２３の出力信号に現れ
る。この圧力の変動成分のみがＡＣ成分抽出手段２５に
より分離、増幅されて血圧値算出手段２６に出力され、
血圧値算出手段２６では、減圧を始めてから増幅手段の
出力の振り幅が所定値を越えた時の圧力センサ２３の出
力値を被験者の収縮期血圧とし、さらに減圧して振り幅
が増加から減少に転じた時点の圧力センサ２３の出力値
を被験者の平均血圧としている。被験者の拡張期血圧は
すでに求められた収縮期血圧と平均血圧とから、統計的
に求められた式により算術的に求められる。これらの数
値は制御手段４１に出力され、制御手段４１はこの数値
を表示器４４に表示させて、被験者が確認できるように
している。When the pulse wave collection unit 10 completes the collection of the pulse wave, the blood pressure measurement unit 20 measures the blood pressure. First, the pressurizing pump 22 operates to pressurize the cuff 21, and when the pressure sensor 23 detects that the pressure in the cuff 21 exceeds the target pressure value, the operation of the pressurizing pump 22 is terminated, and The process shifts to a pressure reducing process using the valve 24. The decompression speed of the cuff is adjusted to 2 to 5 mmHg / sec by the exhaust valve 24, and when the pressure is gradually reduced, the vibration caused by the pulsation of the blood which is gradually increased is transmitted to the cuff 21, and the pressure in the cuff 21 fluctuates. Appears in the output signal of the pressure sensor 23. Only this pressure fluctuation component is separated and amplified by the AC component extraction means 25 and output to the blood pressure value calculation means 26,
In the blood pressure value calculating means 26, the output value of the pressure sensor 23 when the amplitude of the output of the amplifying means exceeds a predetermined value after the pressure reduction is started is set as the systolic blood pressure of the subject, and the pressure amplitude is further reduced and the amplitude is decreased from the increase. The output value of the pressure sensor 23 at the time of turning to is set as the average blood pressure of the subject. The diastolic blood pressure of the subject is arithmetically obtained from the already obtained systolic blood pressure and the average blood pressure by a statistically obtained equation. These numerical values are output to the control means 41, and the control means 41 displays the numerical values on the display 44 so that the subject can confirm them.
【００４０】さらに、循環機能診断部３０が、脈波採取
部１０により採取された脈波波形と血圧測定部２０によ
り測定された血圧値とから被験者の循環機能を診断す
る。ここでは、脈波採取部１０から出力された脈波は加
速度脈波算出手段３１により２次微分されて加速度脈波
に変換され、さらに波形パターン分類手段３２によりこ
の波形上に現れる５つのピークのパターンを用いて循環
系の動作状態の分類が行われる。図３に脈波波形とそれ
を処理した加速度脈波の波形の一例を別手段で採取した
心電図と共に示す。ここでは従来例で述べた方法と同
様、波形のパターンから図９に示すようなＡからＧまで
７種類の波形に分類して出力している。Further, the circulatory function diagnosis unit 30 diagnoses the circulatory function of the subject from the pulse wave waveform collected by the pulse wave collection unit 10 and the blood pressure value measured by the blood pressure measurement unit 20. Here, the pulse wave output from the pulse wave sampling unit 10 is secondarily differentiated by the acceleration pulse wave calculating means 31 and converted into an acceleration pulse wave, and the waveform pattern classifying means 32 calculates the five peaks appearing on this waveform. The classification of the operating state of the circulatory system is performed using the pattern. FIG. 3 shows an example of a pulse waveform and an acceleration pulse waveform obtained by processing the pulse waveform together with an electrocardiogram obtained by another means. Here, similar to the method described in the conventional example, seven types of waveforms from A to G as shown in FIG.
【００４１】なお、Ａに近いほど循環系の動作状態は健
全で逆にＥ，Ｆ，Ｇでは老化が進んでいたり循環系に病
気がある場合に出現する。この波形パターン分類手段３
２による分類結果は血圧測定部２０で測定された被験者
の拡張期血圧値と共に循環機能分類手段３３に出力さ
れ、循環機能分類手段３３では波形パターン分類手段３
２の分類結果と血圧測定部２０により得られた拡張期血
圧値から図４に示すような診断パターン図を用いて被験
者の循環機能の分類を行い、被験者の循環機能を診断し
ている。この診断は、循環機能の老化，劣化といった変
化が血圧の変化と密接に関連していることから行うもの
で、若い健康な人は一般に血圧も低く加速度脈波の波形
もＡやＢの健全な波形を持つが、加齢とともに血圧が上
昇し加速度脈波の波形も徐々に悪い方向に変化してい
く。It should be noted that the closer to A, the healthier the circulatory system is, and conversely, in E, F and G, it appears when the aging is progressing or the circulatory system is ill. This waveform pattern classification means 3
2 is output to the circulatory function classifying unit 33 together with the diastolic blood pressure value of the subject measured by the blood pressure measuring unit 20.
The circulatory function of the subject is classified based on the classification result of No. 2 and the diastolic blood pressure value obtained by the blood pressure measurement unit 20 using the diagnostic pattern diagram shown in FIG. This diagnosis is made because changes such as aging and deterioration of the circulatory function are closely related to changes in blood pressure. A young healthy person generally has a low blood pressure and a waveform of an acceleration pulse wave and a healthy A and B. Although it has a waveform, the blood pressure rises with aging and the waveform of the acceleration pulse wave gradually changes in a bad direction.
【００４２】このような変化は人によって様々である
が、血管の老化や末梢抵抗の増加により従来の血流を維
持するために血圧を上昇させる必要が生じ、そのために
血圧を上昇させこれを維持してきた結果心臓の負荷が増
加し加速度脈波の波形が健全な状態から悪い方向に変化
していくことがその原因であると考えられる。また、老
化が進むと加速度脈波波形はかなり悪い状態であるのに
血圧が低い場合が見られるが、これは心臓の負荷の上昇
が限界に達してもはや高血圧を維持できず、体の方が低
血圧に伴う低血流に適応した結果と考えられ、この場
合、負荷の増加に対して対応できる余裕はほとんど無
く、加速度脈波の波形が同じでもそこから予見される循
環系の状態は血圧によってかなり異なることがわかる。Although such changes vary from person to person, it is necessary to increase blood pressure in order to maintain the conventional blood flow due to aging of blood vessels and increase in peripheral resistance. As a result, it is considered that the cause is that the load on the heart increases and the waveform of the acceleration pulse wave changes from a healthy state to a bad direction. In addition, as aging progresses, the acceleration pulse wave waveform is quite bad, but there are cases where blood pressure is low, but this is because the increase in cardiac load has reached the limit and can no longer maintain high blood pressure, the body is more This is thought to be the result of adaptation to low blood flow associated with low blood pressure.In this case, there is little room to cope with an increase in load, and even if the waveform of the acceleration pulse wave is the same, the state of the circulatory system predicted from that is the blood pressure. It can be seen that they differ considerably depending on the type.
【００４３】このように、加速度脈波の波形の変化は心
臓の負荷に対する余裕の大小に深く関係しており、これ
と血圧値とを合わせて考える事により被験者の循環系の
動作状態が血圧の上昇に対し適応してきた経過や現在の
状況、さらには今後に予想される変化まで様々な被験者
の循環系の機能を明らかにする事ができる。本実施例で
は上記のような血圧と加速度脈波の関係から図４に示す
ような各領域が循環機能の診断結果が同等になるように
複雑に区分けされた複数の領域に分割した診断パターン
図を作成し、循環機能分類手段３３が得られた拡張期血
圧と加速度脈波のパターンから被験者が診断パターン図
上のアからカまでの６つの領域の内どの領域に分類され
るかを調べ、さらに診断決定手段３４により循環機能分
類手段３３の分類結果をあらかじめ決められた領域毎の
診断結果と対応させて診断内容を決定している。As described above, the change in the waveform of the acceleration pulse wave is deeply related to the magnitude of the margin with respect to the load on the heart, and by considering this together with the blood pressure value, the operating state of the circulatory system of the subject becomes lower than the blood pressure. Various subjects' circulatory functions can be revealed, including the course of adaptation to the rise, the current situation, and even the expected changes in the future. In the present embodiment, a diagnosis pattern diagram in which each region as shown in FIG. 4 is divided into a plurality of regions which are complicatedly divided so that the diagnosis result of the circulatory function becomes equal from the relationship between the blood pressure and the acceleration pulse wave as described above. Is created, and the circulatory function classifying unit 33 examines the diastolic blood pressure and the acceleration pulse wave pattern to determine which of the six regions from a to mosquito on the diagnostic pattern diagram the subject is classified into, Further, the diagnosis content is determined by the diagnosis determining means 34 by associating the classification result of the circulation function classifying means 33 with the diagnosis result for each predetermined area.
【００４４】本実施例で区分けされた各領域はそれぞれ
以下のような状態を示す。すなわち、図中アは加速度脈
波波形が良好かつ血圧が十分に低い状態であり、循環機
能が健全かつ負荷の増大等に対しても十分余裕を持って
対応できる状態、イはアよりも波形が悪い方向に変化す
るかまたは血圧が上昇し始めた状態で、循環機能の余裕
が少なくなっているがまだ健全で余裕もある状態、ウは
血圧が高くかつ加速度脈波波形にわずかに衰えが見られ
る状態で、循環機能に衰えが見え余裕も無くなりつつあ
る状態、エは血圧が高く加速度脈波波形が変化し循環機
能に衰えが見られるが、運動等の機能回復訓練により改
善可能である状態、オは血圧は十分に低いが加速度脈波
波形が悪い状態で、これは循環機能の衰えが進行しその
状態を維持した結果その状態に体が適応しもはや改善は
困難であり負荷の増大等の変化に循環機能が十分対処で
きない状態と診断される。Each area divided in this embodiment shows the following states. That is, a in the figure is a state in which the acceleration pulse wave waveform is good and the blood pressure is sufficiently low, a state in which the circulatory function is sound and the load can be increased with a sufficient margin, and a is a waveform that is better than a. Changes in the wrong direction or blood pressure has started to rise, the circulatory function has less margin but is still healthy and has room, and c has high blood pressure and a slight decline in the acceleration pulse waveform. In the state where it can be seen, the circulatory function is decreasing and the circulatory function is decreasing and the circulatory function changes due to high blood pressure and the acceleration pulse wave waveform is changing, but it can be improved by function recovery training such as exercise The condition is that the blood pressure is sufficiently low but the acceleration pulse wave waveform is bad.This is a condition in which the circulatory function declines, and as a result of maintaining the condition, the body adapts to the condition and it is no longer possible to improve and the load increases. Circulation function It is diagnosed in a state that can not be minute deal.
【００４５】なお、図中力は加速度脈波波形は良いが血
圧が低すぎる状態で、循環系の動作状態に老化などの影
響は見られないがそのままでは健全とは考えられないた
め独立した領域に分割して診断している。これらの領域
は図を見ると明らかなように同じ領域にある時に同じ診
断結果と対応するようにするために血圧と波形パターン
により複雑に入り組んだ形状をしている。例えば、図中
イで示された領域では、加速度脈波の波形パターンでは
Ａ，Ｂ，Ｃの３つの分類結果上に現れるが、Ｂの時は拡
張期血圧が５０〜８５ｍｍＨｇの広い範囲を取るのに対
して、Ｃでは６０〜８０ｍｍＨｇとＢより狭くなってい
る。これは循環機能の悪化が人により血圧値の上昇から
顕著に表れる場合と波形パターンの悪化から表出する場
合とがあることを反映し、どちらも循環機能の評価から
考えれば同等であると考えられるためである。In the figure, the force is in a state where the acceleration pulse wave waveform is good but the blood pressure is too low, and the operating state of the circulatory system is not affected by aging or the like. Diagnosis is divided into. As apparent from the drawing, these regions have a complicated and complicated shape due to the blood pressure and the waveform pattern so as to correspond to the same diagnosis result when they are in the same region. For example, in the region indicated by A in the figure, the waveform pattern of the acceleration pulse wave appears on the three classification results of A, B, and C. In the case of B, the diastolic blood pressure takes a wide range of 50 to 85 mmHg. On the other hand, in C, it is 60 to 80 mmHg, which is narrower than that in B. This reflects that there are cases where the deterioration of circulatory function is noticeable by a person due to an increase in blood pressure value and cases where the deterioration is caused by deterioration of the waveform pattern, and both are considered to be equivalent from the viewpoint of evaluation of circulatory function. That is because
【００４６】この循環機能診断部３０により診断された
診断結果は制御手段４１に出力され、制御手段４１はこ
の診断結果を表示器４４に表示させて、診断内容を被験
者もしくは測定者が確認できるようになっている。The diagnostic result diagnosed by the circulating function diagnostic section 30 is output to the control means 41, and the control means 41 displays the diagnostic result on the display 44 so that the contents of the diagnosis can be confirmed by the subject or the measurer. It has become.
【００４７】また、血圧測定スタートボタン４２を押し
た場合は上記の内脈波採取と循環機能診断は実施され
ず、血圧測定の結果のみが表示器４４に表示される。When the blood pressure measurement start button 42 is pressed, the above-described internal pulse wave collection and circulatory function diagnosis are not performed, and only the result of the blood pressure measurement is displayed on the display 44.
【００４８】上記のように本実施例の循環機能診断装置
は、現在の血液循環系の負荷を示す血圧と、現在の血液
循環系の動作状態を示す加速度脈波を用いて被験者の循
環機能の状態を診断するので、被験者の血圧に対する動
作状態を明確にする事が可能で、被験者の循環機能の診
断や今後の循環機能の維持もしくは改善に役立つアドバ
イスするためのデータを供給できる。As described above, the circulatory function diagnostic apparatus according to the present embodiment uses the blood pressure indicating the current blood circulatory system load and the acceleration pulse wave indicating the current operating state of the blood circulatory system to determine the circulatory function of the subject. Since the condition is diagnosed, it is possible to clarify the operation state of the subject with respect to the blood pressure, and to supply data for diagnosing the subject's circulatory function and providing advice useful for maintaining or improving the circulatory function in the future.
【００４９】なお、上記実施例では循環機能診断部３０
において加速度脈波の波形パターンを用いて分類しこの
分類結果と拡張期血圧とから被験者の循環機能を分類し
て診断したが、加速度脈波のパターンではなく脈波から
指標を算出しこの数値と血圧値とにより被験者の循環機
能を分類をする事も可能である。例えば、指標として心
力増加時間と呼ばれる以下のようにして求められる値を
用いることで被験者の循環系の動作状態をある程度知る
事ができる。図３の脈波波形に記号Ｔで示された区間が
それで、波形分割手段１３から出力された一拍毎に分割
された脈波波形から心臓の弁が開き心臓から動脈へ血液
が押し出された時に生ずる血管内の圧力が最低となる時
点の極値を起点とし、血液が心臓から血管内に押し出さ
れて血管中の血液が急激に増加するが次第に増加速度が
減少して終には減少に転じこの時点に生ずる血管内の圧
力が最大となる時点の極値までの時間を算出して指標に
用いる値とする。これは心臓が血液を動脈に押し出すの
にどれだけ負荷がかかっているかを示し、長くなるほど
末梢の負荷に対して心臓の能力が追いついてない事を表
している。したがって、血管の柔軟性がなくなり末梢抵
抗が大きくなるほど、また、心臓の能力が末梢抵抗に追
いつかなくなるほど長くなり、簡単に循環系の動作状態
を知る事のできる有効な指標である。In the above embodiment, the circulating function diagnosis unit 30
In the classification using the waveform pattern of the acceleration pulse wave, the circulatory function of the subject was classified and diagnosed based on the classification result and the diastolic blood pressure. It is also possible to classify the circulatory function of the subject based on the blood pressure value. For example, by using a value called a cardiac strength increasing time, which is obtained as follows, as an index, the operation state of the circulatory system of the subject can be known to some extent. The section indicated by the symbol T in the pulse wave waveform of FIG. 3 is the pulse wave waveform divided for each beat outputted from the waveform dividing means 13, the valve of the heart is opened, and blood is extruded from the heart to the artery. Starting from the extremum at which the pressure inside the blood vessel becomes minimum, blood is pushed out of the heart into the blood vessel, and the blood in the blood vessel rapidly increases, but the rate of increase gradually decreases, and finally decreases. In other words, the time until the extreme value at the time when the pressure in the blood vessel generated at this time becomes the maximum is calculated and set as a value used as an index. This indicates how much load the heart has to push blood into the arteries, indicating that the longer the heart is, the more the ability of the heart to keep up with peripheral loads. Therefore, the longer the blood vessel becomes less flexible and the greater the peripheral resistance, the longer the ability of the heart cannot catch up with the peripheral resistance, the longer it is, and it is an effective index that allows the operating state of the circulatory system to be easily known.
【００５０】また、上記実施例では循環機能診断部３０
において加速度脈波の波形パターンを用いて分類しこの
分類結果と拡張期血圧とから被験者の循環機能を分類し
て診断したが、加速度脈波のパターンではなく加速度脈
波の５つの波形の基準線からの高さを用いて数値化し、
この数値と血圧値とにより被験者の循環機能を分類をす
る事も可能である。図３の加速度脈波の波形で説明する
と、ａは心臓の弁が開き血液の動脈への拍出が開始され
たときに発生する正方向のピークで、これは一般に基準
として用いられ、ピークの高さが１になるように正規化
される。ｂはａの正のピークに続いて発生する負方向の
ピークで、心臓に近い部分の大動脈の柔軟性が高いと負
の方向に大きなピークとなる。続いて発生する正のピー
クｃは心臓から大動脈に押し出された大量の血液が末梢
に流れて生じるピークで末梢の血液の流れがスムーズで
あるほどｂのピークから正方向に高くなる。さらに続く
負のピークｄは末梢の流れ方と心臓の拍出力の差で生
じ、流れ方が早く、この時点の心臓の拍出力が弱くなっ
ているほど上方でピークが生ずる。このように、ｂ，
ｃ，ｄのピークの高さは被験者の循環系の動作状態の特
徴を示す指標となっており、これらを組み合わせて波形
の特徴パターンで分類したり、波形の各ピークの基線か
らの距離を用いて数値化して、循環系の動作状態の把握
や診断に用いることができる。例えばａ，ｂ，ｃ，ｄの
ピークの位置ｈａ，ｈｂ，ｈｃ，ｈｄを以下の式（１）
に代入して数値化する方法がある。In the above embodiment, the circulating function diagnosis unit 30
In the above, classification was performed using the waveform pattern of the acceleration pulse wave, and the circulatory function of the subject was classified and diagnosed based on the classification result and the diastolic blood pressure. Numerical value using the height from
It is also possible to classify the circulatory function of the subject based on the numerical value and the blood pressure value. Referring to the waveform of the acceleration pulse wave in FIG. 3, a is a positive peak generated when the heart valve opens and the blood starts to be pumped into the artery, which is generally used as a reference, and is used as a reference. The height is normalized to be one. b is a negative peak generated following the positive peak of a, and becomes large in the negative direction when the flexibility of the aorta near the heart is high. The subsequent positive peak c is a peak generated when a large amount of blood extruded from the heart into the aorta flows to the periphery. The smoother the peripheral blood flow, the higher the positive peak c from the peak b in the positive direction. A further negative peak d is caused by the difference between the peripheral flow and the heart beat output. The flow is faster, and the peak is generated as the heart beat output at this time becomes weaker. Thus, b,
The peak heights of c and d serve as indices indicating the characteristics of the circulatory system of the subject, and are combined to classify them by waveform feature patterns, or to use the distance of each peak from the baseline to the waveform. It can be used to grasp and diagnose the operating state of the circulatory system. For example, the peak positions ha, hb, hc, hd of a, b, c, d are calculated by the following equation (1).
There is a method of substituting into a numerical value.
【００５１】 Ｐ＝１００×（−ｈｂ＋ｈｃ＋ｈｄ）／ｈａ （１） ここでＰは算出される指標であり、ほとんどの場合−１
００〜１００の値を取り、値が大きいほど循環系の動作
状態が健全な状態にあることを示す。図５にここで求め
た指標と血圧値とから被験者の循環機能を分類した例を
示す。図４とは異なり、脈波による分類が連続した数値
として表現されるので、領域間の凹凸が少なく、簡単か
つ正確でさらに波形のわずかな変化で診断が大きく変化
しないためより合理的な診断を行う事ができる。なお、
図５では横軸の加速度脈波波形の数値化結果は、図４の
診断パターン図と合わせるため左側になるほど数値が大
きくなるように配置してある。P = 100 × (−hb + hc + hd) / ha (1) Here, P is an index to be calculated, and in most cases, −1
It takes a value from 00 to 100, and a larger value indicates a healthier operating state of the circulatory system. FIG. 5 shows an example in which the circulatory function of the subject is classified based on the index and the blood pressure value obtained here. Unlike FIG. 4, the classification based on the pulse wave is expressed as a continuous numerical value, so that there is little irregularity between the regions, and the diagnosis is simple and accurate. Can do it. In addition,
In FIG. 5, the digitized result of the acceleration pulse wave waveform on the horizontal axis is arranged so that the numerical value becomes larger toward the left side in order to match the diagnostic pattern diagram of FIG.
【００５２】なお、本実施例では血圧測定法としてオシ
ロメトリック法を用いているが、コロトコフ音法など非
観血的に血圧測定ができる方法であるならばいかなる方
法でも良い。In this embodiment, the oscillometric method is used as the blood pressure measuring method. However, any method such as the Korotkoff sound method can be used as long as it can measure blood pressure noninvasively.
【００５３】また、本実施例では被験者の循環機能を分
類する際に拡張期血圧を用いているが、収縮期血圧や平
均血圧、収縮期血圧と拡張期血圧の圧力差を用いてもよ
いし、これらの異なる数値を組み合わせて分類に用いて
も良い。ただし、単独で分類に用いる場合は拡張期血圧
は末梢血管の血管抵抗を反映するので循環機能の診断に
は最適である。In this embodiment, the diastolic blood pressure is used to classify the circulatory function of the subject. However, the systolic blood pressure, the average blood pressure, and the pressure difference between the systolic blood pressure and the diastolic blood pressure may be used. These different numerical values may be used in combination for classification. However, when used alone for classification, diastolic blood pressure reflects the vascular resistance of peripheral blood vessels and is therefore optimal for diagnosing circulatory function.
【００５４】また、本実施例では血圧測定法として手首
にカフを巻きつけて行っているが、手首ではなく上腕や
指などで行う方法でも良い。In the present embodiment, the blood pressure is measured by wrapping the cuff around the wrist, but the blood pressure may be measured by the upper arm or finger instead of the wrist.
【００５５】さらに、本実施例の脈波採取手段は指尖の
光電脈波を用いているが、光電により脈波信号が得られ
る場所であれば指基部など他の場所でも良い。Further, although the pulse wave collecting means of this embodiment uses a fingertip photoelectric pulse wave, any other place such as a finger base may be used as long as a pulse wave signal can be obtained by photoelectric.
【００５６】（実施例２）図６は本発明の実施例２の循
環機能診断装置の外観図、図７は同装置の構成図であ
る。(Embodiment 2) FIG. 6 is an external view of a circulating function diagnostic apparatus according to Embodiment 2 of the present invention, and FIG. 7 is a configuration diagram of the apparatus.
【００５７】本実施例が本発明の第１の実施例と異なる
点は、脈波採取部１０が血圧測定部２０の圧力センサ２
３の出力信号から脈波信号選択手段１９により診断に用
いる脈波信号を選択した上で脈動部分を抽出して、ここ
で得られた脈波信号から被験者の循環機能を診断するも
ので、これにより脈波採取部１０はすべて本体４０内に
収納され、外観上は通常のオシロメトリック式自動血圧
計とほとんど変わらない点と、脈波採取部１０が脈波を
採取するのは血圧採取部２０が収縮期血圧を検出し、カ
フ圧が収縮期血圧付近にある時点から収縮期血圧より１
０ｍｍＨｇ低下するまでの間である点にある。This embodiment is different from the first embodiment of the present invention in that the pulse wave collecting section 10 is connected to the pressure sensor 2 of the blood pressure measuring section 20.
The pulse wave signal selection means 19 selects a pulse wave signal to be used for diagnosis from the output signal of No. 3 and then extracts a pulsating part, and diagnoses the circulatory function of the subject from the obtained pulse wave signal. Thus, the pulse wave sampling unit 10 is entirely housed in the main body 40, and the appearance is almost the same as a normal oscillometric type automatic sphygmomanometer, and the pulse wave sampling unit 10 collects a pulse wave only in the blood pressure sampling unit 20. Detects the systolic blood pressure, and from the time when the cuff pressure is near the systolic blood pressure,
It is in the period until it decreases by 0 mmHg.
【００５８】本実施例の脈波採取部１０は、血圧値算出
手段２６が決定した拡張期血圧値と圧力センサ２３の出
力とに基づきＡＣ成分抽出手段２５の出力から必要な脈
波信号を選択する脈波信号選択手段１９と、ＤＣ成分を
カットするフィルタとフィルタの出力を増幅する増幅手
段からなる信号処理手段１２を持ち、この信号処理手段
の出力を心拍の１周期に相当する時間毎の波形に変換す
る波形分割手段１３を経て循環機能診断部３０に出力し
ている。また、この構成では脈波を採取できるのはカフ
２１内に圧力が加えられカフ２１が手首を圧迫している
場合のみであるが、このカフ２１内の圧力により得られ
る脈波形状はカフ２１の圧力により変化するためこの影
響を排除する必要がある。この脈波波形の変化はカフ圧
が収縮期血圧から拡張期血圧までの間にある時は顕著に
表れるが、平均血圧値以下になるとその変化も少なくな
り、拡張期血圧値付近になると振幅の減少は見られるが
波形自体の変化はほとんどなくなって、それ以下のカフ
圧では安定した脈波が得られるようになる。ただし、カ
フ圧が３０ｍｍＨｇ以下の非常に低い圧力になると得ら
れる脈動成分も小さくなるので、本実施例では拡張期血
圧を用い、カフ圧が拡張期血圧になった時点から拡張期
血圧より１０ｍｍＨｇだけ減圧した値になるまでの間に
採取された脈波を用いて循環機能の診断に用いている。
したがって、本実施例における循環機能診断の場合、ま
ず先に血圧測定を行い、この時に得られた拡張期血圧の
値を用い、カフ圧が拡張期血圧から１０ｍｍＨｇだけ低
下した圧力の間にある時に採取された脈波信号を脈波信
号選択手段１９が選択して信号処理手段１２に出力し、
循環機能の判定に用いている。ここに述べた脈波採取以
外の作用は実施例１と同様であるので省略する。The pulse wave sampling section 10 of the present embodiment selects a necessary pulse wave signal from the output of the AC component extracting means 25 based on the diastolic blood pressure value determined by the blood pressure value calculating means 26 and the output of the pressure sensor 23. Pulse signal selecting means 19, and a signal processing means 12 comprising a filter for cutting a DC component and an amplifying means for amplifying the output of the filter. The output of this signal processing means is output at each time corresponding to one cycle of the heartbeat. The signal is output to the circulating function diagnosis unit 30 via the waveform dividing means 13 for converting the waveform into a waveform. Further, in this configuration, a pulse wave can be collected only when pressure is applied to the cuff 21 and the cuff 21 presses the wrist, but the pulse wave shape obtained by the pressure in the cuff 21 is It is necessary to eliminate this effect because the pressure varies with the pressure. This change in the pulse waveform is remarkable when the cuff pressure is between the systolic blood pressure and the diastolic blood pressure.However, when the cuff pressure falls below the average blood pressure value, the change decreases. Although a decrease is observed, the waveform itself hardly changes, and a stable pulse wave can be obtained at a cuff pressure lower than that. However, since the pulsation component obtained when the cuff pressure becomes a very low pressure of 30 mmHg or less becomes small, the present embodiment uses diastolic blood pressure, and only 10 mmHg from the diastolic blood pressure from the time when the cuff pressure becomes diastolic blood pressure. It is used for diagnosing the circulatory function using the pulse wave collected until the pressure is reduced.
Therefore, in the case of the circulatory function diagnosis in the present embodiment, the blood pressure is measured first, and the value of the diastolic blood pressure obtained at this time is used, and when the cuff pressure is between the diastolic blood pressure and the pressure reduced by 10 mmHg. The pulse wave signal selecting means 19 selects the collected pulse wave signal and outputs it to the signal processing means 12,
Used to determine circulatory function. The operation other than the pulse wave collection described here is the same as that of the first embodiment, and thus the description is omitted.
【００５９】上記実施例の循環機能診断装置によれば、
脈波採取部１０が血圧測定部２０の圧力センサ２３の出
力の心臓の拍動により生ずる圧力変化を用いて脈波を採
取するので、脈波採取のために特別な採取手段が不要で
簡単な構成の循環機能診断装置を実現できる。また、脈
波採取部１０による脈波採取は血圧測定部２０が血圧を
測定する際にカフ圧が拡張期血圧以下になった時の脈波
を採取する事により行うので、安定した脈波採取が行え
る上、血圧採取に引き続いて循環機能を診断する事が可
能で、被験者に対し脈波採取のための特別な動作を強要
せず、わずかに測定時間が長くなるほかは血圧測定時と
殆ど同じ操作，状態で循環機能診断ができる。According to the circulating function diagnostic apparatus of the above embodiment,
Since the pulse wave collecting unit 10 collects a pulse wave using the pressure change generated by the heartbeat of the output of the pressure sensor 23 of the blood pressure measuring unit 20, a special collecting means is not required for collecting the pulse wave, which is simple. A circulating function diagnostic device having a configuration can be realized. Since the pulse wave collection by the pulse wave collection unit 10 is performed by collecting the pulse wave when the cuff pressure becomes equal to or less than the diastolic blood pressure when the blood pressure measurement unit 20 measures the blood pressure, stable pulse wave collection is performed. In addition to performing blood pressure collection, it is possible to diagnose the circulatory function following blood pressure collection. Circulatory function diagnosis can be performed with the same operation and state.
【００６０】なお、本実施例では血圧測定はオシロメト
リック法を用いているが、コロトコフ音法などカフ２１
を用いて非観血的に血圧を測定する方法であれば他の方
法でも良い。ただし、オシロメトリック法以外ではコロ
トコフ音法におけるマイクロホンなど血圧測定に用いる
センサとして別の手段が必要になるため、簡便に本実施
例に示した循環機能診断装置を実現するためにはオシロ
メトリック法が最も良い。さらに、オシロメトリック法
では拡張期血圧の算出は基本的に収縮期血圧と平均血圧
から統計的に推定して決定しているので、平均血圧が判
明した時点で拡張期血圧がほぼ判明し、脈波信号選択手
段１９がどの時点から脈波を採取すれば良いかを前もっ
て知る事ができる。したがって、コロトコフ音法などカ
フ圧が拡張期血圧以下になるまで拡張期血圧値を決定で
きない血圧測定法では拡張期血圧付近の波形を記憶して
おく必要がありそのための記憶手段等が必須であるのに
対し、オシロメトリック法ではこのような記憶手段を用
いる必要が無い。In this embodiment, the blood pressure is measured by the oscillometric method. However, the cuff 21 such as the Korotkoff sound method is used.
Any other method may be used as long as it is a method of non-invasively measuring the blood pressure using the method. However, other than the oscillometric method, another means is necessary as a sensor for measuring blood pressure, such as a microphone in the Korotkoff sound method, so that the oscillometric method is simply used to realize the circulatory function diagnostic apparatus shown in this embodiment. The best. Furthermore, in the oscillometric method, the calculation of the diastolic blood pressure is basically determined by statistically estimating from the systolic blood pressure and the mean blood pressure. It is possible to know in advance from which point the pulse signal selecting means 19 should start sampling the pulse wave. Therefore, in a blood pressure measurement method such as the Korotkoff sound method, in which the diastolic blood pressure value cannot be determined until the cuff pressure becomes equal to or lower than the diastolic blood pressure, it is necessary to store a waveform near the diastolic blood pressure, and a storage means and the like for that purpose are essential. On the other hand, the oscillometric method does not require such storage means.
【００６１】また、本実施例では血圧採取はカフ圧を一
度収縮期血圧以上にした後徐々に減圧してその時に発生
する脈波の変化を用いて被験者の収縮期血圧と平均血
圧、拡張期血圧を決定しているが、このような加圧方法
を用いずに、はじめから徐々に加圧し収縮期血圧を検出
した後に加圧を止め急速排気して終了するという方法で
も可能である。ただし、この場合、拡張期血圧が算出さ
れるまでどの圧力帯の脈波を循環機能診断に用いるデー
タとするか決定できないので、多くの脈波波形を記憶し
ておく必要があり、構成的には本実施例で用いた方法よ
り複雑になる。従って、血圧測定時の加圧方式に関して
も簡便に本実施例に示した循環機能診断装置を実現する
ためには一度収縮期血圧以上にした後徐々に減圧してそ
の時に発生する脈波の変化を用いて被験者の収縮期血圧
と平均血圧、拡張期血圧を決定する方法が最も良い。In the present embodiment, the blood pressure is collected by setting the cuff pressure once to the systolic blood pressure and then gradually reducing the pressure, and using the change in the pulse wave generated at that time, the systolic blood pressure of the subject, the average blood pressure, and the diastolic blood pressure. Although the blood pressure is determined, a method of gradually increasing the pressure from the beginning, detecting the systolic blood pressure, stopping the pressurization, rapidly exhausting, and ending without using such a pressurization method is also possible. However, in this case, since it is not possible to determine which pressure band to use as data for circulating function diagnosis until the diastolic blood pressure is calculated, it is necessary to store many pulse wave waveforms, and Is more complicated than the method used in this embodiment. Therefore, in order to easily realize the circulatory function diagnostic apparatus shown in the present embodiment also with respect to the pressurization method at the time of blood pressure measurement, it is necessary to once increase the systolic blood pressure or more and then gradually reduce the pressure to change the pulse wave generated at that time. The best method is to determine the systolic blood pressure, mean blood pressure and diastolic blood pressure of the subject using
【００６２】[0062]
【発明の効果】以上説明したように本発明の請求項１に
かかる循環機能診断装置は、現在の血液循環系の負荷を
示す血圧と、現在の血液循環系の動作状態を示す加速度
脈波の波形パターンを用いて被験者の循環機能の状態を
診断するので、被験者の血圧に対する動作状態を明確に
する事が可能で、被験者の循環機能の診断や今後の循環
機能の維持もしくは改善に役立つアドバイスするための
データを供給できる。As described above, the circulatory function diagnostic apparatus according to the first aspect of the present invention provides a blood pressure indicating the current load on the blood circulation system and an acceleration pulse wave indicating the current operation state of the blood circulation system. Diagnosis of the subject's circulatory function using the waveform pattern makes it possible to clarify the subject's circulatory function with respect to blood pressure, and provides advice to help diagnose the subject's circulatory function and maintain or improve the circulatory function in the future Data can be supplied.
【００６３】また、請求項２にかかる循環機能診断装置
は、脈波の微妙な変化を大きく表現する加速度脈波を用
い、得られた波形を数値化したうえで被験者の循環機能
を診断するので、簡単かつ正確でさらに波形のわずかな
変化に合わせて領域を細かく設定でき合理的な診断がで
きる循環機能診断を実現できる。In addition, the circulatory function diagnostic apparatus according to the second aspect diagnoses the circulatory function of the subject after digitizing the obtained waveform using an acceleration pulse wave that largely expresses a subtle change in the pulse wave. In addition, a simple and accurate circulatory function diagnosis can be realized in which the area can be finely set in accordance with a slight change in the waveform and a rational diagnosis can be made.
【００６４】また、請求項３にかかる循環機能診断装置
は、末梢血管の血管抵抗を反映する拡張期血圧を用いて
循環機能を診断するので、正確な循環機能診断を実現で
きる。Further, the circulatory function diagnostic apparatus according to the third aspect diagnoses the circulatory function using diastolic blood pressure reflecting the vascular resistance of the peripheral blood vessels, so that accurate circulatory function diagnosis can be realized.
【００６５】また、請求項４にかかる循環機能診断装置
は、循環系の動作状態と血圧の２つの出力ともに健康な
状態であるときは循環機能が良好で余裕も十分ある場合
であり、それを的確に診断できる循環機能診断装置を提
供できる。Further, the circulatory function diagnostic apparatus according to claim 4 is a case where the circulatory function is good and the margin is sufficient when both the operating state of the circulatory system and the two outputs of the blood pressure are healthy. It is possible to provide a circulatory function diagnostic device capable of performing accurate diagnosis.
【００６６】また、請求項５にかかる循環機能診断装置
は、循環系の動作状態は良いが血圧が高い場合は今後循
環機能が悪化する可能性があるため、それを的確に診断
できる循環機能診断装置を提供できる。In the circulatory function diagnostic apparatus according to the present invention, the circulatory function can be accurately diagnosed because the circulatory function may be deteriorated in the future when the circulatory system is operating well but the blood pressure is high. Equipment can be provided.
【００６７】また、請求項６にかかる循環機能診断装置
は、循環系の動作状態が悪く血圧も高い場合は動作状態
が悪化してしまったがまだ改善の余地がある場合であ
り、それを的確に診断できる循環機能診断装置を提供で
きる。In the circulatory function diagnostic apparatus according to the sixth aspect, when the operating state of the circulatory system is poor and the blood pressure is high, the operating state is deteriorated, but there is still room for improvement. It is possible to provide a circulatory function diagnostic device capable of performing diagnostics.
【００６８】また、請求項７にかかる循環機能診断装置
は、循環系の動作状態は悪いが血圧は低い場合は動作状
態が悪化したままの状態に適応して血圧が低下してしま
った状態であり、今後も改善も難しい場合であり、これ
を的確に診断できる循環機能診断装置を提供できる。In the circulatory function diagnostic apparatus according to claim 7, when the circulatory system is in a bad operating state but the blood pressure is low, the circulating function diagnostic apparatus adapts to the state in which the operating state remains deteriorated and the blood pressure drops. There is a case where improvement is difficult in the future, and it is possible to provide a circulatory function diagnostic apparatus capable of accurately diagnosing this.
【００６９】また、請求項８にかかる循環機能診断装置
は、カフの脈動から圧脈波を検出して循環機能を診断す
るので、従来の血圧計に近い構成で循環機能診断装置を
実現でき、さらに、拡張期血圧と同程度もしくは拡張期
血圧以下のカフ圧で得られるカフ圧による波形の変化の
少ない脈動成分から脈波を得るので安定した脈波波形採
取することができる。The circulatory function diagnostic apparatus according to the eighth aspect detects the pressure pulse wave from the cuff pulsation and diagnoses the circulatory function. Therefore, the circulatory function diagnostic apparatus can be realized with a configuration similar to a conventional sphygmomanometer. Furthermore, since a pulse wave is obtained from a pulsation component having a small change in waveform due to a cuff pressure obtained at a cuff pressure equal to or lower than the diastolic blood pressure, a stable pulse wave waveform can be obtained.
【００７０】また、請求項９にかかる循環機能診断装置
は、カフの圧力の脈動から血圧測定と脈波採取の両方が
実現できるので簡単な構成の循環機能診断装置を提供で
きる。Further, the circulatory function diagnostic apparatus according to the ninth aspect can provide a circulatory function diagnostic apparatus having a simple configuration because both the blood pressure measurement and the pulse wave collection can be realized from the pulsation of the cuff pressure.
【００７１】また、請求項１０にかかる循環機能診断装
置は、血圧測定に引き続き脈波を採取できるので血圧測
定とほとんど同じ動作で脈波採取が可能で被験者に特別
な動作を強要しない循環機能診断装置を提供できる。In the circulatory function diagnostic apparatus according to the tenth aspect, since a pulse wave can be collected subsequent to the blood pressure measurement, the pulse wave can be collected by almost the same operation as the blood pressure measurement, and the circulatory function diagnosis that does not require the test subject to perform a special operation is performed. Equipment can be provided.
【図１】本発明の実施例１の循環機能診断装置の外観図FIG. 1 is an external view of a circulatory function diagnostic device according to a first embodiment of the present invention.
【図２】同装置のブロック図FIG. 2 is a block diagram of the apparatus.
【図３】同装置で循環機能診断に用いる脈波、加速度脈
波の波形を心電図と共に記載した波形図FIG. 3 is a waveform diagram showing pulse waveforms and acceleration pulse waves used for circulatory function diagnosis in the same device together with an electrocardiogram.
【図４】同装置で循環機能診断に用いる診断パターン図FIG. 4 is a diagnosis pattern diagram used for circulating function diagnosis by the same device.
【図５】同装置の別の例で循環機能診断に用いる診断パ
ターン図FIG. 5 is a diagnostic pattern diagram used for circulating function diagnosis in another example of the same device.
【図６】本発明の実施例２の循環機能診断装置の外観図FIG. 6 is an external view of a circulatory function diagnostic device according to a second embodiment of the present invention.
【図７】同装置のブロック図FIG. 7 is a block diagram of the apparatus.
【図８】従来の循環機能診断装置で循環機能診断に用い
る脈波、加速度脈波の波形を心電図と共に記載した波形
図FIG. 8 is a waveform diagram showing the waveforms of a pulse wave and an acceleration pulse wave used for circulating function diagnosis in a conventional circulating function diagnosing device together with an electrocardiogram.
【図９】同装置で循環機能診断に用いる加速度脈波波形
のパターン図FIG. 9 is a pattern diagram of an acceleration pulse wave waveform used for circulating function diagnosis in the same device.
１０ 脈波検出部 １１ 脈波検出手段 １２ 信号処理手段 １３ 波形分割手段 １４ コネクタ １５ 信号ケーブル １６ 発光部 １７ 受光部 １８ 固定具 １９ 脈波選択手段 ２０ 血圧素測定部 ２１ カフ ２２ 加圧ポンプ ２３ 圧力センサ ２４ 減圧弁 ２５ ＡＣ成分抽出手段 ２６ 血圧値算出手段 ３０ 循環機能診断部 ３１ 加速度脈波算出手段 ３２ 波形パターン分類手段 ３３ 循環機能分類手段 ３４ 診断決定手段 ４０ 本体 ４１ 制御手段 ４２ 血圧測定スタートボタン ４３ 循環機能診断スタートボタン ４４ 表示器 REFERENCE SIGNS LIST 10 pulse wave detecting section 11 pulse wave detecting means 12 signal processing means 13 waveform dividing means 14 connector 15 signal cable 16 light emitting section 17 light receiving section 18 fixture 19 pulse wave selecting means 20 blood pressure element measuring section 21 cuff 22 pressurizing pump 23 pressure Sensor 24 Pressure reducing valve 25 AC component extracting means 26 Blood pressure value calculating means 30 Circulating function diagnostic unit 31 Acceleration pulse wave calculating means 32 Waveform pattern classifying means 33 Circulating function classifying means 34 Diagnosis determining means 40 Main body 41 Control means 42 Blood pressure measurement start button 43 Circulatory function diagnosis start button 44 Display
Claims (10)
記人体の血液の脈動により生ずる脈波を採取する脈波採
取手段と、前記脈波採取手段により採取された脈波波形
を二次微分して加速度脈波を算出する加速度脈波算出手
段と、前記加速度脈波算出手段の出力を複数の波形パタ
ーンに分類する波形パターン分類手段と、前記血圧測定
手段の出力と前記波形パターン分類手段の出力とを用い
前記人体が循環機能の診断結果毎に区分けされた複数の
領域のうちいずれにあるかを決定する循環機能分類手段
と、前記循環機能分類手段の分類結果に基づき循環機能
の診断結果を決定する診断決定手段からなる循環機能診
断装置。1. A blood pressure measuring means for measuring a blood pressure of a human body, a pulse wave collecting means for collecting a pulse wave generated by a pulsation of the blood of the human body, and a pulse wave waveform collected by the pulse wave collecting means. Acceleration pulse wave calculating means for differentiating and calculating an acceleration pulse wave; a waveform pattern classifying means for classifying an output of the acceleration pulse wave calculating means into a plurality of waveform patterns; an output of the blood pressure measuring means and the waveform pattern classifying means Circulating function classifying means for determining which of the plurality of areas the human body is classified into for each circulating function diagnosis result using the output of the circulating function classifying means, and diagnosing the circulating function based on the classification result of the circulating function classifying means A circulatory function diagnostic device comprising diagnostic determination means for determining a result.
記人体の血液の脈動により生ずる脈波を採取する脈波採
取手段と、前記脈波採取手段により採取された脈波波形
を二次微分して加速度脈波を算出する加速度脈波算出手
段と、前記加速度脈波算出手段の出力を波形の特徴に基
づいて数値化する波形パターン数値化手段と、前記血圧
測定手段の出力と前記波形パターン数値化手段の出力と
を用い前記人体が循環機能の診断結果毎に区分けされた
複数の領域のうちいずれにあるかを決定する循環機能分
類手段と、前記循環機能分類手段の分類結果に基づき循
環機能の診断結果を決定する診断決定手段からなる循環
機能診断装置。2. A blood pressure measuring means for measuring a blood pressure of a human body, a pulse wave collecting means for collecting a pulse wave generated by a pulsation of blood of the human body, and a pulse wave waveform collected by the pulse wave collecting means. Acceleration pulse wave calculating means for calculating an acceleration pulse wave by differentiating; a waveform pattern quantifying means for quantifying an output of the acceleration pulse wave calculating means based on characteristics of a waveform; an output of the blood pressure measuring means and the waveform A circulating function classifying unit that determines which of the plurality of regions the human body is divided into for each circulating function diagnosis result using an output of the pattern quantifying unit, and a classification result of the circulating function classifying unit. A circulatory function diagnostic device comprising a diagnostic determining means for determining a diagnostic result of a circulatory function.
した人体の血圧値のうち拡張期血圧値を用いて前記人体
の循環機能の状態を分類する請求項１または２に記載の
循環機能診断装置。3. The circulatory function according to claim 1, wherein the circulatory function classifying means classifies the state of the circulatory function of the human body using a diastolic blood pressure value among the blood pressure values of the human body measured by the blood pressure measuring means. Diagnostic device.
採取手段の出力による循環系の動作状態の評価がよい側
にあり、かつ、血圧測定手段の測定した血圧値が低い側
にあるグループに分類した場合に人体の循環機能は良好
であり余裕も十分あるという診断を出力する請求項１な
いし３のいずれか１項に記載の循環機能診断装置。4. The diagnosis determining means, wherein the circulatory function classifying means is on the side where the evaluation of the operating state of the circulatory system based on the output of the pulse wave sampling means is good and the blood pressure value measured by the blood pressure measuring means is on the low side. The circulatory function diagnostic apparatus according to claim 1, wherein the circulatory function diagnostic apparatus outputs a diagnosis that the circulatory function of the human body is good and has a sufficient margin when classified into groups.
採取手段の出力による循環系の動作状態の評価がよい側
であり、かつ、血圧測定手段の測定した血圧値が高い側
にあるグループに分類した場合に人体の循環機能は良好
であるが余裕が少ないという診断を出力する請求項１な
いし３のいずれか１項に記載の循環機能診断装置。5. The diagnosis determining means, wherein the circulating function classifying means is on the side where the evaluation of the operating state of the circulatory system by the output of the pulse wave sampling means is good and the blood pressure value measured by the blood pressure measuring means is on the high side. 4. The circulatory function diagnostic apparatus according to claim 1, wherein when the circulatory function is classified into groups, a diagnosis that the circulatory function of the human body is good but the margin is small is output.
採取手段の出力による循環系の動作状態の評価が悪い側
にあり、かつ、血圧測定手段の測定した血圧値が高い側
にあるグループに分類した場合に人体の循環機能は悪く
なっているが改善は可能であるという診断を出力する請
求項１ないし３のいずれか１項に記載の循環機能診断装
置。6. The diagnosis deciding means is such that the circulatory function classifying means is on the side where the evaluation of the circulatory system operation state based on the output of the pulse wave sampling means is bad and the blood pressure value measured by the blood pressure measuring means is on the high side. 4. The circulatory function diagnosis apparatus according to claim 1, wherein when the circulatory function is classified into groups, a diagnosis is output that the circulatory function of the human body is deteriorated but improvement is possible.
採取手段の出力による循環系の動作状態の評価が悪い側
にあり、かつ、血圧測定手段の測定した血圧値が低い側
にあるグループに分類した場合に人体の循環機能は悪く
なっており改善も難しい状態であるという診断を出力す
る請求項１ないし３のいずれか１項に記載の循環機能診
断装置。7. The diagnosis determining means, wherein the circulatory function classifying means is on the side where the evaluation of the operating state of the circulatory system based on the output of the pulse wave sampling means is bad and the blood pressure value measured by the blood pressure measuring means is on the low side. The circulatory function diagnostic device according to claim 1, wherein when categorized into groups, the circulatory function diagnostic device outputs a diagnosis that the circulatory function of the human body is deteriorated and is difficult to improve.
を加圧して測定する非観血式血圧計であり、脈波採取手
段は前記血圧測定手段が拡張期血圧と決定したカフ圧と
同程度かまたは前記カフ圧より低いカフ圧の時点におけ
る前記カフ式血圧計のカフ圧を検出する圧力検出手段の
出力波形から心臓の拍動に伴う脈動を抽出して脈波を得
る請求項１ないし３のいずれか１項に記載の循環機能診
断装置。8. The blood pressure measuring means is a non-invasive sphygmomanometer which measures a part of the human body by pressurizing the part using a cuff, and the pulse wave collecting means is configured to determine a cuff pressure determined by the blood pressure measuring means to be a diastolic blood pressure. 2. A pulse wave obtained by extracting a pulsation accompanying a heart beat from an output waveform of a pressure detecting means for detecting a cuff pressure of the cuff type sphygmomanometer at a time when the cuff pressure is equal to or lower than the cuff pressure. The circulatory function diagnostic device according to any one of claims 3 to 3.
血圧を決定するオシロメトリック法を用いて血圧を算出
する請求項７に記載の循環機能診断装置。9. The circulatory function diagnostic apparatus according to claim 7, wherein the blood pressure measuring means calculates the blood pressure using an oscillometric method for determining the blood pressure using the pulsation of the cuff pressure.
血圧を算出する請求項７または８に記載の循環機能診断
装置。10. The circulatory function diagnostic apparatus according to claim 7, wherein the blood pressure measuring means calculates the blood pressure from a change when the cuff is depressurized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11025829A JP2000217796A (en) | 1999-02-03 | 1999-02-03 | Circulatory function diagnostic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11025829A JP2000217796A (en) | 1999-02-03 | 1999-02-03 | Circulatory function diagnostic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000217796A true JP2000217796A (en) | 2000-08-08 |
Family
ID=12176758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11025829A Withdrawn JP2000217796A (en) | 1999-02-03 | 1999-02-03 | Circulatory function diagnostic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000217796A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005066087A (en) * | 2003-08-26 | 2005-03-17 | Matsushita Electric Works Ltd | Circulatory organ function determining device |
| US6905470B2 (en) | 2002-04-15 | 2005-06-14 | Samsung Electronics Co., Ltd. | Apparatus and method for detecting heartbeat using PPG |
| US7326180B2 (en) | 2002-12-05 | 2008-02-05 | Omron Healthcare Co., Ltd. | Pulse wave monitoring device |
| EP2568876A1 (en) * | 2010-05-14 | 2013-03-20 | Centre For Development Of Advanced Computing | Diagnostic classifications of pulse signal waveform data |
| WO2013057866A1 (en) * | 2011-10-19 | 2013-04-25 | パナソニック 株式会社 | Circulatory dynamics measurement apparatus |
| US11622692B2 (en) | 2020-01-30 | 2023-04-11 | Samsung Electronics Co., Ltd. | Signal processing apparatus, and apparatus and method for estimating bio-information |
| US11864874B2 (en) | 2015-06-18 | 2024-01-09 | CSEM Centre Suisse d'Electronique et de Microtechnique SA—Recherche et Développement | Method, apparatus and computer program for determining a blood pressure value |
-
1999
- 1999-02-03 JP JP11025829A patent/JP2000217796A/en not_active Withdrawn
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6905470B2 (en) | 2002-04-15 | 2005-06-14 | Samsung Electronics Co., Ltd. | Apparatus and method for detecting heartbeat using PPG |
| US7326180B2 (en) | 2002-12-05 | 2008-02-05 | Omron Healthcare Co., Ltd. | Pulse wave monitoring device |
| JP2005066087A (en) * | 2003-08-26 | 2005-03-17 | Matsushita Electric Works Ltd | Circulatory organ function determining device |
| JP4590844B2 (en) * | 2003-08-26 | 2010-12-01 | パナソニック電工株式会社 | Cardiovascular function judgment device |
| US9220437B2 (en) | 2010-05-14 | 2015-12-29 | Centre For Development Of Advanced Computing | Diagnostic classifications of pulse signal waveform data |
| EP2568876A4 (en) * | 2010-05-14 | 2014-09-03 | Ct For Dev Of Advanced Computing | Diagnostic classifications of pulse signal waveform data |
| EP2568876A1 (en) * | 2010-05-14 | 2013-03-20 | Centre For Development Of Advanced Computing | Diagnostic classifications of pulse signal waveform data |
| WO2013057866A1 (en) * | 2011-10-19 | 2013-04-25 | パナソニック 株式会社 | Circulatory dynamics measurement apparatus |
| CN103764018A (en) * | 2011-10-19 | 2014-04-30 | 松下电器产业株式会社 | Circulatory dynamics measurement apparatus |
| TWI495453B (en) * | 2011-10-19 | 2015-08-11 | Panasonic Corp | Circulation dynamics measuring apparatus |
| US10010252B2 (en) | 2011-10-19 | 2018-07-03 | Panasonic Intellectual Property Management Co., Ltd. | Circulatory dynamics measurement apparatus |
| US11864874B2 (en) | 2015-06-18 | 2024-01-09 | CSEM Centre Suisse d'Electronique et de Microtechnique SA—Recherche et Développement | Method, apparatus and computer program for determining a blood pressure value |
| US11622692B2 (en) | 2020-01-30 | 2023-04-11 | Samsung Electronics Co., Ltd. | Signal processing apparatus, and apparatus and method for estimating bio-information |
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